/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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:18:57,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:18:57,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:18:57,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:18:57,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:18:57,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:18:57,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:18:57,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:18:57,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:18:57,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:18:57,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:18:57,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:18:57,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:18:57,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:18:57,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:18:57,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:18:57,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:18:57,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:18:57,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:18:57,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:18:57,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:18:57,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:18:57,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:18:57,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:18:57,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:18:57,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:18:57,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:18:57,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:18:57,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:18:57,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:18:57,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:18:57,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:18:57,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:18:57,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:18:57,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:18:57,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:18:57,405 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:18:57,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:18:57,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:18:57,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:18:57,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:18:57,473 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:18:57,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:18:57,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:18:57,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:18:57,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:18:57,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:18:57,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:18:57,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:18:57,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:18:57,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:18:57,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:18:57,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:18:57,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:18:57,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:18:57,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:18:57,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:18:57,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:18:57,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:18:57,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:18:57,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:18:57,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:18:57,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:18:57,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:18:57,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:18:57,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:18:57,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:18:57,953 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:18:57,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:18:58,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4913f437f/e0a9ab601a9a428eb52c1b6d317c6c02/FLAGc6575e998 [2020-12-22 08:18:59,058 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:18:59,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:18:59,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4913f437f/e0a9ab601a9a428eb52c1b6d317c6c02/FLAGc6575e998 [2020-12-22 08:18:59,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4913f437f/e0a9ab601a9a428eb52c1b6d317c6c02 [2020-12-22 08:18:59,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:18:59,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:18:59,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:18:59,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:18:59,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:18:59,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:18:59" (1/1) ... [2020-12-22 08:18:59,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de7e78b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:18:59, skipping insertion in model container [2020-12-22 08:18:59,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:18:59" (1/1) ... [2020-12-22 08:18:59,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:18:59,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:19:00,005 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[6768,6781] [2020-12-22 08:19:00,040 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10510,10523] [2020-12-22 08:19:00,082 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[17540,17553] [2020-12-22 08:19:00,115 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23613,23626] [2020-12-22 08:19:00,229 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42241,42254] [2020-12-22 08:19:00,314 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[64222,64235] [2020-12-22 08:19:00,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:19:00,641 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:19:00,708 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[6768,6781] [2020-12-22 08:19:00,744 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10510,10523] [2020-12-22 08:19:00,805 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[17540,17553] [2020-12-22 08:19:00,866 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23613,23626] [2020-12-22 08:19:00,958 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42241,42254] [2020-12-22 08:19:01,018 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_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[64222,64235] [2020-12-22 08:19:01,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:19:01,180 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:19:01,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01 WrapperNode [2020-12-22 08:19:01,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:19:01,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:19:01,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:19:01,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:19:01,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (1/1) ... [2020-12-22 08:19:01,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (1/1) ... [2020-12-22 08:19:01,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:19:01,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:19:01,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:19:01,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:19:01,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (1/1) ... [2020-12-22 08:19:01,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (1/1) ... [2020-12-22 08:19:01,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (1/1) ... [2020-12-22 08:19:01,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (1/1) ... [2020-12-22 08:19:01,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (1/1) ... [2020-12-22 08:19:01,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (1/1) ... [2020-12-22 08:19:01,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (1/1) ... [2020-12-22 08:19:01,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:19:01,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:19:01,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:19:01,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:19:01,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:19:01,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:19:01,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:19:01,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:19:01,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:19:06,206 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:19:06,207 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:19:06,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:19:06 BoogieIcfgContainer [2020-12-22 08:19:06,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:19:06,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:19:06,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:19:06,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:19:06,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:18:59" (1/3) ... [2020-12-22 08:19:06,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44898998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:19:06, skipping insertion in model container [2020-12-22 08:19:06,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:01" (2/3) ... [2020-12-22 08:19:06,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44898998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:19:06, skipping insertion in model container [2020-12-22 08:19:06,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:19:06" (3/3) ... [2020-12-22 08:19:06,221 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:19:06,229 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:19:06,236 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 08:19:06,257 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 08:19:06,294 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:19:06,295 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:19:06,295 