/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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:23:39,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:23:39,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:23:39,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:23:39,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:23:39,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:23:39,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:23:39,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:23:39,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:23:39,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:23:39,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:23:39,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:23:39,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:23:39,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:23:39,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:23:39,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:23:39,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:23:39,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:23:39,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:23:39,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:23:39,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:23:39,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:23:39,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:23:39,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:23:39,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:23:39,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:23:39,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:23:39,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:23:39,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:23:39,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:23:39,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:23:39,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:23:39,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:23:39,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:23:39,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:23:39,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:23:39,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:23:39,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:23:39,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:23:40,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:23:40,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:23:40,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:23:40,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:23:40,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:23:40,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:23:40,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:23:40,043 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:23:40,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:23:40,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:23:40,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:23:40,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:23:40,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:23:40,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:23:40,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:23:40,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:23:40,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:23:40,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:23:40,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:23:40,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:23:40,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:23:40,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:23:40,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:23:40,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:23:40,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:23:40,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:23:40,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:23:40,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:23:40,047 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:23:40,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:23:40,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:23:40,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:23:40,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:23:40,451 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:23:40,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-12-22 08:23:40,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2455e7cb6/4a9579a28008471985fda7e57ae2448f/FLAGc4ca7216c [2020-12-22 08:23:41,597 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:23:41,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-12-22 08:23:41,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2455e7cb6/4a9579a28008471985fda7e57ae2448f/FLAGc4ca7216c [2020-12-22 08:23:42,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2455e7cb6/4a9579a28008471985fda7e57ae2448f [2020-12-22 08:23:42,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:23:42,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:23:42,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:23:42,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:23:42,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:23:42,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:23:42" (1/1) ... [2020-12-22 08:23:42,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f8a48d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:42, skipping insertion in model container [2020-12-22 08:23:42,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:23:42" (1/1) ... [2020-12-22 08:23:42,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:23:42,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:23:42,909 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[31644,31657] [2020-12-22 08:23:43,022 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[55398,55411] [2020-12-22 08:23:43,051 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[63968,63981] [2020-12-22 08:23:43,143 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[91371,91384] [2020-12-22 08:23:43,193 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[106453,106466] [2020-12-22 08:23:43,251 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[123559,123572] [2020-12-22 08:23:43,310 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[141357,141370] [2020-12-22 08:23:43,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:23:43,584 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:23:43,723 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[31644,31657] [2020-12-22 08:23:43,790 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[55398,55411] [2020-12-22 08:23:43,813 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[63968,63981] [2020-12-22 08:23:43,875 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[91371,91384] [2020-12-22 08:23:43,910 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[106453,106466] [2020-12-22 08:23:43,986 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[123559,123572] [2020-12-22 08:23:44,027 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.