/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.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:17:01,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:17:01,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:17:01,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:17:01,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:17:01,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:17:01,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:17:01,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:17:01,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:17:01,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:17:01,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:17:01,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:17:01,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:17:01,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:17:01,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:17:01,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:17:02,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:17:02,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:17:02,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:17:02,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:17:02,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:17:02,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:17:02,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:17:02,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:17:02,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:17:02,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:17:02,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:17:02,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:17:02,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:17:02,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:17:02,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:17:02,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:17:02,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:17:02,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:17:02,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:17:02,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:17:02,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:17:02,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:17:02,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:17:02,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:17:02,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:17:02,135 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:17:02,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:17:02,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:17:02,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:17:02,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:17:02,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:17:02,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:17:02,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:17:02,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:17:02,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:17:02,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:17:02,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:17:02,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:17:02,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:17:02,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:17:02,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:17:02,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:17:02,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:17:02,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:17:02,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:17:02,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:17:02,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:17:02,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:17:02,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:17:02,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:17:02,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:17:02,634 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:17:02,635 INFO L432 ainManager$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.BOUNDED-6.pals.c.v+sep-reducer.c [2020-12-22 08:17:02,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746d9351e/81a2290b21524411b5757fc795957bc0/FLAGc00e36e4f [2020-12-22 08:17:03,687 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:17:03,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-12-22 08:17:03,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746d9351e/81a2290b21524411b5757fc795957bc0/FLAGc00e36e4f [2020-12-22 08:17:04,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746d9351e/81a2290b21524411b5757fc795957bc0 [2020-12-22 08:17:04,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:17:04,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:17:04,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:17:04,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:17:04,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:17:04,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:17:04" (1/1) ... [2020-12-22 08:17:04,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d766f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:04, skipping insertion in model container [2020-12-22 08:17:04,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:17:04" (1/1) ... [2020-12-22 08:17:04,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:17:04,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:17:04,765 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.BOUNDED-6.pals.c.v+sep-reducer.c[8044,8057] [2020-12-22 08:17:04,794 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.BOUNDED-6.pals.c.v+sep-reducer.c[12212,12225] [2020-12-22 08:17:04,838 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.BOUNDED-6.pals.c.v+sep-reducer.c[19962,19975] [2020-12-22 08:17:04,912 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.BOUNDED-6.pals.c.v+sep-reducer.c[26694,26707] [2020-12-22 08:17:05,025 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.BOUNDED-6.pals.c.v+sep-reducer.c[47559,47572] [2020-12-22 08:17:05,108 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.BOUNDED-6.pals.c.v+sep-reducer.c[72661,72674] [2020-12-22 08:17:05,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:17:05,500 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:17:05,554 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.BOUNDED-6.pals.c.v+sep-reducer.c[8044,8057] [2020-12-22 08:17:05,591 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.BOUNDED-6.pals.c.v+sep-reducer.c[12212,12225] [2020-12-22 08:17:05,649 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.BOUNDED-6.pals.c.v+sep-reducer.c[19962,19975] [2020-12-22 08:17:05,704 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.BOUNDED-6.pals.c.v+sep-reducer.c[26694,26707] [2020-12-22 08:17:05,855 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.BOUNDED-6.pals.c.v+sep-reducer.c[47559,47572] [2020-12-22 08:17:05,915 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.BOUNDED-6.pals.c.v+sep-reducer.c[72661,72674] [2020-12-22 08:17:06,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:17:06,101 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:17:06,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06 WrapperNode [2020-12-22 08:17:06,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:17:06,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:17:06,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:17:06,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:17:06,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (1/1) ... [2020-12-22 08:17:06,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (1/1) ... [2020-12-22 08:17:06,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:17:06,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:17:06,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:17:06,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:17:06,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (1/1) ... [2020-12-22 08:17:06,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (1/1) ... [2020-12-22 08:17:06,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (1/1) ... [2020-12-22 08:17:06,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (1/1) ... [2020-12-22 08:17:06,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (1/1) ... [2020-12-22 08:17:06,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (1/1) ... [2020-12-22 08:17:06,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (1/1) ... [2020-12-22 08:17:06,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:17:06,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:17:06,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:17:06,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:17:06,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (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 08:17:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:17:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:17:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:17:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:17:10,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:17:10,624 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:17:10,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:17:10 BoogieIcfgContainer [2020-12-22 08:17:10,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:17:10,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:17:10,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:17:10,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:17:10,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:17:04" (1/3) ... [2020-12-22 08:17:10,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c98f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:17:10, skipping insertion in model container [2020-12-22 08:17:10,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:06" (2/3) ... [2020-12-22 