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:19:06,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:19:06,295 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:19:06,295 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:19:06,295 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:19:06,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:19:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states. [2020-12-22 08:19:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:19:06,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:06,363 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] [2020-12-22 08:19:06,363 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:06,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1703299446, now seen corresponding path program 1 times [2020-12-22 08:19:06,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:06,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888165506] [2020-12-22 08:19:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:06,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888165506] [2020-12-22 08:19:06,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:06,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:19:06,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982461403] [2020-12-22 08:19:06,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:19:06,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:07,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:19:07,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:19:07,022 INFO L87 Difference]: Start difference. First operand 1121 states. Second operand 6 states. [2020-12-22 08:19:08,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:08,905 INFO L93 Difference]: Finished difference Result 2219 states and 3901 transitions. [2020-12-22 08:19:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:19:08,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 08:19:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:08,942 INFO L225 Difference]: With dead ends: 2219 [2020-12-22 08:19:08,942 INFO L226 Difference]: Without dead ends: 1497 [2020-12-22 08:19:08,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:19:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2020-12-22 08:19:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1477. [2020-12-22 08:19:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1477 states. [2020-12-22 08:19:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1975 transitions. [2020-12-22 08:19:09,109 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1975 transitions. Word has length 51 [2020-12-22 08:19:09,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:09,110 INFO L481 AbstractCegarLoop]: Abstraction has 1477 states and 1975 transitions. [2020-12-22 08:19:09,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:19:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1975 transitions. [2020-12-22 08:19:09,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:19:09,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:09,115 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] [2020-12-22 08:19:09,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:19:09,115 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:09,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:09,117 INFO L82 PathProgramCache]: Analyzing trace with hash 199718681, now seen corresponding path program 1 times [2020-12-22 08:19:09,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:09,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267155606] [2020-12-22 08:19:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:09,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267155606] [2020-12-22 08:19:09,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:09,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:19:09,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688101074] [2020-12-22 08:19:09,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:19:09,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:09,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:19:09,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:19:09,344 INFO L87 Difference]: Start difference. First operand 1477 states and 1975 transitions. Second operand 6 states. [2020-12-22 08:19:10,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:10,839 INFO L93 Difference]: Finished difference Result 3233 states and 4464 transitions. [2020-12-22 08:19:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:19:10,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 08:19:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:10,853 INFO L225 Difference]: With dead ends: 3233 [2020-12-22 08:19:10,854 INFO L226 Difference]: Without dead ends: 2333 [2020-12-22 08:19:10,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:19:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2020-12-22 08:19:10,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2317. [2020-12-22 08:19:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-12-22 08:19:10,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3202 transitions. [2020-12-22 08:19:10,970 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3202 transitions. Word has length 51 [2020-12-22 08:19:10,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:10,970 INFO L481 AbstractCegarLoop]: Abstraction has 2317 states and 3202 transitions. [2020-12-22 08:19:10,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:19:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3202 transitions. [2020-12-22 08:19:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:19:10,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:10,975 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] [2020-12-22 08:19:10,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:19:10,976 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1084504014, now seen corresponding path program 1 times [2020-12-22 08:19:10,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:10,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936684263] [2020-12-22 08:19:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:11,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936684263] [2020-12-22 08:19:11,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:11,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:19:11,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321164829] [2020-12-22 08:19:11,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:19:11,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:11,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:19:11,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:19:11,119 INFO L87 Difference]: Start difference. First operand 2317 states and 3202 transitions. Second operand 5 states. [2020-12-22 08:19:12,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:12,375 INFO L93 Difference]: Finished difference Result 4807 states and 6726 transitions. [2020-12-22 08:19:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:19:12,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 08:19:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:12,396 INFO L225 Difference]: With dead ends: 4807 [2020-12-22 08:19:12,396 INFO L226 Difference]: Without dead ends: 3579 [2020-12-22 08:19:12,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:19:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2020-12-22 08:19:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3573. [2020-12-22 08:19:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2020-12-22 08:19:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4924 transitions. [2020-12-22 08:19:12,625 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4924 transitions. Word has length 51 [2020-12-22 08:19:12,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:12,626 INFO L481 AbstractCegarLoop]: Abstraction has 3573 states and 4924 transitions. [2020-12-22 08:19:12,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:19:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4924 transitions. [2020-12-22 08:19:12,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:19:12,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:12,631 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] [2020-12-22 08:19:12,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:19:12,631 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:12,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:12,632 INFO L82 PathProgramCache]: Analyzing trace with hash -614217846, now seen corresponding path program 1 times [2020-12-22 08:19:12,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:12,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425548274] [2020-12-22 08:19:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:12,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425548274] [2020-12-22 08:19:12,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:12,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:19:12,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940903399] [2020-12-22 08:19:12,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:19:12,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:12,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:19:12,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:19:12,828 INFO L87 Difference]: Start difference. First operand 3573 states and 4924 transitions. Second operand 9 states. [2020-12-22 08:19:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:16,218 INFO L93 Difference]: Finished difference Result 7796 states and 11351 transitions. [2020-12-22 08:19:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:19:16,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-12-22 08:19:16,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:16,260 INFO L225 Difference]: With dead ends: 7796 [2020-12-22 08:19:16,260 INFO L226 Difference]: Without dead ends: 7791 [2020-12-22 08:19:16,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:19:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7791 states. [2020-12-22 08:19:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7791 to 3573. [2020-12-22 08:19:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2020-12-22 08:19:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4923 transitions. [2020-12-22 