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[141357,141370] [2020-12-22 08:23:44,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:23:44,243 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:23:44,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44 WrapperNode [2020-12-22 08:23:44,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:23:44,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:23:44,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:23:44,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:23:44,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (1/1) ... [2020-12-22 08:23:44,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (1/1) ... [2020-12-22 08:23:44,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:23:44,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:23:44,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:23:44,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:23:44,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (1/1) ... [2020-12-22 08:23:44,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (1/1) ... [2020-12-22 08:23:44,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (1/1) ... [2020-12-22 08:23:44,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (1/1) ... [2020-12-22 08:23:44,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (1/1) ... [2020-12-22 08:23:44,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (1/1) ... [2020-12-22 08:23:44,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (1/1) ... [2020-12-22 08:23:44,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:23:44,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:23:44,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:23:44,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:23:44,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (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 08:23:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:23:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:23:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:23:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:23:50,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:23:50,774 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:23:50,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:23:50 BoogieIcfgContainer [2020-12-22 08:23:50,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:23:50,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:23:50,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:23:50,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:23:50,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:23:42" (1/3) ... [2020-12-22 08:23:50,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7666885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:23:50, skipping insertion in model container [2020-12-22 08:23:50,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:44" (2/3) ... [2020-12-22 08:23:50,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7666885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:23:50, skipping insertion in model container [2020-12-22 08:23:50,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:23:50" (3/3) ... [2020-12-22 08:23:50,787 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-12-22 08:23:50,794 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:23:50,800 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 08:23:50,819 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 08:23:50,857 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:23:50,857 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:23:50,857 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:23:50,857 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:23:50,858 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:23:50,858 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:23:50,858 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:23:50,858 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:23:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states. [2020-12-22 08:23:50,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:23:50,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:50,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:50,959 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:50,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1414704703, now seen corresponding path program 1 times [2020-12-22 08:23:50,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:50,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913163814] [2020-12-22 08:23:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:51,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913163814] [2020-12-22 08:23:51,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:51,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:23:51,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733920196] [2020-12-22 08:23:51,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:23:51,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:51,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:23:51,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:23:51,528 INFO L87 Difference]: Start difference. First operand 2046 states. Second operand 5 states. [2020-12-22 08:23:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:54,901 INFO L93 Difference]: Finished difference Result 4026 states and 7029 transitions. [2020-12-22 08:23:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:23:54,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-12-22 08:23:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:54,982 INFO L225 Difference]: With dead ends: 4026 [2020-12-22 08:23:54,983 INFO L226 Difference]: Without dead ends: 2682 [2020-12-22 08:23:54,998 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 08:23:55,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2020-12-22 08:23:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2676. [2020-12-22 08:23:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2676 states. [2020-12-22 08:23:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 3473 transitions. [2020-12-22 08:23:55,230 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 3473 transitions. Word has length 65 [2020-12-22 08:23:55,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:55,232 INFO L481 AbstractCegarLoop]: Abstraction has 2676 states and 3473 transitions. [2020-12-22 08:23:55,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:23:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 3473 transitions. [2020-12-22 08:23:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:23:55,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:55,244 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 08:23:55,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:23:55,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:55,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:55,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1637494150, now seen corresponding path program 1 times [2020-12-22 08:23:55,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:55,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161146246] [2020-12-22 08:23:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:55,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161146246] [2020-12-22 08:23:55,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:55,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:23:55,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580214283] [2020-12-22 08:23:55,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:23:55,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:55,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:23:55,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:55,483 INFO L87 Difference]: Start difference. First operand 2676 states and 3473 transitions. Second operand 6 states. [2020-12-22 08:23:57,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:57,835 INFO L93 Difference]: Finished difference Result 4911 states and 6416 transitions. [2020-12-22 