08:17:10,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c98f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:17:10, skipping insertion in model container [2020-12-22 08:17:10,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:17:10" (3/3) ... [2020-12-22 08:17:10,642 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-12-22 08:17:10,650 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:17:10,657 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 08:17:10,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 08:17:10,735 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:17:10,735 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:17:10,735 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:17:10,735 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:17:10,735 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:17:10,736 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:17:10,736 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:17:10,736 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:17:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states. [2020-12-22 08:17:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:17:10,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:10,814 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 08:17:10,815 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 08:17:10,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:10,821 INFO L82 PathProgramCache]: Analyzing trace with hash 46255632, now seen corresponding path program 1 times [2020-12-22 08:17:10,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:10,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452901323] [2020-12-22 08:17:10,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:11,411 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 08:17:11,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452901323] [2020-12-22 08:17:11,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:11,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:17:11,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715664149] [2020-12-22 08:17:11,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:17:11,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:11,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:17:11,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:17:11,440 INFO L87 Difference]: Start difference. First operand 1190 states. Second operand 6 states. [2020-12-22 08:17:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:13,137 INFO L93 Difference]: Finished difference Result 2382 states and 4085 transitions. [2020-12-22 08:17:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:17:13,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 08:17:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:13,180 INFO L225 Difference]: With dead ends: 2382 [2020-12-22 08:17:13,180 INFO L226 Difference]: Without dead ends: 1613 [2020-12-22 08:17:13,193 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 08:17:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-12-22 08:17:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1590. [2020-12-22 08:17:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-12-22 08:17:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2066 transitions. [2020-12-22 08:17:13,369 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2066 transitions. Word has length 52 [2020-12-22 08:17:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:13,370 INFO L481 AbstractCegarLoop]: Abstraction has 1590 states and 2066 transitions. [2020-12-22 08:17:13,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:17:13,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2066 transitions. [2020-12-22 08:17:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:17:13,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:13,375 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 08:17:13,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:17:13,376 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 08:17:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:13,376 INFO L82 PathProgramCache]: Analyzing trace with hash -625695834, now seen corresponding path program 1 times [2020-12-22 08:17:13,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:13,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912276487] [2020-12-22 08:17:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:13,548 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 08:17:13,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912276487] [2020-12-22 08:17:13,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:13,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:17:13,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715448816] [2020-12-22 08:17:13,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:17:13,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:13,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:17:13,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:17:13,552 INFO L87 Difference]: Start difference. First operand 1590 states and 2066 transitions. Second operand 6 states. [2020-12-22 08:17:15,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:15,042 INFO L93 Difference]: Finished difference Result 3486 states and 4650 transitions. [2020-12-22 08:17:15,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:17:15,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 08:17:15,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:15,057 INFO L225 Difference]: With dead ends: 3486 [2020-12-22 08:17:15,058 INFO L226 Difference]: Without dead ends: 2526 [2020-12-22 08:17:15,061 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 08:17:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2020-12-22 08:17:15,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2510. [2020-12-22 08:17:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2510 states. [2020-12-22 08:17:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3350 transitions. [2020-12-22 08:17:15,195 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3350 transitions. Word has length 52 [2020-12-22 08:17:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:15,196 INFO L481 AbstractCegarLoop]: Abstraction has 2510 states and 3350 transitions. [2020-12-22 08:17:15,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:17:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3350 transitions. [2020-12-22 08:17:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:17:15,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:15,200 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 08:17:15,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:17:15,201 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 08:17:15,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:15,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1958316630, now seen corresponding path program 1 times [2020-12-22 08:17:15,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:15,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561910161] [2020-12-22 08:17:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:15,308 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 08:17:15,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561910161] [2020-12-22 08:17:15,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:15,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:17:15,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228183119] [2020-12-22 08:17:15,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:17:15,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:15,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:17:15,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:17:15,311 INFO L87 Difference]: Start difference. First operand 2510 states and 3350 transitions. Second operand 5 states. [2020-12-22 08:17:16,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:16,571 INFO L93 Difference]: Finished difference Result 5215 states and 7038 transitions. [2020-12-22 08:17:16,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:17:16,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-12-22 08:17:16,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:16,591 INFO L225 Difference]: With dead ends: 5215 [2020-12-22 08:17:16,592 INFO L226 Difference]: Without dead ends: 3900 [2020-12-22 08:17:16,595 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 08:17:16,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3900 states. [2020-12-22 08:17:16,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3900 to 3894. [2020-12-22 08:17:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3894 states. [2020-12-22 08:17:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 5170 transitions. [2020-12-22 08:17:16,790 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 5170 transitions. Word has length 52 [2020-12-22 08:17:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:16,790 INFO L481 AbstractCegarLoop]: Abstraction has 3894 states and 5170 transitions. [2020-12-22 08:17:16,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:17:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 5170 transitions. [2020-12-22 08:17:16,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:17:16,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:16,796 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 08:17:16,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:17:16,796 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 08:17:16,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:16,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1639759782, now seen corresponding path program 1 times [2020-12-22 08:17:16,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:16,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418671573] [2020-12-22 08:17:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:17,031 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 08:17:17,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418671573] [2020-12-22 