08:19:16,532 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4923 transitions. Word has length 52 [2020-12-22 08:19:16,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:16,533 INFO L481 AbstractCegarLoop]: Abstraction has 3573 states and 4923 transitions. [2020-12-22 08:19:16,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:19:16,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4923 transitions. [2020-12-22 08:19:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:19:16,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:16,538 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] [2020-12-22 08:19:16,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:19:16,539 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:16,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:16,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1085905725, now seen corresponding path program 1 times [2020-12-22 08:19:16,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:16,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831483616] [2020-12-22 08:19:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:16,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831483616] [2020-12-22 08:19:16,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:16,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:19:16,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185121074] [2020-12-22 08:19:16,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:19:16,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:16,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:19:16,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:19:16,757 INFO L87 Difference]: Start difference. First operand 3573 states and 4923 transitions. Second operand 9 states. [2020-12-22 08:19:19,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:19,906 INFO L93 Difference]: Finished difference Result 9665 states and 14056 transitions. [2020-12-22 08:19:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:19:19,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-12-22 08:19:19,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:19,949 INFO L225 Difference]: With dead ends: 9665 [2020-12-22 08:19:19,949 INFO L226 Difference]: Without dead ends: 8652 [2020-12-22 08:19:19,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:19:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8652 states. [2020-12-22 08:19:20,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8652 to 3573. [2020-12-22 08:19:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2020-12-22 08:19:20,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4922 transitions. [2020-12-22 08:19:20,258 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4922 transitions. Word has length 52 [2020-12-22 08:19:20,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:20,259 INFO L481 AbstractCegarLoop]: Abstraction has 3573 states and 4922 transitions. [2020-12-22 08:19:20,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:19:20,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4922 transitions. [2020-12-22 08:19:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:19:20,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:20,263 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] [2020-12-22 08:19:20,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:19:20,264 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:20,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:20,265 INFO L82 PathProgramCache]: Analyzing trace with hash -592999742, now seen corresponding path program 1 times [2020-12-22 08:19:20,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:20,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241147032] [2020-12-22 08:19:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:20,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241147032] [2020-12-22 08:19:20,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:20,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:19:20,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824972025] [2020-12-22 08:19:20,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:19:20,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:20,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:19:20,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:19:20,454 INFO L87 Difference]: Start difference. First operand 3573 states and 4922 transitions. Second operand 8 states. [2020-12-22 08:19:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:23,259 INFO L93 Difference]: Finished difference Result 8363 states and 12319 transitions. [2020-12-22 08:19:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:19:23,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-12-22 08:19:23,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:23,289 INFO L225 Difference]: With dead ends: 8363 [2020-12-22 08:19:23,289 INFO L226 Difference]: Without dead ends: 7097 [2020-12-22 08:19:23,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:19:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7097 states. [2020-12-22 08:19:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7097 to 3573. [2020-12-22 08:19:23,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2020-12-22 08:19:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4921 transitions. [2020-12-22 08:19:23,679 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4921 transitions. Word has length 52 [2020-12-22 08:19:23,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:23,684 INFO L481 AbstractCegarLoop]: Abstraction has 3573 states and 4921 transitions. [2020-12-22 08:19:23,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:19:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4921 transitions. [2020-12-22 08:19:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:19:23,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:23,697 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] [2020-12-22 08:19:23,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:19:23,697 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:23,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:23,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2034797542, now seen corresponding path program 1 times [2020-12-22 08:19:23,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:23,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686897896] [2020-12-22 08:19:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:23,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686897896] [2020-12-22 08:19:23,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:23,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:23,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525835847] [2020-12-22 08:19:23,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:23,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:23,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:23,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:23,778 INFO L87 Difference]: Start difference. First operand 3573 states and 4921 transitions. Second operand 3 states. [2020-12-22 08:19:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:24,249 INFO L93 Difference]: Finished difference Result 5620 states and 8028 transitions. [2020-12-22 08:19:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:24,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 08:19:24,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:24,259 INFO L225 Difference]: With dead ends: 5620 [2020-12-22 08:19:24,259 INFO L226 Difference]: Without dead ends: 3512 [2020-12-22 08:19:24,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2020-12-22 08:19:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3510. [2020-12-22 08:19:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3510 states. [2020-12-22 08:19:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 4859 transitions. [2020-12-22 08:19:24,620 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 4859 transitions. Word has length 53 [2020-12-22 08:19:24,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:24,621 INFO L481 AbstractCegarLoop]: Abstraction has 3510 states and 4859 transitions. [2020-12-22 08:19:24,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 4859 transitions. [2020-12-22 08:19:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:19:24,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:24,624 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] [2020-12-22 08:19:24,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:19:24,625 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:24,625 INFO L82 PathProgramCache]: Analyzing trace with hash -512099954, now seen corresponding path program 1 times [2020-12-22 08:19:24,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:24,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773673281] [2020-12-22 08:19:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:24,693 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 08:19:24,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773673281] [2020-12-22 08:19:24,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:24,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:24,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071552649] [2020-12-22 08:19:24,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:24,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:24,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:24,701 INFO L87 Difference]: Start difference. First operand 3510 states and 4859 transitions. Second operand 3 states. [2020-12-22 08:19:25,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:25,248 INFO L93 Difference]: Finished difference Result 6763 states and 9891 transitions. [2020-12-22 08:19:25,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:25,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 08:19:25,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:25,257 INFO L225 Difference]: With dead ends: 6763 [2020-12-22 08:19:25,258 INFO L226 Difference]: Without dead ends: 4783 [2020-12-22 08:19:25,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2020-12-22 08:19:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4221. [2020-12-22 08:19:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4221 states. [2020-12-22 