08:23:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:23:57,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:23:57,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:57,855 INFO L225 Difference]: With dead ends: 4911 [2020-12-22 08:23:57,855 INFO L226 Difference]: Without dead ends: 3331 [2020-12-22 08:23:57,860 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 08:23:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3331 states. [2020-12-22 08:23:57,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3331 to 3312. [2020-12-22 08:23:57,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2020-12-22 08:23:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4355 transitions. [2020-12-22 08:23:58,009 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4355 transitions. Word has length 66 [2020-12-22 08:23:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:58,010 INFO L481 AbstractCegarLoop]: Abstraction has 3312 states and 4355 transitions. [2020-12-22 08:23:58,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:23:58,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4355 transitions. [2020-12-22 08:23:58,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:23:58,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:58,017 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 08:23:58,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:23:58,018 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:58,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:58,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1316871796, now seen corresponding path program 1 times [2020-12-22 08:23:58,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:58,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670943611] [2020-12-22 08:23:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:58,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670943611] [2020-12-22 08:23:58,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:58,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:23:58,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487945960] [2020-12-22 08:23:58,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:23:58,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:23:58,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:58,161 INFO L87 Difference]: Start difference. First operand 3312 states and 4355 transitions. Second operand 6 states. [2020-12-22 08:24:00,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:00,540 INFO L93 Difference]: Finished difference Result 8089 states and 10663 transitions. [2020-12-22 08:24:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:24:00,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:24:00,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:00,569 INFO L225 Difference]: With dead ends: 8089 [2020-12-22 08:24:00,569 INFO L226 Difference]: Without dead ends: 5655 [2020-12-22 08:24:00,575 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 08:24:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2020-12-22 08:24:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 5628. [2020-12-22 08:24:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5628 states. [2020-12-22 08:24:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 7326 transitions. [2020-12-22 08:24:00,845 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 7326 transitions. Word has length 66 [2020-12-22 08:24:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:00,845 INFO L481 AbstractCegarLoop]: Abstraction has 5628 states and 7326 transitions. [2020-12-22 08:24:00,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:24:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 7326 transitions. [2020-12-22 08:24:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:24:00,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:00,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:24:00,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:24:00,854 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:00,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:00,855 INFO L82 PathProgramCache]: Analyzing trace with hash -247743443, now seen corresponding path program 1 times [2020-12-22 08:24:00,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:00,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619034922] [2020-12-22 08:24:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:01,155 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 08:24:01,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619034922] [2020-12-22 08:24:01,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:01,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:24:01,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270099015] [2020-12-22 08:24:01,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:24:01,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:01,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:24:01,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:24:01,158 INFO L87 Difference]: Start difference. First operand 5628 states and 7326 transitions. Second operand 10 states. [2020-12-22 08:24:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:09,694 INFO L93 Difference]: Finished difference Result 15862 states and 22672 transitions. [2020-12-22 08:24:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:24:09,695 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-12-22 08:24:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:09,763 INFO L225 Difference]: With dead ends: 15862 [2020-12-22 08:24:09,763 INFO L226 Difference]: Without dead ends: 14246 [2020-12-22 08:24:09,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=374, Invalid=1108, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:24:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14246 states. [2020-12-22 08:24:10,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14246 to 5635. [2020-12-22 08:24:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5635 states. [2020-12-22 08:24:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5635 states to 5635 states and 7333 transitions. [2020-12-22 08:24:10,194 INFO L78 Accepts]: Start accepts. Automaton has 5635 states and 7333 transitions. Word has length 67 [2020-12-22 08:24:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:10,194 INFO L481 AbstractCegarLoop]: Abstraction has 5635 states and 7333 transitions. [2020-12-22 08:24:10,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:24:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5635 states and 7333 transitions. [2020-12-22 08:24:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:24:10,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:10,203 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] [2020-12-22 08:24:10,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:24:10,203 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:10,204 INFO L82 PathProgramCache]: Analyzing trace with hash 278824295, now seen corresponding path program 1 times [2020-12-22 08:24:10,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:10,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057076244] [2020-12-22 08:24:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:10,312 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 08:24:10,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057076244] [2020-12-22 08:24:10,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:10,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:24:10,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524085387] [2020-12-22 