08:17:17,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:17,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:17:17,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332702800] [2020-12-22 08:17:17,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:17:17,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:17,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:17:17,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:17:17,034 INFO L87 Difference]: Start difference. First operand 3894 states and 5170 transitions. Second operand 9 states. [2020-12-22 08:17:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:20,019 INFO L93 Difference]: Finished difference Result 10337 states and 14549 transitions. [2020-12-22 08:17:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:17:20,019 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-12-22 08:17:20,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:20,066 INFO L225 Difference]: With dead ends: 10337 [2020-12-22 08:17:20,066 INFO L226 Difference]: Without dead ends: 9281 [2020-12-22 08:17:20,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:17:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9281 states. [2020-12-22 08:17:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9281 to 3894. [2020-12-22 08:17:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3894 states. [2020-12-22 08:17:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 5169 transitions. [2020-12-22 08:17:20,473 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 5169 transitions. Word has length 54 [2020-12-22 08:17:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:20,473 INFO L481 AbstractCegarLoop]: Abstraction has 3894 states and 5169 transitions. [2020-12-22 08:17:20,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:17:20,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 5169 transitions. [2020-12-22 08:17:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:17:20,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:20,479 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 08:17:20,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:17:20,479 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 08:17:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:20,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1969154310, now seen corresponding path program 1 times [2020-12-22 08:17:20,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:20,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794612088] [2020-12-22 08:17:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:20,716 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 08:17:20,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794612088] [2020-12-22 08:17:20,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:20,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:17:20,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510680075] [2020-12-22 08:17:20,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:17:20,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:20,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:17:20,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:17:20,719 INFO L87 Difference]: Start difference. First operand 3894 states and 5169 transitions. Second operand 9 states. [2020-12-22 08:17:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:24,518 INFO L93 Difference]: Finished difference Result 8304 states and 11715 transitions. [2020-12-22 08:17:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:17:24,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-12-22 08:17:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:24,558 INFO L225 Difference]: With dead ends: 8304 [2020-12-22 08:17:24,559 INFO L226 Difference]: Without dead ends: 8298 [2020-12-22 08:17:24,563 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 08:17:24,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2020-12-22 08:17:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 3894. [2020-12-22 08:17:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3894 states. [2020-12-22 08:17:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 5168 transitions. [2020-12-22 08:17:24,865 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 5168 transitions. Word has length 54 [2020-12-22 08:17:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:24,866 INFO L481 AbstractCegarLoop]: Abstraction has 3894 states and 5168 transitions. [2020-12-22 08:17:24,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:17:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 5168 transitions. [2020-12-22 08:17:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:17:24,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:24,871 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 08:17:24,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:17:24,871 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 08:17:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash -91421350, now seen corresponding path program 1 times [2020-12-22 08:17:24,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:24,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065032916] [2020-12-22 08:17:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:25,094 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 08:17:25,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065032916] [2020-12-22 08:17:25,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:25,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:17:25,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774719541] [2020-12-22 08:17:25,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:17:25,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:25,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:17:25,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:17:25,097 INFO L87 Difference]: Start difference. First operand 3894 states and 5168 transitions. Second operand 8 states. [2020-12-22 08:17:28,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:28,014 INFO L93 Difference]: Finished difference Result 8913 states and 12713 transitions. [2020-12-22 08:17:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:17:28,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-12-22 08:17:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:28,035 INFO L225 Difference]: With dead ends: 8913 [2020-12-22 08:17:28,036 INFO L226 Difference]: Without dead ends: 7571 [2020-12-22 08:17:28,041 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 08:17:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7571 states. [2020-12-22 08:17:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7571 to 3894. [2020-12-22 08:17:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3894 states. [2020-12-22 08:17:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 5167 transitions. [2020-12-22 08:17:28,377 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 5167 transitions. Word has length 54 [2020-12-22 08:17:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:28,382 INFO L481 AbstractCegarLoop]: Abstraction has 3894 states and 5167 transitions. [2020-12-22 08:17:28,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:17:28,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 5167 transitions. [2020-12-22 08:17:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:17:28,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:28,393 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 08:17:28,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:17:28,394 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 08:17:28,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:28,394 INFO L82 PathProgramCache]: Analyzing trace with hash -217892301, now seen corresponding path program 1 times [2020-12-22 08:17:28,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:28,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056813379] [2020-12-22 08:17:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:28,486 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 08:17:28,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056813379] [2020-12-22 08:17:28,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:28,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:28,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962374328] [2020-12-22 08:17:28,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:28,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:28,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:28,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:28,491 INFO L87 Difference]: Start difference. First operand 3894 states and 5167 transitions. Second operand 3 states. [2020-12-22 08:17:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:28,993 INFO L93 Difference]: Finished difference Result 6088 states and 8411 transitions. [2020-12-22 08:17:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:28,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:17:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:29,003 INFO L225 Difference]: With dead ends: 6088 [2020-12-22 08:17:29,003 INFO L226 Difference]: Without dead ends: 3765 [2020-12-22 08:17:29,007 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 08:17:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2020-12-22 08:17:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3763. [2020-12-22 08:17:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3763 states. [2020-12-22 08:17:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 5043 transitions. [2020-12-22 08:17:29,354 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 5043 transitions. Word has length 55 [2020-12-22 08:17:29,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:29,354 INFO L481 AbstractCegarLoop]: Abstraction has 3763 states and 5043 transitions. [2020-12-22 08:17:29,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:29,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 5043 transitions. [2020-12-22 