08:19:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 5962 transitions. [2020-12-22 08:19:25,639 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 5962 transitions. Word has length 53 [2020-12-22 08:19:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:25,640 INFO L481 AbstractCegarLoop]: Abstraction has 4221 states and 5962 transitions. [2020-12-22 08:19:25,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 5962 transitions. [2020-12-22 08:19:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:19:25,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:25,643 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] [2020-12-22 08:19:25,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:19:25,644 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:25,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:25,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1062086298, now seen corresponding path program 1 times [2020-12-22 08:19:25,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:25,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164922824] [2020-12-22 08:19:25,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:25,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164922824] [2020-12-22 08:19:25,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:25,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:25,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608491979] [2020-12-22 08:19:25,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:25,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:25,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:25,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:25,704 INFO L87 Difference]: Start difference. First operand 4221 states and 5962 transitions. Second operand 3 states. [2020-12-22 08:19:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:26,312 INFO L93 Difference]: Finished difference Result 9139 states and 13447 transitions. [2020-12-22 08:19:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:26,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 08:19:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:26,327 INFO L225 Difference]: With dead ends: 9139 [2020-12-22 08:19:26,328 INFO L226 Difference]: Without dead ends: 6208 [2020-12-22 08:19:26,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:26,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2020-12-22 08:19:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 5364. [2020-12-22 08:19:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5364 states. [2020-12-22 08:19:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 7641 transitions. [2020-12-22 08:19:26,964 INFO L78 Accepts]: Start accepts. Automaton has 5364 states and 7641 transitions. Word has length 53 [2020-12-22 08:19:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:26,964 INFO L481 AbstractCegarLoop]: Abstraction has 5364 states and 7641 transitions. [2020-12-22 08:19:26,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5364 states and 7641 transitions. [2020-12-22 08:19:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:19:26,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:26,968 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] [2020-12-22 08:19:26,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:19:26,968 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:26,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1383066013, now seen corresponding path program 1 times [2020-12-22 08:19:26,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:26,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959932380] [2020-12-22 08:19:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:27,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959932380] [2020-12-22 08:19:27,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:27,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:27,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884250865] [2020-12-22 08:19:27,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:27,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:27,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:27,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:27,019 INFO L87 Difference]: Start difference. First operand 5364 states and 7641 transitions. Second operand 3 states. [2020-12-22 08:19:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:28,167 INFO L93 Difference]: Finished difference Result 12673 states and 18593 transitions. [2020-12-22 08:19:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:28,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:19:28,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:28,185 INFO L225 Difference]: With dead ends: 12673 [2020-12-22 08:19:28,186 INFO L226 Difference]: Without dead ends: 8085 [2020-12-22 08:19:28,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8085 states. [2020-12-22 08:19:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8085 to 6375. [2020-12-22 08:19:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6375 states. [2020-12-22 08:19:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6375 states to 6375 states and 9278 transitions. [2020-12-22 08:19:28,913 INFO L78 Accepts]: Start accepts. Automaton has 6375 states and 9278 transitions. Word has length 54 [2020-12-22 08:19:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:28,913 INFO L481 AbstractCegarLoop]: Abstraction has 6375 states and 9278 transitions. [2020-12-22 08:19:28,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 6375 states and 9278 transitions. [2020-12-22 08:19:28,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:19:28,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:28,916 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] [2020-12-22 08:19:28,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:19:28,916 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:28,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:28,917 INFO L82 PathProgramCache]: Analyzing trace with hash -111097732, now seen corresponding path program 1 times [2020-12-22 08:19:28,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:28,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492475793] [2020-12-22 08:19:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:28,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492475793] [2020-12-22 08:19:28,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:28,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:28,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872686884] [2020-12-22 08:19:28,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:28,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:28,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:28,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:28,966 INFO L87 Difference]: Start difference. First operand 6375 states and 9278 transitions. Second operand 3 states. [2020-12-22 08:19:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:30,198 INFO L93 Difference]: Finished difference Result 16218 states and 24045 transitions. [2020-12-22 08:19:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:30,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:19:30,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:30,224 INFO L225 Difference]: With dead ends: 16218 [2020-12-22 08:19:30,224 INFO L226 Difference]: Without dead ends: 10374 [2020-12-22 08:19:30,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10374 states. [2020-12-22 08:19:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10374 to 8058. [2020-12-22 08:19:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8058 states. [2020-12-22 08:19:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8058 states to 8058 states and 11880 transitions. [2020-12-22 08:19:31,150 INFO L78 Accepts]: Start accepts. Automaton has 8058 states and 11880 transitions. Word has length 54 [2020-12-22 08:19:31,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:31,150 INFO L481 AbstractCegarLoop]: Abstraction has 8058 states and 11880 transitions. [2020-12-22 08:19:31,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:31,150 INFO L276 IsEmpty]: Start isEmpty. Operand 8058 states and 11880 transitions. [2020-12-22 08:19:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:19:31,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:31,153 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] [2020-12-22 08:19:31,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:19:31,153 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:31,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:31,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1920628919, now seen corresponding path program 1 times [2020-12-22 08:19:31,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:31,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690400065] [2020-12-22 08:19:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:31,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690400065] [2020-12-22 08:19:31,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:31,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:19:31,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094684756] [2020-12-22 08:19:31,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:19:31,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:31,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:19:31,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:19:31,964 INFO L87 Difference]: Start difference. First operand 8058 states and 11880 transitions. Second operand 19 states. [2020-12-22 08:19:32,277 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-12-22 08:19:33,126 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:19:33,374 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-22 08:19:33,694 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:19:33,906 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:19:34,208 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:19:34,467 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-12-22 08:19:34,711 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-12-22 08:19:35,063 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:19:35,389 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-22 