08:24:10,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:24:10,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:10,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:24:10,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:24:10,315 INFO L87 Difference]: Start difference. First operand 5635 states and 7333 transitions. Second operand 6 states. [2020-12-22 08:24:12,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:12,980 INFO L93 Difference]: Finished difference Result 13967 states and 18587 transitions. [2020-12-22 08:24:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:24:12,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-22 08:24:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:13,005 INFO L225 Difference]: With dead ends: 13967 [2020-12-22 08:24:13,005 INFO L226 Difference]: Without dead ends: 10367 [2020-12-22 08:24:13,015 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 08:24:13,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10367 states. [2020-12-22 08:24:13,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10367 to 10355. [2020-12-22 08:24:13,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10355 states. [2020-12-22 08:24:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10355 states to 10355 states and 13712 transitions. [2020-12-22 08:24:13,797 INFO L78 Accepts]: Start accepts. Automaton has 10355 states and 13712 transitions. Word has length 68 [2020-12-22 08:24:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:13,798 INFO L481 AbstractCegarLoop]: Abstraction has 10355 states and 13712 transitions. [2020-12-22 08:24:13,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:24:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 10355 states and 13712 transitions. [2020-12-22 08:24:13,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:24:13,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:13,807 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] [2020-12-22 08:24:13,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:24:13,808 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:13,809 INFO L82 PathProgramCache]: Analyzing trace with hash -775523704, now seen corresponding path program 1 times [2020-12-22 08:24:13,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:13,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666356785] [2020-12-22 08:24:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:14,091 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 08:24:14,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666356785] [2020-12-22 08:24:14,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:14,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:24:14,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852118751] [2020-12-22 08:24:14,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:24:14,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:14,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:24:14,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:24:14,094 INFO L87 Difference]: Start difference. First operand 10355 states and 13712 transitions. Second operand 9 states. [2020-12-22 08:24:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:19,215 INFO L93 Difference]: Finished difference Result 15716 states and 21736 transitions. [2020-12-22 08:24:19,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:24:19,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-12-22 08:24:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:19,254 INFO L225 Difference]: With dead ends: 15716 [2020-12-22 08:24:19,254 INFO L226 Difference]: Without dead ends: 15710 [2020-12-22 08:24:19,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:24:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15710 states. [2020-12-22 08:24:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15710 to 10355. [2020-12-22 08:24:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10355 states. [2020-12-22 08:24:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10355 states to 10355 states and 13711 transitions. [2020-12-22 08:24:19,927 INFO L78 Accepts]: Start accepts. Automaton has 10355 states and 13711 transitions. Word has length 68 [2020-12-22 08:24:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:19,928 INFO L481 AbstractCegarLoop]: Abstraction has 10355 states and 13711 transitions. [2020-12-22 08:24:19,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:24:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 10355 states and 13711 transitions. [2020-12-22 08:24:19,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:24:19,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:19,943 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] [2020-12-22 08:24:19,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:24:19,943 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:19,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:19,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1144324393, now seen corresponding path program 1 times [2020-12-22 08:24:19,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:19,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497979916] [2020-12-22 08:24:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:20,713 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 08:24:20,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497979916] [2020-12-22 08:24:20,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:20,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:24:20,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858951658] [2020-12-22 08:24:20,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:24:20,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:20,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:24:20,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:24:20,717 INFO L87 Difference]: Start difference. First operand 10355 states and 13711 transitions. Second operand 12 states. [2020-12-22 08:24:27,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:27,390 INFO L93 Difference]: Finished difference Result 42288 states and 61792 transitions. [2020-12-22 08:24:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:24:27,391 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-12-22 08:24:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:27,496 INFO L225 Difference]: With dead ends: 42288 [2020-12-22 08:24:27,496 INFO L226 Difference]: Without dead ends: 42284 [2020-12-22 08:24:27,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:24:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42284 states. [2020-12-22 08:24:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42284 to 10351. [2020-12-22 08:24:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10351 states. [2020-12-22 08:24:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10351 states to 10351 states and 13706 transitions. [2020-12-22 08:24:28,851 INFO L78 Accepts]: Start accepts. Automaton has 10351 states and 13706 transitions. Word has length 68 [2020-12-22 08:24:28,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:28,851 INFO L481 AbstractCegarLoop]: Abstraction has 10351 states and 13706 transitions. [2020-12-22 08:24:28,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:24:28,852 INFO L276 IsEmpty]: Start isEmpty. Operand 10351 states and 13706 transitions. [2020-12-22 08:24:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:24:28,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:28,860 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 08:24:28,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:24:28,860 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:28,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1153297775, now