08:17:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:17:29,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:29,358 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 08:17:29,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:17:29,359 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 08:17:29,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1212692211, now seen corresponding path program 1 times [2020-12-22 08:17:29,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:29,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537707254] [2020-12-22 08:17:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:29,428 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 08:17:29,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537707254] [2020-12-22 08:17:29,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:29,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:29,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533847083] [2020-12-22 08:17:29,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:29,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:29,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:29,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:29,437 INFO L87 Difference]: Start difference. First operand 3763 states and 5043 transitions. Second operand 3 states. [2020-12-22 08:17:29,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:29,914 INFO L93 Difference]: Finished difference Result 7171 states and 10158 transitions. [2020-12-22 08:17:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:29,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:17:29,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:29,925 INFO L225 Difference]: With dead ends: 7171 [2020-12-22 08:17:29,925 INFO L226 Difference]: Without dead ends: 5084 [2020-12-22 08:17:29,929 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 08:17:29,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2020-12-22 08:17:30,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 4494. [2020-12-22 08:17:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4494 states. [2020-12-22 08:17:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 6144 transitions. [2020-12-22 08:17:30,364 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 6144 transitions. Word has length 55 [2020-12-22 08:17:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:30,364 INFO L481 AbstractCegarLoop]: Abstraction has 4494 states and 6144 transitions. [2020-12-22 08:17:30,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 6144 transitions. [2020-12-22 08:17:30,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:17:30,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:30,368 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 08:17:30,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:17:30,368 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 08:17:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:30,369 INFO L82 PathProgramCache]: Analyzing trace with hash 508156110, now seen corresponding path program 1 times [2020-12-22 08:17:30,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:30,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188538944] [2020-12-22 08:17:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:30,429 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 08:17:30,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188538944] [2020-12-22 08:17:30,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:30,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:30,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236345098] [2020-12-22 08:17:30,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:30,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:30,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:30,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:30,432 INFO L87 Difference]: Start difference. First operand 4494 states and 6144 transitions. Second operand 3 states. [2020-12-22 08:17:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:31,046 INFO L93 Difference]: Finished difference Result 9594 states and 13675 transitions. [2020-12-22 08:17:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:31,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:17:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:31,060 INFO L225 Difference]: With dead ends: 9594 [2020-12-22 08:17:31,061 INFO L226 Difference]: Without dead ends: 6575 [2020-12-22 08:17:31,067 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 08:17:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2020-12-22 08:17:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 5693. [2020-12-22 08:17:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5693 states. [2020-12-22 08:17:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5693 states to 5693 states and 7844 transitions. [2020-12-22 08:17:31,795 INFO L78 Accepts]: Start accepts. Automaton has 5693 states and 7844 transitions. Word has length 55 [2020-12-22 08:17:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:31,796 INFO L481 AbstractCegarLoop]: Abstraction has 5693 states and 7844 transitions. [2020-12-22 08:17:31,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5693 states and 7844 transitions. [2020-12-22 08:17:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:17:31,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:31,800 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 08:17:31,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:17:31,800 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 08:17:31,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:31,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1409707165, now seen corresponding path program 1 times [2020-12-22 08:17:31,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:31,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133922457] [2020-12-22 08:17:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:31,853 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 08:17:31,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133922457] [2020-12-22 08:17:31,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:31,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:31,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000787980] [2020-12-22 08:17:31,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:31,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:31,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:31,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:31,855 INFO L87 Difference]: Start difference. First operand 5693 states and 7844 transitions. Second operand 3 states. [2020-12-22 08:17:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:32,936 INFO L93 Difference]: Finished difference Result 13467 states and 19081 transitions. [2020-12-22 08:17:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:32,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:17:32,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:32,951 INFO L225 Difference]: With dead ends: 13467 [2020-12-22 08:17:32,951 INFO L226 Difference]: Without dead ends: 8614 [2020-12-22 08:17:32,961 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 08:17:32,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8614 states. [2020-12-22 08:17:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8614 to 6820. [2020-12-22 08:17:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6820 states. [2020-12-22 08:17:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6820 states to 6820 states and 9575 transitions. [2020-12-22 08:17:33,764 INFO L78 Accepts]: Start accepts. Automaton has 6820 states and 9575 transitions. Word has length 56 [2020-12-22 08:17:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:33,764 INFO L481 AbstractCegarLoop]: Abstraction has 6820 states and 9575 transitions. [2020-12-22 08:17:33,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:33,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6820 states and 9575 transitions. [2020-12-22 08:17:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:17:33,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:33,767 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 08:17:33,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:17:33,768 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 08:17:33,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:33,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1142157029, now seen corresponding path program 1 times [2020-12-22 08:17:33,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:33,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453028499] [2020-12-22 08:17:33,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:34,771 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-12-22 08:17:34,997 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 08:17:34,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453028499] [2020-12-22 08:17:34,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:34,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:17:34,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802015910] [2020-12-22 08:17:34,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:17:34,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:34,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:17:34,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:17:34,999 INFO L87 Difference]: Start difference. First operand 6820 states and 9575 transitions. Second operand 16 states. [2020-12-22 08:17:35,207 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-12-22 08:17:35,520 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-12-22 08:17:35,708 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-22 08:17:36,016 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-12-22 08:17:36,261 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-12-22 08:17:36,593 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-12-22 08:17:37,068 