08:19:38,773 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:19:41,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:41,462 INFO L93 Difference]: Finished difference Result 21060 states and 31421 transitions. [2020-12-22 08:19:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:19:41,463 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-12-22 08:19:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:41,497 INFO L225 Difference]: With dead ends: 21060 [2020-12-22 08:19:41,498 INFO L226 Difference]: Without dead ends: 21054 [2020-12-22 08:19:41,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=335, Invalid=1147, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:19:41,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21054 states. [2020-12-22 08:19:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21054 to 8058. [2020-12-22 08:19:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8058 states. [2020-12-22 08:19:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8058 states to 8058 states and 11879 transitions. [2020-12-22 08:19:42,736 INFO L78 Accepts]: Start accepts. Automaton has 8058 states and 11879 transitions. Word has length 55 [2020-12-22 08:19:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:42,736 INFO L481 AbstractCegarLoop]: Abstraction has 8058 states and 11879 transitions. [2020-12-22 08:19:42,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:19:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand 8058 states and 11879 transitions. [2020-12-22 08:19:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:19:42,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:42,738 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] [2020-12-22 08:19:42,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:19:42,739 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:42,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1947167719, now seen corresponding path program 1 times [2020-12-22 08:19:42,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:42,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941605858] [2020-12-22 08:19:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:43,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941605858] [2020-12-22 08:19:43,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:43,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:19:43,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605904380] [2020-12-22 08:19:43,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:19:43,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:43,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:19:43,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:19:43,983 INFO L87 Difference]: Start difference. First operand 8058 states and 11879 transitions. Second operand 16 states. [2020-12-22 08:19:44,220 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-12-22 08:19:44,575 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-12-22 08:19:44,781 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-22 08:19:45,121 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-12-22 08:19:45,383 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-12-22 08:19:45,750 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-12-22 08:19:46,218 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-12-22 08:19:46,662 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-12-22 08:19:47,122 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-12-22 08:19:47,546 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-12-22 08:19:47,928 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-12-22 08:19:48,373 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-22 08:19:49,143 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-22 08:19:49,604 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-12-22 08:19:55,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:55,733 INFO L93 Difference]: Finished difference Result 22785 states and 33784 transitions. [2020-12-22 08:19:55,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:19:55,734 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-12-22 08:19:55,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:55,760 INFO L225 Difference]: With dead ends: 22785 [2020-12-22 08:19:55,760 INFO L226 Difference]: Without dead ends: 22587 [2020-12-22 08:19:55,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:19:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22587 states. [2020-12-22 08:19:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22587 to 8046. [2020-12-22 08:19:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8046 states. [2020-12-22 08:19:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8046 states to 8046 states and 11866 transitions. [2020-12-22 08:19:57,359 INFO L78 Accepts]: Start accepts. Automaton has 8046 states and 11866 transitions. Word has length 55 [2020-12-22 08:19:57,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:57,359 INFO L481 AbstractCegarLoop]: Abstraction has 8046 states and 11866 transitions. [2020-12-22 08:19:57,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:19:57,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8046 states and 11866 transitions. [2020-12-22 08:19:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:19:57,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:57,362 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] [2020-12-22 08:19:57,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:19:57,362 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:57,364 INFO L82 PathProgramCache]: Analyzing trace with hash -2018662677, now seen corresponding path program 1 times [2020-12-22 08:19:57,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:57,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566084231] [2020-12-22 08:19:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:58,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566084231] [2020-12-22 08:19:58,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:58,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:19:58,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316932949] [2020-12-22 08:19:58,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:19:58,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:58,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:19:58,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:19:58,089 INFO L87 Difference]: Start difference. First operand 8046 states and 11866 transitions. Second operand 19 states. [2020-12-22 08:19:58,325 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 08:19:59,144 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:20:00,028 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:20:00,805 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-12-22 08:20:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:08,609 INFO L93 Difference]: Finished difference Result 21570 states and 32154 transitions. [2020-12-22 08:20:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:20:08,610 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-12-22 08:20:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:08,642 INFO L225 Difference]: With dead ends: 21570 [2020-12-22 08:20:08,642 INFO L226 Difference]: Without dead ends: 21566 [2020-12-22 08:20:08,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:20:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21566 states. [2020-12-22 08:20:10,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21566 to 8046. [2020-12-22 08:20:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8046 states. [2020-12-22 08:20:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8046 states to 8046 states and 11865 transitions. [2020-12-22 08:20:10,410 INFO L78 Accepts]: Start accepts. Automaton has 8046 states and 11865 transitions. Word has length 55 [2020-12-22 08:20:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:10,410 INFO L481 AbstractCegarLoop]: Abstraction has 8046 states and 11865 transitions. [2020-12-22 08:20:10,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:20:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 8046 states and 11865 transitions. [2020-12-22 08:20:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:20:10,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:10,412 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] [2020-12-22 08:20:10,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:20:10,412 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:10,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:10,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1431726049, now seen corresponding path program 1 times [2020-12-22 08:20:10,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:10,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133736111] [2020-12-22 08:20:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:11,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133736111] [2020-12-22 08:20:11,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:11,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:20:11,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323140638] [2020-12-22 08:20:11,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:20:11,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:11,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:20:11,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:20:11,264 INFO L87 Difference]: Start difference. First operand 8046 states and 11865 transitions. Second operand 19 states. [2020-12-22 08:20:11,524 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-12-22 08:20:11,892 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:20:12,034 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 08:20:12,185 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:20:12,330 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-12-22 08:20:12,564 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:20:12,840 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 08:20:13,195 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:20:13,435 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:20:13,755 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-22 08:20:14,570 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:20:14,871 