seen corresponding path program 1 times [2020-12-22 08:24:28,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:28,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58489750] [2020-12-22 08:24:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:29,096 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 08:24:29,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58489750] [2020-12-22 08:24:29,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:29,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:24:29,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811239518] [2020-12-22 08:24:29,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:24:29,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:29,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:24:29,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:24:29,099 INFO L87 Difference]: Start difference. First operand 10351 states and 13706 transitions. Second operand 10 states. [2020-12-22 08:24:39,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:39,041 INFO L93 Difference]: Finished difference Result 36672 states and 52472 transitions. [2020-12-22 08:24:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:24:39,042 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-12-22 08:24:39,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:39,111 INFO L225 Difference]: With dead ends: 36672 [2020-12-22 08:24:39,111 INFO L226 Difference]: Without dead ends: 32642 [2020-12-22 08:24:39,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:24:39,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32642 states. [2020-12-22 08:24:40,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32642 to 10323. [2020-12-22 08:24:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10323 states. [2020-12-22 08:24:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10323 states to 10323 states and 13673 transitions. [2020-12-22 08:24:40,396 INFO L78 Accepts]: Start accepts. Automaton has 10323 states and 13673 transitions. Word has length 69 [2020-12-22 08:24:40,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:40,396 INFO L481 AbstractCegarLoop]: Abstraction has 10323 states and 13673 transitions. [2020-12-22 08:24:40,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:24:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 10323 states and 13673 transitions. [2020-12-22 08:24:40,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:24:40,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:40,405 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 08:24:40,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:24:40,405 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:40,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:40,406 INFO L82 PathProgramCache]: Analyzing trace with hash -770034975, now seen corresponding path program 1 times [2020-12-22 08:24:40,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:40,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539659266] [2020-12-22 08:24:40,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:40,767 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 08:24:40,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539659266] [2020-12-22 08:24:40,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:40,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:24:40,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513658116] [2020-12-22 08:24:40,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:24:40,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:40,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:24:40,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:24:40,770 INFO L87 Difference]: Start difference. First operand 10323 states and 13673 transitions. Second operand 12 states. [2020-12-22 08:24:41,124 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-22 08:24:41,287 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:24:41,492 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:24:41,856 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:24:42,267 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:24:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:48,341 INFO L93 Difference]: Finished difference Result 35959 states and 51722 transitions. [2020-12-22 08:24:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:24:48,342 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-12-22 08:24:48,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:48,398 INFO L225 Difference]: With dead ends: 35959 [2020-12-22 08:24:48,398 INFO L226 Difference]: Without dead ends: 31894 [2020-12-22 08:24:48,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:24:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31894 states. [2020-12-22 08:24:50,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31894 to 10256. [2020-12-22 08:24:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10256 states. [2020-12-22 08:24:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10256 states to 10256 states and 13599 transitions. [2020-12-22 08:24:50,108 INFO L78 Accepts]: Start accepts. Automaton has 10256 states and 13599 transitions. Word has length 69 [2020-12-22 08:24:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:50,108 INFO L481 AbstractCegarLoop]: Abstraction has 10256 states and 13599 transitions. [2020-12-22 08:24:50,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:24:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 10256 states and 13599 transitions. [2020-12-22 08:24:50,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:24:50,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:50,117 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 08:24:50,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:24:50,117 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:50,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:50,118 INFO L82 PathProgramCache]: Analyzing trace with hash -391190939, now seen corresponding path program 1 times [2020-12-22 08:24:50,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:50,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222941605] [2020-12-22 08:24:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:50,752 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 08:24:50,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222941605] [2020-12-22 08:24:50,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:50,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:24:50,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862672080] [2020-12-22 08:24:50,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:24:50,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:50,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:24:50,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:24:50,756 INFO L87 Difference]: Start difference. First operand 10256 states and 13599 transitions. Second operand 13 states. [2020-12-22 08:24:51,332 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 08:24:51,988 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 08:24:52,380 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-12-22 08:24:52,891 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-12-22 08:24:53,569 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-12-22 08:24:54,015 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 08:24:54,319 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 08:24:55,024 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-12-22 08:24:55,412 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 