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-12-22 08:17:37,544 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-12-22 08:17:37,953 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-12-22 08:17:38,357 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-12-22 08:17:38,672 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-12-22 08:17:39,151 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-22 08:17:39,867 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-22 08:17:40,405 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-12-22 08:17:45,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:45,453 INFO L93 Difference]: Finished difference Result 18707 states and 26653 transitions. [2020-12-22 08:17:45,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:17:45,454 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-12-22 08:17:45,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:45,473 INFO L225 Difference]: With dead ends: 18707 [2020-12-22 08:17:45,474 INFO L226 Difference]: Without dead ends: 18500 [2020-12-22 08:17:45,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:17:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18500 states. [2020-12-22 08:17:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18500 to 6807. [2020-12-22 08:17:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6807 states. [2020-12-22 08:17:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6807 states to 6807 states and 9560 transitions. [2020-12-22 08:17:47,004 INFO L78 Accepts]: Start accepts. Automaton has 6807 states and 9560 transitions. Word has length 56 [2020-12-22 08:17:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:47,005 INFO L481 AbstractCegarLoop]: Abstraction has 6807 states and 9560 transitions. [2020-12-22 08:17:47,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:17:47,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6807 states and 9560 transitions. [2020-12-22 08:17:47,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:17:47,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:47,007 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 08:17:47,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:17:47,008 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 08:17:47,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:47,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1119831979, now seen corresponding path program 1 times [2020-12-22 08:17:47,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:47,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419157165] [2020-12-22 08:17:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:47,051 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 08:17:47,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419157165] [2020-12-22 08:17:47,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:47,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:47,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385439585] [2020-12-22 08:17:47,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:47,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:47,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:47,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:47,053 INFO L87 Difference]: Start difference. First operand 6807 states and 9560 transitions. Second operand 3 states. [2020-12-22 08:17:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:48,667 INFO L93 Difference]: Finished difference Result 17081 states and 24488 transitions. [2020-12-22 08:17:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:48,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:17:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:48,684 INFO L225 Difference]: With dead ends: 17081 [2020-12-22 08:17:48,684 INFO L226 Difference]: Without dead ends: 10924 [2020-12-22 08:17:48,694 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 08:17:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10924 states. [2020-12-22 08:17:50,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10924 to 8498. [2020-12-22 08:17:50,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8498 states. [2020-12-22 08:17:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8498 states to 8498 states and 12106 transitions. [2020-12-22 08:17:50,292 INFO L78 Accepts]: Start accepts. Automaton has 8498 states and 12106 transitions. Word has length 56 [2020-12-22 08:17:50,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:50,292 INFO L481 AbstractCegarLoop]: Abstraction has 8498 states and 12106 transitions. [2020-12-22 08:17:50,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:50,292 INFO L276 IsEmpty]: Start isEmpty. Operand 8498 states and 12106 transitions. [2020-12-22 08:17:50,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:17:50,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:50,295 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] [2020-12-22 08:17:50,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:17:50,295 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 08:17:50,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:50,296 INFO L82 PathProgramCache]: Analyzing trace with hash -198475703, now seen corresponding path program 1 times [2020-12-22 08:17:50,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:50,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339908510] [2020-12-22 08:17:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:51,047 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 08:17:51,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339908510] [2020-12-22 08:17:51,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:51,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:17:51,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116151196] [2020-12-22 08:17:51,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:17:51,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:51,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:17:51,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:17:51,049 INFO L87 Difference]: Start difference. First operand 8498 states and 12106 transitions. Second operand 19 states. [2020-12-22 08:17:51,282 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-12-22 08:17:51,766 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-12-22 08:17:52,037 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-12-22 08:17:52,320 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-22 08:17:52,517 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-22 08:17:52,980 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:18:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:02,636 INFO L93 Difference]: Finished difference Result 23657 states and 34037 transitions. [2020-12-22 08:18:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:18:02,637 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-12-22 08:18:02,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:02,660 INFO L225 Difference]: With dead ends: 23657 [2020-12-22 08:18:02,660 INFO L226 Difference]: Without dead ends: 23653 [2020-12-22 08:18:02,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=241, Invalid=1019, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:18:02,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23653 states. [2020-12-22 08:18:04,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23653 to 8498. [2020-12-22 08:18:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8498 states. [2020-12-22 08:18:04,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8498 states to 8498 states and 12105 transitions. [2020-12-22 08:18:04,214 INFO L78 Accepts]: Start accepts. Automaton has 8498 states and 12105 transitions. Word has length 57 [2020-12-22 08:18:04,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:04,215 INFO L481 AbstractCegarLoop]: Abstraction has 8498 states and 12105 transitions. [2020-12-22 08:18:04,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:18:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 8498 states and 12105 transitions. [2020-12-22 08:18:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:18:04,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:04,217 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] [2020-12-22 08:18:04,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:18:04,217 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 08:18:04,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:04,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1444192760, now seen corresponding path program 1 times [2020-12-22 08:18:04,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:04,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257947254] [2020-12-22 08:18:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:05,075 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 08:18:05,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257947254] [2020-12-22 08:18:05,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:05,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:18:05,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550198185] [2020-12-22 08:18:05,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:18:05,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:05,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:18:05,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:18:05,078 INFO L87 Difference]: Start difference. First operand 8498 states and 12105 transitions. Second operand 19 states. [2020-12-22 08:18:05,319 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-12-22 08:18:05,660 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:18:05,938 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:18:06,293 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:18:06,580 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 08:18:06,897 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:18:07,133 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:18:07,403 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-22 08:18:08,330 