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-22 08:20:15,628 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 08:20:18,328 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-22 08:20:19,160 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:20:19,947 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:20:25,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:25,981 INFO L93 Difference]: Finished difference Result 27377 states and 40866 transitions. [2020-12-22 08:20:25,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:20:25,982 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-12-22 08:20:25,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:26,030 INFO L225 Difference]: With dead ends: 27377 [2020-12-22 08:20:26,030 INFO L226 Difference]: Without dead ends: 27373 [2020-12-22 08:20:26,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:20:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27373 states. [2020-12-22 08:20:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27373 to 8058. [2020-12-22 08:20:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8058 states. [2020-12-22 08:20:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8058 states to 8058 states and 11882 transitions. [2020-12-22 08:20:27,805 INFO L78 Accepts]: Start accepts. Automaton has 8058 states and 11882 transitions. Word has length 55 [2020-12-22 08:20:27,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:27,805 INFO L481 AbstractCegarLoop]: Abstraction has 8058 states and 11882 transitions. [2020-12-22 08:20:27,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:20:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8058 states and 11882 transitions. [2020-12-22 08:20:27,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:20:27,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:27,808 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] [2020-12-22 08:20:27,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:20:27,808 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:27,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:27,809 INFO L82 PathProgramCache]: Analyzing trace with hash -156193940, now seen corresponding path program 1 times [2020-12-22 08:20:27,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:27,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096881986] [2020-12-22 08:20:27,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:28,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096881986] [2020-12-22 08:20:28,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:28,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:20:28,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077848069] [2020-12-22 08:20:28,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:20:28,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:28,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:20:28,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:20:28,427 INFO L87 Difference]: Start difference. First operand 8058 states and 11882 transitions. Second operand 14 states. [2020-12-22 08:20:28,682 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-12-22 08:20:28,863 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-22 08:20:29,492 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:20:35,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:35,478 INFO L93 Difference]: Finished difference Result 18011 states and 26675 transitions. [2020-12-22 08:20:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:20:35,478 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-12-22 08:20:35,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:35,497 INFO L225 Difference]: With dead ends: 18011 [2020-12-22 08:20:35,497 INFO L226 Difference]: Without dead ends: 18007 [2020-12-22 08:20:35,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2020-12-22 08:20:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18007 states. [2020-12-22 08:20:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18007 to 8054. [2020-12-22 08:20:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8054 states. [2020-12-22 08:20:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8054 states to 8054 states and 11878 transitions. [2020-12-22 08:20:37,235 INFO L78 Accepts]: Start accepts. Automaton has 8054 states and 11878 transitions. Word has length 56 [2020-12-22 08:20:37,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:37,235 INFO L481 AbstractCegarLoop]: Abstraction has 8054 states and 11878 transitions. [2020-12-22 08:20:37,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:20:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8054 states and 11878 transitions. [2020-12-22 08:20:37,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:20:37,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:37,238 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] [2020-12-22 08:20:37,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:20:37,238 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:37,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:37,239 INFO L82 PathProgramCache]: Analyzing trace with hash -434174057, now seen corresponding path program 1 times [2020-12-22 08:20:37,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:37,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671881851] [2020-12-22 08:20:37,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:37,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671881851] [2020-12-22 08:20:37,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:37,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:20:37,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646397987] [2020-12-22 08:20:37,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:20:37,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:37,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:20:37,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:20:37,951 INFO L87 Difference]: Start difference. First operand 8054 states and 11878 transitions. Second operand 15 states. [2020-12-22 08:20:38,089 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:20:38,371 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:20:38,530 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-22 08:20:38,687 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 08:20:38,930 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:20:39,228 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:20:39,505 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:20:39,821 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-22 08:20:40,210 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:20:40,538 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-12-22 08:20:40,832 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 08:20:41,384 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:20:41,892 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 08:20:42,856 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 08:20:47,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:47,628 INFO L93 Difference]: Finished difference Result 16472 states and 24309 transitions. [2020-12-22 08:20:47,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:20:47,629 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-12-22 08:20:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:47,644 INFO L225 Difference]: With dead ends: 16472 [2020-12-22 08:20:47,645 INFO L226 Difference]: Without dead ends: 16239 [2020-12-22 08:20:47,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:20:47,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16239 states. [2020-12-22 08:20:49,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16239 to 8045. [2020-12-22 08:20:49,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8045 states. [2020-12-22 08:20:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8045 states to 8045 states and 11866 transitions. [2020-12-22 08:20:49,465 INFO L78 Accepts]: Start accepts. Automaton has 8045 states and 11866 transitions. Word has length 56 [2020-12-22 08:20:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:49,466 INFO L481 AbstractCegarLoop]: Abstraction has 8045 states and 11866 transitions. [2020-12-22 08:20:49,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:20:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8045 states and 11866 transitions. [2020-12-22 08:20:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:20:49,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:49,469 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] [2020-12-22 08:20:49,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:20:49,469 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:49,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:49,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1827161320, now seen corresponding path program 1 times [2020-12-22 08:20:49,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:49,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176569421] [2020-12-22 08:20:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:49,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176569421] [2020-12-22 08:20:49,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:49,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:49,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125570329] [2020-12-22 08:20:49,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:49,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:49,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:49,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:49,525 INFO L87 Difference]: Start difference. First operand 8045 states and 11866 transitions. Second operand 3 states. [2020-12-22 08:20:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:52,903 INFO L93 Difference]: Finished difference Result 20829 states and 30872 transitions. [2020-12-22 08:20:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:52,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 08:20:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:52,923 INFO L225 Difference]: With dead ends: 20829 [2020-12-22 08:20:52,923 INFO L226 Difference]: Without dead ends: 13491 [2020-12-22 08:20:52,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13491 