08:24:56,052 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-12-22 08:24:56,439 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-12-22 08:24:59,083 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-22 08:25:00,264 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-12-22 08:25:03,931 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-22 08:25:05,148 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-12-22 08:25:08,545 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-22 08:25:09,012 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-22 08:25:10,251 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 08:25:10,651 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-22 08:25:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:16,611 INFO L93 Difference]: Finished difference Result 74594 states and 110280 transitions. [2020-12-22 08:25:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:25:16,612 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 70 [2020-12-22 08:25:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:16,707 INFO L225 Difference]: With dead ends: 74594 [2020-12-22 08:25:16,707 INFO L226 Difference]: Without dead ends: 70561 [2020-12-22 08:25:16,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=433, Invalid=1289, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:25:16,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70561 states. [2020-12-22 08:25:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70561 to 10266. [2020-12-22 08:25:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10266 states. [2020-12-22 08:25:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10266 states to 10266 states and 13612 transitions. [2020-12-22 08:25:19,147 INFO L78 Accepts]: Start accepts. Automaton has 10266 states and 13612 transitions. Word has length 70 [2020-12-22 08:25:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:19,147 INFO L481 AbstractCegarLoop]: Abstraction has 10266 states and 13612 transitions. [2020-12-22 08:25:19,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:25:19,147 INFO L276 IsEmpty]: Start isEmpty. Operand 10266 states and 13612 transitions. [2020-12-22 08:25:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:25:19,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:19,154 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] [2020-12-22 08:25:19,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:25:19,154 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:19,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:19,155 INFO L82 PathProgramCache]: Analyzing trace with hash 557449094, now seen corresponding path program 1 times [2020-12-22 08:25:19,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:19,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782924556] [2020-12-22 08:25:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:19,238 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 08:25:19,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782924556] [2020-12-22 08:25:19,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:19,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:25:19,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269537584] [2020-12-22 08:25:19,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:25:19,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:19,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:25:19,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:19,241 INFO L87 Difference]: Start difference. First operand 10266 states and 13612 transitions. Second operand 3 states. [2020-12-22 08:25:22,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:22,476 INFO L93 Difference]: Finished difference Result 21338 states and 29026 transitions. [2020-12-22 08:25:22,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:25:22,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 08:25:22,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:22,496 INFO L225 Difference]: With dead ends: 21338 [2020-12-22 08:25:22,496 INFO L226 Difference]: Without dead ends: 12563 [2020-12-22 08:25:22,508 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 08:25:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12563 states. [2020-12-22 08:25:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12563 to 12552. [2020-12-22 08:25:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12552 states. [2020-12-22 08:25:25,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 17107 transitions. [2020-12-22 08:25:25,262 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 17107 transitions. Word has length 71 [2020-12-22 08:25:25,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:25,262 INFO L481 AbstractCegarLoop]: Abstraction has 12552 states and 17107 transitions. [2020-12-22 08:25:25,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:25:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 17107 transitions. [2020-12-22 08:25:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:25:25,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:25,268 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] [2020-12-22 08:25:25,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:25:25,268 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:25,269 INFO L82 PathProgramCache]: Analyzing trace with hash -310200981, now seen corresponding path program 1 times [2020-12-22 08:25:25,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:25,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052024350] [2020-12-22 08:25:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:25,325 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 08:25:25,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052024350] [2020-12-22 08:25:25,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:25,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:25:25,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128025893] [2020-12-22 08:25:25,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:25:25,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:25,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:25:25,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:25,327 INFO L87 Difference]: Start difference. First operand 12552 states and 17107 transitions. Second operand 3 states. [2020-12-22 08:25:29,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:29,366 INFO L93 Difference]: Finished difference Result 23999 states and 34135 transitions. [2020-12-22 08:25:29,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:25:29,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 08:25:29,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:29,382 INFO L225 Difference]: With dead ends: 23999 [2020-12-22 08:25:29,382 INFO L226 Difference]: Without dead ends: 14952 [2020-12-22 08:25:29,395 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 08:25:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14952 states. [2020-12-22 08:25:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14952 to 14939. [2020-12-22 08:25:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14939 states. [2020-12-22 08:25:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14939 states to 14939 states and 21190 transitions. [2020-12-22 08:25:33,139 INFO L78 Accepts]: Start accepts. Automaton has 14939 states and 21190 transitions. Word has length 71 [2020-12-22 08:25:33,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:33,139 INFO L481 AbstractCegarLoop]: Abstraction has 14939 states and 21190 transitions. [2020-12-22 08:25:33,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:25:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 