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:18:09,208 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 08:18:11,770 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-22 08:18:12,360 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:18:13,160 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:18:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:18,938 INFO L93 Difference]: Finished difference Result 28862 states and 41637 transitions. [2020-12-22 08:18:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:18:18,939 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-12-22 08:18:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:18,968 INFO L225 Difference]: With dead ends: 28862 [2020-12-22 08:18:18,968 INFO L226 Difference]: Without dead ends: 28858 [2020-12-22 08:18:18,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:18:18,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28858 states. [2020-12-22 08:18:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28858 to 8511. [2020-12-22 08:18:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8511 states. [2020-12-22 08:18:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8511 states to 8511 states and 12123 transitions. [2020-12-22 08:18:20,900 INFO L78 Accepts]: Start accepts. Automaton has 8511 states and 12123 transitions. Word has length 57 [2020-12-22 08:18:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:20,900 INFO L481 AbstractCegarLoop]: Abstraction has 8511 states and 12123 transitions. [2020-12-22 08:18:20,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:18:20,900 INFO L276 IsEmpty]: Start isEmpty. Operand 8511 states and 12123 transitions. [2020-12-22 08:18:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:18:20,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:20,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:20,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:18:20,903 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 08:18:20,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:20,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1255854773, now seen corresponding path program 1 times [2020-12-22 08:18:20,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:20,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831718557] [2020-12-22 08:18:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:21,525 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 08:18:21,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831718557] [2020-12-22 08:18:21,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:21,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:18:21,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365822184] [2020-12-22 08:18:21,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:18:21,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:21,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:18:21,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:18:21,527 INFO L87 Difference]: Start difference. First operand 8511 states and 12123 transitions. Second operand 16 states. [2020-12-22 08:18:22,153 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 08:18:22,389 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-12-22 08:18:22,587 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-22 08:18:22,975 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-22 08:18:23,430 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:18:23,789 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-12-22 08:18:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:30,099 INFO L93 Difference]: Finished difference Result 16917 states and 24181 transitions. [2020-12-22 08:18:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:18:30,100 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-12-22 08:18:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:30,114 INFO L225 Difference]: With dead ends: 16917 [2020-12-22 08:18:30,115 INFO L226 Difference]: Without dead ends: 16913 [2020-12-22 08:18:30,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:18:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16913 states. [2020-12-22 08:18:31,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16913 to 8507. [2020-12-22 08:18:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8507 states. [2020-12-22 08:18:31,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8507 states to 8507 states and 12119 transitions. [2020-12-22 08:18:31,886 INFO L78 Accepts]: Start accepts. Automaton has 8507 states and 12119 transitions. Word has length 58 [2020-12-22 08:18:31,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:31,886 INFO L481 AbstractCegarLoop]: Abstraction has 8507 states and 12119 transitions. [2020-12-22 08:18:31,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:18:31,886 INFO L276 IsEmpty]: Start isEmpty. Operand 8507 states and 12119 transitions. [2020-12-22 08:18:31,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:18:31,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:31,888 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] [2020-12-22 08:18:31,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:18:31,889 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 08:18:31,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:31,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2124806246, now seen corresponding path program 1 times [2020-12-22 08:18:31,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:31,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026537219] [2020-12-22 08:18:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:32,334 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 08:18:32,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026537219] [2020-12-22 08:18:32,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:32,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:18:32,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961244361] [2020-12-22 08:18:32,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:18:32,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:32,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:18:32,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:18:32,337 INFO L87 Difference]: Start difference. First operand 8507 states and 12119 transitions. Second operand 14 states. [2020-12-22 08:18:33,020 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:18:33,207 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-12-22 08:18:33,665 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-12-22 08:18:34,033 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-12-22 08:18:34,960 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-22 08:18:35,581 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-22 08:18:36,713 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-22 08:18:37,340 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-12-22 08:18:39,638 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-22 08:18:40,177 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-22 08:18:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:41,612 INFO L93 Difference]: Finished difference Result 18504 states and 26324 transitions. [2020-12-22 08:18:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:18:41,613 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-12-22 08:18:41,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:41,629 INFO L225 Difference]: With dead ends: 18504 [2020-12-22 08:18:41,630 INFO L226 Difference]: Without dead ends: 18256 [2020-12-22 08:18:41,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=325, Invalid=797, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:18:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18256 states. [2020-12-22 08:18:43,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18256 to 8445. [2020-12-22 08:18:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8445 states. [2020-12-22 08:18:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8445 states to 8445 states and 12039 transitions. [2020-12-22 08:18:43,406 INFO L78 Accepts]: Start accepts. Automaton has 8445 states and 12039 transitions. Word has length 58 [2020-12-22 08:18:43,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:43,407 INFO L481 AbstractCegarLoop]: Abstraction has 8445 states and 12039 transitions. [2020-12-22 08:18:43,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:18:43,407 INFO L276 IsEmpty]: Start isEmpty. Operand 8445 states and 12039 transitions. [2020-12-22 08:18:43,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:18:43,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:43,409 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 08:18:43,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:18:43,409 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 08:18:43,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:43,410 INFO L82 PathProgramCache]: Analyzing trace with hash -386654778, now seen corresponding path program 1 times [2020-12-22 08:18:43,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:43,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98622447] [2020-12-22 08:18:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:43,484 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 08:18:43,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98622447] [2020-12-22 08:18:43,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:43,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:43,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446418526] [2020-12-22 08:18:43,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:43,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:43,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:43,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:43,487 INFO L87 Difference]: Start difference. First operand 8445 states and 12039 transitions. Second operand 3 states. [2020-12-22 08:18:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:46,579 INFO L93 Difference]: Finished difference Result 21917 states and 31391 transitions. [2020-12-22 08:18:46,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:46,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 08:18:46,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:46,602 INFO L225 Difference]: With dead ends: 21917 [2020-12-22 08:18:46,603 INFO L226 Difference]: Without dead ends: 14187 [2020-12-22 08:18:46,615 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 08:18:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14187 states. [2020-12-22 08:18:49,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14187 to 14185. [2020-12-22 08:18:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14185 states. [2020-12-22 08:18:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14185 states to 14185 states and 19958 transitions. [2020-12-22 08:18:49,771 INFO L78 Accepts]: Start accepts. Automaton has 14185 states and 19958 transitions. Word has length 61 [2020-12-22 08:18:49,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:49,772 INFO L481 AbstractCegarLoop]: Abstraction has 14185 states and 19958 transitions. [2020-12-22 08:18:49,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:49,772 INFO L276 IsEmpty]: Start isEmpty. Operand 14185 states and 19958 transitions. [2020-12-22 08:18:49,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:18:49,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:49,774 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] [2020-12-22 08:18:49,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:18:49,774 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 08:18:49,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:49,775 INFO L82 PathProgramCache]: Analyzing trace with hash 633580297, now seen corresponding path program 1 times [2020-12-22 08:18:49,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:49,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116805665] [2020-12-22 08:18:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:49,860 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 08:18:49,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116805665] [2020-12-22 08:18:49,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:49,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:18:49,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306316874] [2020-12-22 08:18:49,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:18:49,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:49,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:18:49,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:18:49,863 INFO L87 Difference]: Start difference. First operand 14185 states and 19958 transitions. Second operand 5 states. [2020-12-22 08:18:53,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:53,132 INFO L93 Difference]: Finished difference Result 23975 states and 33776 transitions. [2020-12-22 08:18:53,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:18:53,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-12-22 08:18:53,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:53,142 INFO L225 Difference]: With dead ends: 23975 [2020-12-22 08:18:53,143 INFO L226 Difference]: Without dead ends: 10473 [2020-12-22 08:18:53,154 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 08:18:53,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10473 states. [2020-12-22 08:18:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10473 to 10469. [2020-12-22 08:18:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10469 states. [2020-12-22 08:18:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10469 states to 10469 states and 14579 transitions. [2020-12-22 08:18:55,947 INFO L78 Accepts]: Start accepts. Automaton has 10469 states and 14579 transitions. Word has length 62 [2020-12-22 08:18:55,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:55,947 INFO L481 AbstractCegarLoop]: Abstraction has 10469 states and 14579 transitions. [2020-12-22 08:18:55,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:18:55,947 INFO L276 IsEmpty]: Start isEmpty. Operand 10469 states and 14579 transitions. [2020-12-22 08:18:55,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:18:55,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:55,950 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] [2020-12-22 08:18:55,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:18:55,950 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 08:18:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:55,951 INFO L82 PathProgramCache]: Analyzing trace with hash 480339852, now seen corresponding path program 1 times [2020-12-22 08:18:55,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:55,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603932582] [2020-12-22 08:18:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:56,018 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 08:18:56,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603932582] [2020-12-22 08:18:56,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:56,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:56,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056444151] [2020-12-22 08:18:56,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:56,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:56,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:56,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:56,021 INFO L87 Difference]: Start difference. First operand 10469 states and 14579 transitions. Second operand 3 states. [2020-12-22 08:19:00,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:00,888 INFO L93 Difference]: Finished difference Result 28229 states and 39462 transitions. [2020-12-22 08:19:00,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:00,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:19:00,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:00,908 INFO L225 Difference]: With dead ends: 28229 [2020-12-22 08:19:00,908 INFO L226 Difference]: Without dead ends: 18443 [2020-12-22 08:19:00,918 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 08:19:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18443 states. [2020-12-22 08:19:05,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18443 to 17331. [2020-12-22 08:19:05,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17331 states. [2020-12-22 08:19:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17331 states to 17331 states and 23973 transitions. [2020-12-22 08:19:05,536 INFO L78 Accepts]: Start accepts. Automaton has 17331 states and 23973 transitions. Word has length 66 [2020-12-22 08:19:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:05,536 INFO L481 AbstractCegarLoop]: Abstraction has 17331 states and 23973 transitions. [2020-12-22 08:19:05,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 17331 states and 23973 transitions. [2020-12-22 08:19:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:19:05,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:05,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:05,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:19:05,538 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 08:19:05,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:05,539 INFO L82 PathProgramCache]: Analyzing trace with hash -877917453, now seen corresponding path program 1 times [2020-12-22 08:19:05,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:05,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944002687] [2020-12-22 08:19:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:05,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944002687] [2020-12-22 08:19:05,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:05,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:19:05,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91980236] [2020-12-22 08:19:05,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:19:05,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:05,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:19:05,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:19:05,646 INFO L87 Difference]: Start difference. First operand 17331 states and 23973 transitions. Second operand 6 states. [2020-12-22 08:19:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:15,357 INFO L93 Difference]: Finished difference Result 31785 states and 43332 transitions. [2020-12-22 08:19:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:19:15,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-12-22 08:19:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:15,393 INFO L225 Difference]: With dead ends: 31785 [2020-12-22 08:19:15,393 INFO L226 Difference]: Without dead ends: 31783 [2020-12-22 08:19:15,400 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 08:19:15,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31783 states. [2020-12-22 08:19:20,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31783 to 18018. [2020-12-22 08:19:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18018 states. [2020-12-22 08:19:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18018 states to 18018 states and 24660 transitions. [2020-12-22 08:19:20,755 INFO L78 Accepts]: Start accepts. Automaton has 18018 states and 24660 transitions. Word has length 69 [2020-12-22 08:19:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:20,755 INFO L481 AbstractCegarLoop]: Abstraction has 18018 states and 24660 transitions. [2020-12-22 08:19:20,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:19:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 18018 states and 24660 transitions. [2020-12-22 08:19:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:19:20,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:20,758 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] [2020-12-22 08:19:20,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:19:20,758 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 08:19:20,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:20,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1274758828, now seen corresponding path program 1 times [2020-12-22 08:19:20,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:20,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116363472] [2020-12-22 08:19:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:20,814 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 08:19:20,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116363472] [2020-12-22 08:19:20,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:20,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:20,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210736676] [2020-12-22 08:19:20,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:20,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:20,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:20,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:20,816 INFO L87 Difference]: Start difference. First operand 18018 states and 24660 transitions. Second operand 3 states. [2020-12-22 08:19:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:30,530 INFO L93 Difference]: Finished difference Result 48499 states and 66139 transitions. [2020-12-22 08:19:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:30,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 08:19:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:30,571 INFO L225 Difference]: With dead ends: 48499 [2020-12-22 08:19:30,571 INFO L226 Difference]: Without dead ends: 31164 [2020-12-22 08:19:30,590 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 08:19:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31164 states. [2020-12-22 08:19:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31164 to 31162. [2020-12-22 08:19:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31162 states. [2020-12-22 08:19:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31162 states to 31162 states and 42012 transitions. [2020-12-22 08:19:39,996 INFO L78 Accepts]: Start accepts. Automaton has 31162 states and 42012 transitions. Word has length 70 [2020-12-22 08:19:39,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:39,996 INFO L481 AbstractCegarLoop]: Abstraction has 31162 states and 42012 transitions. [2020-12-22 08:19:39,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 31162 states and 42012 transitions. [2020-12-22 08:19:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:19:39,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:39,999 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] [2020-12-22 08:19:39,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:19:39,999 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 08:19:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:40,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1813757315, now seen corresponding path program 1 times [2020-12-22 08:19:40,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:40,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622246752] [2020-12-22 08:19:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:40,067 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 08:19:40,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622246752] [2020-12-22 08:19:40,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:40,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:40,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966922797] [2020-12-22 08:19:40,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:40,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:40,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:40,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:40,070 INFO L87 Difference]: Start difference. First operand 31162 states and 42012 transitions. Second operand 3 states. [2020-12-22 08:19:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:50,093 INFO L93 Difference]: Finished difference Result 38674 states and 52052 transitions. [2020-12-22 08:19:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:50,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:19:50,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:50,141 INFO L225 Difference]: With dead ends: 38674 [2020-12-22 08:19:50,141 INFO L226 Difference]: Without dead ends: 31164 [2020-12-22 08:19:50,154 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 08:19:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31164 states. [2020-12-22 08:19:58,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31164 to 25268. [2020-12-22 08:19:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25268 states. [2020-12-22 08:19:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25268 states to 25268 states and 33608 transitions. [2020-12-22 08:19:58,768 INFO L78 Accepts]: Start accepts. Automaton has 25268 states and 33608 transitions. Word has length 73 [2020-12-22 08:19:58,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:58,769 INFO L481 AbstractCegarLoop]: Abstraction has 25268 states and 33608 transitions. [2020-12-22 08:19:58,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:58,769 INFO L276 IsEmpty]: Start isEmpty. Operand 25268 states and 33608 transitions. [2020-12-22 08:19:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:19:58,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:58,772 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] [2020-12-22 08:19:58,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:19:58,772 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 08:19:58,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:58,773 INFO L82 PathProgramCache]: Analyzing trace with hash -711762074, now seen corresponding path program 1 times [2020-12-22 08:19:58,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:58,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931229075] [2020-12-22 08:19:58,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:58,842 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 08:19:58,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931229075] [2020-12-22 08:19:58,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:58,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:19:58,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923123946] [2020-12-22 08:19:58,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:19:58,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:58,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:19:58,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:19:58,844 INFO L87 Difference]: Start difference. First operand 25268 states and 33608 transitions. Second operand 5 states. [2020-12-22 08:20:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:19,436 INFO L93 Difference]: Finished difference Result 75983 states and 100103 transitions. [2020-12-22 08:20:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:20:19,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-12-22 08:20:19,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:19,531 INFO L225 Difference]: With dead ends: 75983 [2020-12-22 08:20:19,531 INFO L226 Difference]: Without dead ends: 51368 [2020-12-22 08:20:19,561 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 08:20:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51368 states. [2020-12-22 08:20:30,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51368 to 29640. [2020-12-22 08:20:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29640 states. [2020-12-22 08:20:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29640 states to 29640 states and 38370 transitions. [2020-12-22 08:20:30,413 INFO L78 Accepts]: Start accepts. Automaton has 29640 states and 38370 transitions. Word has length 74 [2020-12-22 08:20:30,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:30,414 INFO L481 AbstractCegarLoop]: Abstraction has 29640 states and 38370 transitions. [2020-12-22 08:20:30,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:20:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 29640 states and 38370 transitions. [2020-12-22 08:20:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:20:30,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:30,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:30,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:20:30,419 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 08:20:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:30,420 INFO L82 PathProgramCache]: Analyzing trace with hash -300132612, now seen corresponding path program 1 times [2020-12-22 08:20:30,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:30,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076654046] [2020-12-22 08:20:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:30,593 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 08:20:30,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076654046] [2020-12-22 08:20:30,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:30,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:20:30,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80697616] [2020-12-22 08:20:30,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:20:30,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:30,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:20:30,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:20:30,596 INFO L87 Difference]: Start difference. First operand 29640 states and 38370 transitions. Second operand 6 states. [2020-12-22 08:20:53,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:53,127 INFO L93 Difference]: Finished difference Result 89578 states and 116325 transitions. [2020-12-22 08:20:53,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:20:53,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-22 08:20:53,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:53,209 INFO L225 Difference]: With dead ends: 89578 [2020-12-22 08:20:53,209 INFO L226 Difference]: Without dead ends: 63875 [2020-12-22 08:20:53,239 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 08:20:53,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63875 states.