states. [2020-12-22 08:20:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13491 to 13489. [2020-12-22 08:20:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13489 states. [2020-12-22 08:20:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13489 states to 13489 states and 19635 transitions. [2020-12-22 08:20:56,139 INFO L78 Accepts]: Start accepts. Automaton has 13489 states and 19635 transitions. Word has length 60 [2020-12-22 08:20:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:56,140 INFO L481 AbstractCegarLoop]: Abstraction has 13489 states and 19635 transitions. [2020-12-22 08:20:56,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 13489 states and 19635 transitions. [2020-12-22 08:20:56,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:20:56,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:56,143 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] [2020-12-22 08:20:56,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:20:56,144 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:56,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1073283694, now seen corresponding path program 1 times [2020-12-22 08:20:56,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:56,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607312617] [2020-12-22 08:20:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:56,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607312617] [2020-12-22 08:20:56,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:56,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:20:56,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406207830] [2020-12-22 08:20:56,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:20:56,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:56,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:20:56,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:20:56,223 INFO L87 Difference]: Start difference. First operand 13489 states and 19635 transitions. Second operand 5 states. [2020-12-22 08:20:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:58,919 INFO L93 Difference]: Finished difference Result 22795 states and 33211 transitions. [2020-12-22 08:20:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:20:58,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 08:20:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:58,931 INFO L225 Difference]: With dead ends: 22795 [2020-12-22 08:20:58,931 INFO L226 Difference]: Without dead ends: 9991 [2020-12-22 08:20:58,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:20:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9991 states. [2020-12-22 08:21:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9991 to 9987. [2020-12-22 08:21:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9987 states. [2020-12-22 08:21:01,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 14375 transitions. [2020-12-22 08:21:01,520 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 14375 transitions. Word has length 61 [2020-12-22 08:21:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:01,520 INFO L481 AbstractCegarLoop]: Abstraction has 9987 states and 14375 transitions. [2020-12-22 08:21:01,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:21:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 14375 transitions. [2020-12-22 08:21:01,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:21:01,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:01,524 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] [2020-12-22 08:21:01,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:21:01,524 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:01,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:01,525 INFO L82 PathProgramCache]: Analyzing trace with hash 778828119, now seen corresponding path program 1 times [2020-12-22 08:21:01,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:01,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885637389] [2020-12-22 08:21:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:01,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885637389] [2020-12-22 08:21:01,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:01,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:01,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936258097] [2020-12-22 08:21:01,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:01,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:01,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:01,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:01,574 INFO L87 Difference]: Start difference. First operand 9987 states and 14375 transitions. Second operand 3 states. [2020-12-22 08:21:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:06,230 INFO L93 Difference]: Finished difference Result 26831 states and 38800 transitions. [2020-12-22 08:21:06,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:06,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 08:21:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:06,246 INFO L225 Difference]: With dead ends: 26831 [2020-12-22 08:21:06,247 INFO L226 Difference]: Without dead ends: 17529 [2020-12-22 08:21:06,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17529 states. [2020-12-22 08:21:10,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17529 to 16417. [2020-12-22 08:21:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16417 states. [2020-12-22 08:21:10,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16417 states to 16417 states and 23553 transitions. [2020-12-22 08:21:10,653 INFO L78 Accepts]: Start accepts. Automaton has 16417 states and 23553 transitions. Word has length 61 [2020-12-22 08:21:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:10,653 INFO L481 AbstractCegarLoop]: Abstraction has 16417 states and 23553 transitions. [2020-12-22 08:21:10,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 16417 states and 23553 transitions. [2020-12-22 08:21:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:21:10,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:10,657 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] [2020-12-22 08:21:10,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:21:10,657 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:10,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1461952547, now seen corresponding path program 1 times [2020-12-22 08:21:10,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:10,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473426487] [2020-12-22 08:21:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:10,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473426487] [2020-12-22 08:21:10,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:10,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:21:10,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441726721] [2020-12-22 08:21:10,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:21:10,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:10,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:21:10,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:21:10,750 INFO L87 Difference]: Start difference. First operand 16417 states and 23553 transitions. Second operand 6 states. [2020-12-22 08:21:19,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:19,554 INFO L93 Difference]: Finished difference Result 29774 states and 42033 transitions. [2020-12-22 08:21:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:21:19,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-12-22 08:21:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:19,586 INFO L225 Difference]: With dead ends: 29774 [2020-12-22 08:21:19,586 INFO L226 Difference]: Without dead ends: 29772 [2020-12-22 08:21:19,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:21:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29772 states. [2020-12-22 08:21:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29772 to 17104. [2020-12-22 08:21:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17104 states. [2020-12-22 08:21:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17104 states to 17104 states and 24240 transitions. [2020-12-22 08:21:24,451 INFO L78 Accepts]: Start accepts. Automaton has 17104 states and 24240 transitions. Word has length 64 [2020-12-22 08:21:24,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:24,452 INFO L481 AbstractCegarLoop]: Abstraction has 17104 states and 24240 transitions. [2020-12-22 08:21:24,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:21:24,452 INFO L276 IsEmpty]: Start isEmpty. Operand 17104 states and 24240 transitions. [2020-12-22 08:21:24,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:21:24,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:24,455 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] [2020-12-22 08:21:24,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:21:24,455 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:24,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1754067009, now seen corresponding path program 1 times [2020-12-22 08:21:24,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:24,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105857321] [2020-12-22 08:21:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:24,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105857321] [2020-12-22 08:21:24,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:24,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:24,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570367047] [2020-12-22 08:21:24,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:24,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:24,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:24,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:24,510 INFO L87 Difference]: Start difference. First operand 17104 states and 24240 transitions. Second operand 3 states. [2020-12-22 08:21:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:33,316 INFO L93 Difference]: Finished difference Result 45938 states and 64967 transitions. [2020-12-22 08:21:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:33,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 08:21:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:33,352 INFO L225 Difference]: With dead ends: 45938 [2020-12-22 08:21:33,352 INFO L226 Difference]: Without dead ends: 29463 [2020-12-22 08:21:33,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29463 states. [2020-12-22 08:21:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29463 to 29003. [2020-12-22 08:21:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29003 states. [2020-12-22 08:21:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29003 states to 29003 states and 40339 transitions. [2020-12-22 08:21:42,320 INFO L78 Accepts]: Start accepts. Automaton has 29003 states and 40339 transitions. Word has length 65 [2020-12-22 08:21:42,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:42,320 INFO L481 AbstractCegarLoop]: Abstraction has 29003 states and 40339 transitions. [2020-12-22 08:21:42,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 29003 states and 40339 transitions. [2020-12-22 08:21:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:21:42,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:42,324 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] [2020-12-22 08:21:42,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:21:42,324 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:42,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1924581840, now seen corresponding path program 1 times [2020-12-22 08:21:42,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:42,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730535878] [2020-12-22 08:21:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:42,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730535878] [2020-12-22 08:21:42,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:42,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:42,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718213705] [2020-12-22 08:21:42,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:42,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:42,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:42,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:42,377 INFO L87 Difference]: Start difference. First operand 29003 states and 40339 transitions. Second operand 3 states. [2020-12-22 08:21:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:50,737 INFO L93 Difference]: Finished difference Result 36015 states and 49979 transitions. [2020-12-22 08:21:50,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:50,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 08:21:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:50,772 INFO L225 Difference]: With dead ends: 36015 [2020-12-22 08:21:50,773 INFO L226 Difference]: Without dead ends: 28988 [2020-12-22 08:21:50,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28988 states. [2020-12-22 08:21:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28988 to 23536. [2020-12-22 08:21:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23536 states. [2020-12-22 08:21:58,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23536 states to 23536 states and 32252 transitions. [2020-12-22 08:21:58,572 INFO L78 Accepts]: Start accepts. Automaton has 23536 states and 32252 transitions. Word has length 67 [2020-12-22 08:21:58,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:58,572 INFO L481 AbstractCegarLoop]: Abstraction has 23536 states and 32252 transitions. [2020-12-22 08:21:58,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:58,572 INFO L276 IsEmpty]: Start isEmpty. Operand 23536 states and 32252 transitions. [2020-12-22 08:21:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:21:58,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:58,576 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] [2020-12-22 08:21:58,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:21:58,576 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:58,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2020701073, now seen corresponding path program 1 times [2020-12-22 08:21:58,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:58,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406258630] [2020-12-22 08:21:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:58,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406258630] [2020-12-22 08:21:58,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:58,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:21:58,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635307268] [2020-12-22 08:21:58,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:21:58,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:58,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:21:58,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:21:58,635 INFO L87 Difference]: Start difference. First operand 23536 states and 32252 transitions. Second operand 5 states. [2020-12-22 08:22:16,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:16,217 INFO L93 Difference]: Finished difference Result 69718 states and 94976 transitions. [2020-12-22 08:22:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:22:16,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 08:22:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:16,268 INFO L225 Difference]: With dead ends: 69718 [2020-12-22 08:22:16,269 INFO L226 Difference]: Without dead ends: 46816 [2020-12-22 08:22:16,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:22:16,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46816 states. [2020-12-22 08:22:25,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46816 to 27473. [2020-12-22 08:22:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27473 states. [2020-12-22 08:22:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27473 states to 27473 states and 36681 transitions. [2020-12-22 08:22:25,338 INFO L78 Accepts]: Start accepts. Automaton has 27473 states and 36681 transitions. Word has length 69 [2020-12-22 08:22:25,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:25,339 INFO L481 AbstractCegarLoop]: Abstraction has 27473 states and 36681 transitions. [2020-12-22 08:22:25,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:22:25,339 INFO L276 IsEmpty]: Start isEmpty. Operand 27473 states and 36681 transitions. [2020-12-22 08:22:25,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:22:25,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:25,343 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] [2020-12-22 08:22:25,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:22:25,343 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:25,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:25,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1561750269, now seen corresponding path program 1 times [2020-12-22 08:22:25,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:25,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164590340] [2020-12-22 08:22:25,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:25,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164590340] [2020-12-22 08:22:25,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:25,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:22:25,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38579615] [2020-12-22 08:22:25,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:22:25,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:25,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:22:25,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:22:25,489 INFO L87 Difference]: Start difference. First operand 27473 states and 36681 transitions. Second operand 6 states. [2020-12-22 08:22:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:45,470 INFO L93 Difference]: Finished difference Result 82853 states and 110984 transitions. [2020-12-22 08:22:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:22:45,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 08:22:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:45,550 INFO L225 Difference]: With dead ends: 82853 [2020-12-22 08:22:45,550 INFO L226 Difference]: Without dead ends: 59026 [2020-12-22 08:22:45,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:22:45,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59026 states. [2020-12-22 08:23:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59026 to 56514. [2020-12-22 08:23:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56514 states. [2020-12-22 08:23:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56514 states to 56514 states and 75391 transitions. [2020-12-22 08:23:04,446 INFO L78 Accepts]: Start accepts. Automaton has 56514 states and 75391 transitions. Word has length 77 [2020-12-22 08:23:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:04,446 INFO L481 AbstractCegarLoop]: Abstraction has 56514 states and 75391 transitions. [2020-12-22 08:23:04,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:23:04,446 INFO L276 IsEmpty]: Start isEmpty. Operand 56514 states and 75391 transitions. [2020-12-22 08:23:04,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:23:04,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:04,453 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] [2020-12-22 08:23:04,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:23:04,454 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:04,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:04,454 INFO L82 PathProgramCache]: Analyzing trace with hash 531488628, now seen corresponding path program 1 times [2020-12-22 08:23:04,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:04,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174101940] [2020-12-22 08:23:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:04,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174101940] [2020-12-22 08:23:04,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:04,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:23:04,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848735287] [2020-12-22 08:23:04,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:23:04,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:04,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:23:04,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:04,586 INFO L87 Difference]: Start difference. First operand 56514 states and 75391 transitions. Second operand 6 states.