14939 states and 21190 transitions. [2020-12-22 08:25:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:25:33,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:33,144 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] [2020-12-22 08:25:33,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:25:33,145 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:33,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:33,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1163193954, now seen corresponding path program 1 times [2020-12-22 08:25:33,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:33,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376024174] [2020-12-22 08:25:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:33,348 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 08:25:33,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376024174] [2020-12-22 08:25:33,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:33,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:25:33,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028035989] [2020-12-22 08:25:33,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:25:33,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:33,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:25:33,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:25:33,351 INFO L87 Difference]: Start difference. First operand 14939 states and 21190 transitions. Second operand 9 states. [2020-12-22 08:25:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:46,449 INFO L93 Difference]: Finished difference Result 32755 states and 47482 transitions. [2020-12-22 08:25:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:25:46,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-12-22 08:25:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:46,481 INFO L225 Difference]: With dead ends: 32755 [2020-12-22 08:25:46,482 INFO L226 Difference]: Without dead ends: 32746 [2020-12-22 08:25:46,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:25:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32746 states. [2020-12-22 08:25:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32746 to 14939. [2020-12-22 08:25:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14939 states. [2020-12-22 08:25:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14939 states to 14939 states and 21189 transitions. [2020-12-22 08:25:50,318 INFO L78 Accepts]: Start accepts. Automaton has 14939 states and 21189 transitions. Word has length 71 [2020-12-22 08:25:50,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:50,318 INFO L481 AbstractCegarLoop]: Abstraction has 14939 states and 21189 transitions. [2020-12-22 08:25:50,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:25:50,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14939 states and 21189 transitions. [2020-12-22 08:25:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:25:50,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:50,323 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] [2020-12-22 08:25:50,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:25:50,324 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:50,324 INFO L82 PathProgramCache]: Analyzing trace with hash -143931899, now seen corresponding path program 1 times [2020-12-22 08:25:50,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:50,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735979019] [2020-12-22 08:25:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:50,810 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 08:25:50,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735979019] [2020-12-22 08:25:50,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:50,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:25:50,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082237054] [2020-12-22 08:25:50,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:25:50,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:50,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:25:50,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:25:50,812 INFO L87 Difference]: Start difference. First operand 14939 states and 21189 transitions. Second operand 13 states. [2020-12-22 08:25:51,206 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-22 08:25:51,405 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:25:51,647 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:25:52,359 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:25:52,754 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:26:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:26:16,165 INFO L93 Difference]: Finished difference Result 70203 states and 103625 transitions. [2020-12-22 08:26:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 08:26:16,166 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-12-22 08:26:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:26:16,241 INFO L225 Difference]: With dead ends: 70203 [2020-12-22 08:26:16,241 INFO L226 Difference]: Without dead ends: 70191 [2020-12-22 08:26:16,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:26:16,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70191 states. [2020-12-22 08:26:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70191 to 14927. [2020-12-22 08:26:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14927 states. [2020-12-22 08:26:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14927 states to 14927 states and 21177 transitions. [2020-12-22 08:26:20,838 INFO L78 Accepts]: Start accepts. Automaton has 14927 states and 21177 transitions. Word has length 72 [2020-12-22 08:26:20,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:26:20,839 INFO L481 AbstractCegarLoop]: Abstraction has 14927 states and 21177 transitions. [2020-12-22 08:26:20,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:26:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 14927 states and 21177 transitions. [2020-12-22 08:26:20,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:26:20,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:26:20,844 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] [2020-12-22 08:26:20,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:26:20,845 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:26:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:26:20,845 INFO L82 PathProgramCache]: Analyzing trace with hash -694134672, now seen corresponding path program 1 times [2020-12-22 08:26:20,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:26:20,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414193918] [2020-12-22 08:26:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:26:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:26:21,122 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 08:26:21,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414193918] [2020-12-22 08:26:21,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:26:21,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:26:21,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756783141] [2020-12-22 08:26:21,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:26:21,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:26:21,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:26:21,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:26:21,128 INFO L87 Difference]: Start difference. First operand 14927 states and 21177 transitions. Second operand 10 states. [2020-12-22 08:26:28,843 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2020-12-22 08:26:44,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:26:44,348 INFO L93 Difference]: Finished difference Result 63013 states and 93081 transitions. [2020-12-22 08:26:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:26:44,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-12-22 08:26:44,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:26:44,416 INFO L225 Difference]: With dead ends: 63013 [2020-12-22 08:26:44,416 INFO L226 Difference]: Without dead ends: 51513 [2020-12-22 08:26:44,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:26:44,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51513 states. [2020-12-22 08:26:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51513 to 14927. [2020-12-22 08:26:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14927 states. [2020-12-22 08:26:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14927 states to 14927 states and 21176 transitions. [2020-12-22 08:26:49,453 INFO L78 Accepts]: Start accepts. Automaton has 14927 states and 21176 transitions. Word has length 72 [2020-12-22 08:26:49,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:26:49,454 INFO L481 AbstractCegarLoop]: Abstraction has 14927 states and 21176 transitions. [2020-12-22 08:26:49,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:26:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 14927 states and 21176 transitions. [2020-12-22 08:26:49,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:26:49,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:26:49,459 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 08:26:49,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:26:49,459 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:26:49,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:26:49,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1163331560, now seen corresponding path program 1 times [2020-12-22 08:26:49,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:26:49,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345303426] [2020-12-22 08:26:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:26:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:26:49,525 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 08:26:49,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345303426] [2020-12-22 08:26:49,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:26:49,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:26:49,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645686275] [2020-12-22 08:26:49,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:26:49,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:26:49,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:26:49,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:26:49,531 INFO L87 Difference]: Start difference. First operand 14927 states and 21176 transitions. Second operand 3 states. [2020-12-22 08:26:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:26:58,349 INFO L93 Difference]: Finished difference Result 35859 states and 52448 transitions. [2020-12-22 08:26:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:26:58,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:26:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:26:58,379 INFO L225 Difference]: With dead ends: 35859 [2020-12-22 08:26:58,379 INFO L226 Difference]: Without dead ends: 23869 [2020-12-22 08:26:58,394 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 08:26:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23869 states. [2020-12-22 08:27:06,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23869 to 23867. [2020-12-22 08:27:06,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23867 states. [2020-12-22 08:27:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23867 states to 23867 states and 34390 transitions. [2020-12-22 08:27:06,718 INFO L78 Accepts]: Start accepts. Automaton has 23867 states and 34390 transitions. Word has length 73 [2020-12-22 08:27:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:06,718 INFO L481 AbstractCegarLoop]: Abstraction has 23867 states and 34390 transitions. [2020-12-22 08:27:06,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand 23867 states and 34390 transitions. [2020-12-22 08:27:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:27:06,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:06,723 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 08:27:06,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:27:06,724 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:06,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:06,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1807483590, now seen corresponding path program 1 times [2020-12-22 08:27:06,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:06,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974657299] [2020-12-22 08:27:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:06,960 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 08:27:06,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974657299] [2020-12-22 08:27:06,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:06,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:27:06,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976405694] [2020-12-22 08:27:06,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:27:06,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:06,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:27:06,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:27:06,962 INFO L87 Difference]: Start difference. First operand 23867 states and 34390 transitions. Second operand 10 states. [2020-12-22 08:27:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:35,139 INFO L93 Difference]: Finished difference Result 63666 states and 92093 transitions. [2020-12-22 08:27:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:27:35,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-12-22 08:27:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:35,205 INFO L225 Difference]: With dead ends: 63666 [2020-12-22 08:27:35,205 INFO L226 Difference]: Without dead ends: 58145 [2020-12-22 08:27:35,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2020-12-22 08:27:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58145 states. [2020-12-22 08:27:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58145 to 23867. [2020-12-22 08:27:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23867 states. [2020-12-22 08:27:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23867 states to 23867 states and 34389 transitions. [2020-12-22 08:27:44,268 INFO L78 Accepts]: Start accepts. Automaton has 23867 states and 34389 transitions. Word has length 73 [2020-12-22 08:27:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:44,268 INFO L481 AbstractCegarLoop]: Abstraction has 23867 states and 34389 transitions. [2020-12-22 08:27:44,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:27:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 23867 states and 34389 transitions. [2020-12-22 08:27:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:27:44,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:44,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:27:44,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:27:44,273 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:44,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1528679865, now seen corresponding path program 1 times [2020-12-22 08:27:44,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:44,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265426683] [2020-12-22 08:27:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat