/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:36:38,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:36:38,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:36:38,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-03 17:36:38,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-03 17:36:38,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-03 17:36:38,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-03 17:36:38,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-03 17:36:38,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-03 17:36:38,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-03 17:36:38,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-03 17:36:38,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-03 17:36:38,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-03 17:36:38,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-03 17:36:38,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-03 17:36:38,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-03 17:36:38,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-03 17:36:38,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-03 17:36:38,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-03 17:36:38,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-03 17:36:38,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-03 17:36:38,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-03 17:36:38,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-03 17:36:38,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-03 17:36:38,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-03 17:36:38,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-03 17:36:38,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-03 17:36:38,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-03 17:36:38,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-03 17:36:38,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-03 17:36:38,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-03 17:36:38,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-03 17:36:38,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-03 17:36:38,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-03 17:36:38,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-03 17:36:38,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-03 17:36:38,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-03 17:36:38,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-03 17:36:38,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:36:38,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:36:38,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:36:38,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 17:36:38,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:36:38,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:36:38,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:36:38,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:36:38,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:36:38,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:36:38,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:36:38,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:36:38,939 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:36:38,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:36:38,940 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:36:38,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:36:38,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:36:38,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:36:38,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:36:38,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:36:38,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:36:38,940 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:36:38,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:36:38,941 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:36:38,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:36:38,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:36:38,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:36:38,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:36:38,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:36:38,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:36:38,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:36:38,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:36:38,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:36:38,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:36:38,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:36:38,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:36:38,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:36:38,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:36:39,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:36:39,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:36:39,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:36:39,164 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:36:39,164 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:36:39,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-03-03 17:36:39,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/465919cc5/2e8ae371825247b4baf39896d1eb34d9/FLAGba0318b72 [2022-03-03 17:36:39,629 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:36:39,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-03-03 17:36:39,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/465919cc5/2e8ae371825247b4baf39896d1eb34d9/FLAGba0318b72 [2022-03-03 17:36:39,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/465919cc5/2e8ae371825247b4baf39896d1eb34d9 [2022-03-03 17:36:39,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:36:39,658 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:36:39,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:36:39,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:36:39,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:36:39,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e97ba5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39, skipping insertion in model container [2022-03-03 17:36:39,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:36:39,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:36:39,838 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2022-03-03 17:36:39,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:36:39,847 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:36:39,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2022-03-03 17:36:39,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:36:39,871 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:36:39,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39 WrapperNode [2022-03-03 17:36:39,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:36:39,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:36:39,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:36:39,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:36:39,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,898 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-03-03 17:36:39,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:36:39,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:36:39,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:36:39,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:36:39,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:36:39,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:36:39,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:36:39,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:36:39,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (1/1) ... [2022-03-03 17:36:39,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:36:39,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:39,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 17:36:39,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 17:36:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:36:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:36:39,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:36:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:36:39,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:36:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:36:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:36:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:36:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:36:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:36:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:36:39,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:36:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:36:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:36:39,987 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:36:40,048 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:36:40,049 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:36:40,197 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:36:40,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:36:40,238 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-03 17:36:40,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:36:40 BoogieIcfgContainer [2022-03-03 17:36:40,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:36:40,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:36:40,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:36:40,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:36:40,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:36:39" (1/3) ... [2022-03-03 17:36:40,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a83341a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:36:40, skipping insertion in model container [2022-03-03 17:36:40,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:36:39" (2/3) ... [2022-03-03 17:36:40,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a83341a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:36:40, skipping insertion in model container [2022-03-03 17:36:40,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:36:40" (3/3) ... [2022-03-03 17:36:40,254 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2022-03-03 17:36:40,267 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:36:40,267 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:36:40,267 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:36:40,267 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:36:40,302 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,303 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,303 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,303 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,304 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,304 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,305 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,306 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,306 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,306 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,306 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,306 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,307 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,307 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,307 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,307 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,307 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,308 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,308 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,308 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,309 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,309 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,309 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,309 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,309 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,310 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,310 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,310 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,311 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,312 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,315 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,316 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:36:40,320 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:36:40,356 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:36:40,361 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:36:40,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:36:40,370 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 82 transitions, 180 flow [2022-03-03 17:36:40,438 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:40,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-03 17:36:40,455 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:40,456 INFO L514 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] [2022-03-03 17:36:40,459 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1376248037, now seen corresponding path program 1 times [2022-03-03 17:36:40,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:40,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069042060] [2022-03-03 17:36:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:40,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:40,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:40,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069042060] [2022-03-03 17:36:40,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069042060] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:36:40,700 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:36:40,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:36:40,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611966072] [2022-03-03 17:36:40,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:36:40,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:36:40,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:36:40,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:36:40,744 INFO L87 Difference]: Start difference. First operand has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:40,796 INFO L93 Difference]: Finished difference Result 328 states and 778 transitions. [2022-03-03 17:36:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:36:40,800 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-03-03 17:36:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:40,821 INFO L225 Difference]: With dead ends: 328 [2022-03-03 17:36:40,824 INFO L226 Difference]: Without dead ends: 326 [2022-03-03 17:36:40,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:36:40,830 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:40,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:36:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-03 17:36:40,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2022-03-03 17:36:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.3876923076923076) internal successors, (776), 325 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 776 transitions. [2022-03-03 17:36:40,898 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 776 transitions. Word has length 58 [2022-03-03 17:36:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:40,899 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 776 transitions. [2022-03-03 17:36:40,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 776 transitions. [2022-03-03 17:36:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-03 17:36:40,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:40,904 INFO L514 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] [2022-03-03 17:36:40,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:36:40,904 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:40,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1501901863, now seen corresponding path program 1 times [2022-03-03 17:36:40,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:40,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095036290] [2022-03-03 17:36:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:40,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:41,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:41,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095036290] [2022-03-03 17:36:41,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095036290] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:36:41,134 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:36:41,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:36:41,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684633361] [2022-03-03 17:36:41,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:36:41,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:36:41,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:36:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:36:41,137 INFO L87 Difference]: Start difference. First operand 326 states and 776 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:41,220 INFO L93 Difference]: Finished difference Result 446 states and 1088 transitions. [2022-03-03 17:36:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:36:41,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-03-03 17:36:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:41,225 INFO L225 Difference]: With dead ends: 446 [2022-03-03 17:36:41,225 INFO L226 Difference]: Without dead ends: 446 [2022-03-03 17:36:41,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:36:41,227 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 68 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:41,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 165 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:36:41,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-03-03 17:36:41,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 356. [2022-03-03 17:36:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.4056338028169013) internal successors, (854), 355 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 854 transitions. [2022-03-03 17:36:41,253 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 854 transitions. Word has length 58 [2022-03-03 17:36:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:41,253 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 854 transitions. [2022-03-03 17:36:41,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 854 transitions. [2022-03-03 17:36:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-03 17:36:41,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:41,258 INFO L514 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] [2022-03-03 17:36:41,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:36:41,259 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:41,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:41,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1550020423, now seen corresponding path program 1 times [2022-03-03 17:36:41,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:41,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012430490] [2022-03-03 17:36:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:41,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:41,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:41,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012430490] [2022-03-03 17:36:41,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012430490] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:41,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102614403] [2022-03-03 17:36:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:41,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:41,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:41,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:41,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:36:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:41,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-03 17:36:41,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:41,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:41,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102614403] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:41,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:41,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-03-03 17:36:41,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550135156] [2022-03-03 17:36:41,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:41,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 17:36:41,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:41,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 17:36:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:36:41,761 INFO L87 Difference]: Start difference. First operand 356 states and 854 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:41,957 INFO L93 Difference]: Finished difference Result 540 states and 1342 transitions. [2022-03-03 17:36:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:36:41,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-03-03 17:36:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:41,961 INFO L225 Difference]: With dead ends: 540 [2022-03-03 17:36:41,961 INFO L226 Difference]: Without dead ends: 540 [2022-03-03 17:36:41,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:36:41,965 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 121 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:41,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 540 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:36:41,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-03-03 17:36:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 391. [2022-03-03 17:36:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 2.4307692307692306) internal successors, (948), 390 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 948 transitions. [2022-03-03 17:36:41,989 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 948 transitions. Word has length 63 [2022-03-03 17:36:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:41,990 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 948 transitions. [2022-03-03 17:36:41,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 948 transitions. [2022-03-03 17:36:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-03 17:36:41,993 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:41,994 INFO L514 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] [2022-03-03 17:36:42,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-03 17:36:42,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:42,216 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:42,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2085302797, now seen corresponding path program 2 times [2022-03-03 17:36:42,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:42,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808257597] [2022-03-03 17:36:42,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:42,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:42,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:42,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808257597] [2022-03-03 17:36:42,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808257597] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:42,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195428608] [2022-03-03 17:36:42,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:36:42,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:42,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:42,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:42,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:36:42,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-03 17:36:42,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:42,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 17:36:42,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:36:42,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:36:42,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195428608] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:36:42,648 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:36:42,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-03-03 17:36:42,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552498609] [2022-03-03 17:36:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:36:42,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:36:42,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:36:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-03 17:36:42,650 INFO L87 Difference]: Start difference. First operand 391 states and 948 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:42,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:42,759 INFO L93 Difference]: Finished difference Result 477 states and 1180 transitions. [2022-03-03 17:36:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:36:42,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-03-03 17:36:42,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:42,763 INFO L225 Difference]: With dead ends: 477 [2022-03-03 17:36:42,763 INFO L226 Difference]: Without dead ends: 477 [2022-03-03 17:36:42,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:36:42,764 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 107 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:42,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 174 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:36:42,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-03-03 17:36:42,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 399. [2022-03-03 17:36:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 2.437185929648241) internal successors, (970), 398 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:42,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 970 transitions. [2022-03-03 17:36:42,774 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 970 transitions. Word has length 63 [2022-03-03 17:36:42,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:42,775 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 970 transitions. [2022-03-03 17:36:42,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:42,775 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 970 transitions. [2022-03-03 17:36:42,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-03 17:36:42,776 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:42,776 INFO L514 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] [2022-03-03 17:36:42,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:42,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-03 17:36:43,000 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:43,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:43,000 INFO L85 PathProgramCache]: Analyzing trace with hash -60630437, now seen corresponding path program 1 times [2022-03-03 17:36:43,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:43,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524628615] [2022-03-03 17:36:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:43,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:43,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:43,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524628615] [2022-03-03 17:36:43,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524628615] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:43,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192543571] [2022-03-03 17:36:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:43,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:43,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:43,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:43,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:36:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:43,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 17:36:43,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:43,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:43,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192543571] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:43,886 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:43,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2022-03-03 17:36:43,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059848290] [2022-03-03 17:36:43,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:43,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:36:43,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:43,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:36:43,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:36:43,888 INFO L87 Difference]: Start difference. First operand 399 states and 970 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:43,943 INFO L93 Difference]: Finished difference Result 896 states and 2243 transitions. [2022-03-03 17:36:43,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:36:43,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-03 17:36:43,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:43,947 INFO L225 Difference]: With dead ends: 896 [2022-03-03 17:36:43,947 INFO L226 Difference]: Without dead ends: 752 [2022-03-03 17:36:43,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-03 17:36:43,948 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 111 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:43,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 358 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:36:43,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-03-03 17:36:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 606. [2022-03-03 17:36:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 2.5355371900826444) internal successors, (1534), 605 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:43,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1534 transitions. [2022-03-03 17:36:43,966 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1534 transitions. Word has length 65 [2022-03-03 17:36:43,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:43,966 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 1534 transitions. [2022-03-03 17:36:43,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:43,966 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1534 transitions. [2022-03-03 17:36:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-03 17:36:43,968 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:43,968 INFO L514 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] [2022-03-03 17:36:43,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:44,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:44,180 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1922671995, now seen corresponding path program 2 times [2022-03-03 17:36:44,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:44,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645358777] [2022-03-03 17:36:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:44,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:44,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:44,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645358777] [2022-03-03 17:36:44,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645358777] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:44,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886950459] [2022-03-03 17:36:44,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:36:44,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:44,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:44,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:44,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:36:44,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:36:44,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:44,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-03 17:36:44,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:44,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:44,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886950459] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:44,737 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:44,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2022-03-03 17:36:44,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060592358] [2022-03-03 17:36:44,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:44,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 17:36:44,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 17:36:44,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:36:44,739 INFO L87 Difference]: Start difference. First operand 606 states and 1534 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:44,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:44,857 INFO L93 Difference]: Finished difference Result 755 states and 1922 transitions. [2022-03-03 17:36:44,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:36:44,857 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-03-03 17:36:44,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:44,861 INFO L225 Difference]: With dead ends: 755 [2022-03-03 17:36:44,861 INFO L226 Difference]: Without dead ends: 740 [2022-03-03 17:36:44,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:36:44,863 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 65 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:44,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 311 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:36:44,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-03-03 17:36:44,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 598. [2022-03-03 17:36:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 2.5326633165829144) internal successors, (1512), 597 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1512 transitions. [2022-03-03 17:36:44,879 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1512 transitions. Word has length 65 [2022-03-03 17:36:44,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:44,880 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 1512 transitions. [2022-03-03 17:36:44,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1512 transitions. [2022-03-03 17:36:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:36:44,881 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:44,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:44,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:45,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:45,104 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1971137093, now seen corresponding path program 3 times [2022-03-03 17:36:45,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:45,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668076462] [2022-03-03 17:36:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:45,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:45,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668076462] [2022-03-03 17:36:45,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668076462] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:45,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978928425] [2022-03-03 17:36:45,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:36:45,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:45,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:45,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:45,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:36:45,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:36:45,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:45,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:36:45,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:45,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:45,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:45,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978928425] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:45,732 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:45,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 20 [2022-03-03 17:36:45,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240009019] [2022-03-03 17:36:45,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:45,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:36:45,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:45,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:36:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:36:45,734 INFO L87 Difference]: Start difference. First operand 598 states and 1512 transitions. Second operand has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:46,834 INFO L93 Difference]: Finished difference Result 1484 states and 3857 transitions. [2022-03-03 17:36:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 17:36:46,835 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:36:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:46,842 INFO L225 Difference]: With dead ends: 1484 [2022-03-03 17:36:46,842 INFO L226 Difference]: Without dead ends: 1469 [2022-03-03 17:36:46,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=748, Invalid=3542, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 17:36:46,844 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 522 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:46,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1616 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:36:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2022-03-03 17:36:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 680. [2022-03-03 17:36:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 2.552282768777614) internal successors, (1733), 679 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1733 transitions. [2022-03-03 17:36:46,865 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1733 transitions. Word has length 70 [2022-03-03 17:36:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:46,866 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 1733 transitions. [2022-03-03 17:36:46,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1733 transitions. [2022-03-03 17:36:46,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:36:46,868 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:46,868 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:46,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:47,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:47,084 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:47,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash 481657637, now seen corresponding path program 4 times [2022-03-03 17:36:47,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:47,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664509816] [2022-03-03 17:36:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:47,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:47,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:47,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664509816] [2022-03-03 17:36:47,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664509816] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:47,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171741677] [2022-03-03 17:36:47,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:36:47,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:47,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:47,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:47,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:36:47,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:36:47,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:47,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 17:36:47,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:47,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:47,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171741677] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:47,814 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:47,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 25 [2022-03-03 17:36:47,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123453468] [2022-03-03 17:36:47,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:47,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:36:47,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:47,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:36:47,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:36:47,816 INFO L87 Difference]: Start difference. First operand 680 states and 1733 transitions. Second operand has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:48,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:48,616 INFO L93 Difference]: Finished difference Result 1453 states and 3763 transitions. [2022-03-03 17:36:48,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:36:48,617 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:36:48,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:48,624 INFO L225 Difference]: With dead ends: 1453 [2022-03-03 17:36:48,624 INFO L226 Difference]: Without dead ends: 1438 [2022-03-03 17:36:48,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=624, Invalid=2456, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:36:48,625 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 459 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:48,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1592 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:36:48,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-03-03 17:36:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 696. [2022-03-03 17:36:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 2.5568345323741006) internal successors, (1777), 695 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1777 transitions. [2022-03-03 17:36:48,647 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1777 transitions. Word has length 70 [2022-03-03 17:36:48,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:48,648 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 1777 transitions. [2022-03-03 17:36:48,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1777 transitions. [2022-03-03 17:36:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:36:48,650 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:48,650 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:48,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:48,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:48,867 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:48,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1740204831, now seen corresponding path program 5 times [2022-03-03 17:36:48,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:48,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733705047] [2022-03-03 17:36:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:48,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:48,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:48,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733705047] [2022-03-03 17:36:48,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733705047] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:48,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055693792] [2022-03-03 17:36:48,975 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:36:48,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:48,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:48,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:48,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:36:49,039 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:36:49,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:49,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:36:49,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:49,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:49,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055693792] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:49,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:49,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-03-03 17:36:49,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574548251] [2022-03-03 17:36:49,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:49,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:36:49,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:49,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:36:49,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:36:49,523 INFO L87 Difference]: Start difference. First operand 696 states and 1777 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:50,787 INFO L93 Difference]: Finished difference Result 2222 states and 5753 transitions. [2022-03-03 17:36:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-03 17:36:50,788 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:36:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:50,799 INFO L225 Difference]: With dead ends: 2222 [2022-03-03 17:36:50,799 INFO L226 Difference]: Without dead ends: 2207 [2022-03-03 17:36:50,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1453, Invalid=5519, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 17:36:50,804 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 935 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:50,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1266 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:36:50,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2022-03-03 17:36:50,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 736. [2022-03-03 17:36:50,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 2.578231292517007) internal successors, (1895), 735 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:50,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1895 transitions. [2022-03-03 17:36:50,836 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1895 transitions. Word has length 70 [2022-03-03 17:36:50,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:50,836 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1895 transitions. [2022-03-03 17:36:50,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1895 transitions. [2022-03-03 17:36:50,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:36:50,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:50,838 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:50,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-03 17:36:51,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:51,060 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:51,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:51,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1015878651, now seen corresponding path program 6 times [2022-03-03 17:36:51,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:51,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513458165] [2022-03-03 17:36:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:51,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:51,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:51,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513458165] [2022-03-03 17:36:51,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513458165] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:51,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806081078] [2022-03-03 17:36:51,168 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:36:51,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:51,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:51,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:51,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:36:51,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:36:51,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:51,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:36:51,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:51,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:51,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806081078] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:51,714 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:51,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-03-03 17:36:51,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896099061] [2022-03-03 17:36:51,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:51,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:36:51,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:51,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:36:51,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:36:51,715 INFO L87 Difference]: Start difference. First operand 736 states and 1895 transitions. Second operand has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:52,434 INFO L93 Difference]: Finished difference Result 1526 states and 3939 transitions. [2022-03-03 17:36:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:36:52,435 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:36:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:52,442 INFO L225 Difference]: With dead ends: 1526 [2022-03-03 17:36:52,442 INFO L226 Difference]: Without dead ends: 1502 [2022-03-03 17:36:52,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=620, Invalid=2136, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:36:52,443 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 718 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:52,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 1361 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:36:52,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-03-03 17:36:52,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 736. [2022-03-03 17:36:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 2.5673469387755103) internal successors, (1887), 735 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1887 transitions. [2022-03-03 17:36:52,466 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1887 transitions. Word has length 70 [2022-03-03 17:36:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:52,466 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1887 transitions. [2022-03-03 17:36:52,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1887 transitions. [2022-03-03 17:36:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:36:52,468 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:52,468 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:52,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:52,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-03 17:36:52,687 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash 221980705, now seen corresponding path program 7 times [2022-03-03 17:36:52,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:52,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626534606] [2022-03-03 17:36:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:52,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:52,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:52,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626534606] [2022-03-03 17:36:52,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626534606] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:52,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762353057] [2022-03-03 17:36:52,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:36:52,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:52,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:52,778 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:52,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:36:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:52,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:36:52,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:53,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:53,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762353057] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:53,367 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:53,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-03-03 17:36:53,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624264215] [2022-03-03 17:36:53,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:53,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:36:53,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:53,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:36:53,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:36:53,368 INFO L87 Difference]: Start difference. First operand 736 states and 1887 transitions. Second operand has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:54,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:54,486 INFO L93 Difference]: Finished difference Result 2307 states and 5966 transitions. [2022-03-03 17:36:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:36:54,487 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:36:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:54,497 INFO L225 Difference]: With dead ends: 2307 [2022-03-03 17:36:54,497 INFO L226 Difference]: Without dead ends: 2277 [2022-03-03 17:36:54,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1262, Invalid=4900, Unknown=0, NotChecked=0, Total=6162 [2022-03-03 17:36:54,500 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 592 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:54,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 1495 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:36:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-03-03 17:36:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 900. [2022-03-03 17:36:54,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 2.6407119021134595) internal successors, (2374), 899 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:54,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2374 transitions. [2022-03-03 17:36:54,530 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2374 transitions. Word has length 70 [2022-03-03 17:36:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:54,530 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2374 transitions. [2022-03-03 17:36:54,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:54,530 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2374 transitions. [2022-03-03 17:36:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:36:54,532 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:54,532 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:54,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:54,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:54,747 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1316903109, now seen corresponding path program 8 times [2022-03-03 17:36:54,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:54,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987630321] [2022-03-03 17:36:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:54,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:54,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:54,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987630321] [2022-03-03 17:36:54,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987630321] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:54,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582729618] [2022-03-03 17:36:54,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:36:54,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:54,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:54,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:54,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:36:54,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:36:54,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:54,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:36:54,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:55,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:55,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582729618] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:55,430 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:55,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-03-03 17:36:55,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839107139] [2022-03-03 17:36:55,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:55,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:36:55,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:55,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:36:55,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:36:55,431 INFO L87 Difference]: Start difference. First operand 900 states and 2374 transitions. Second operand has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:56,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:56,127 INFO L93 Difference]: Finished difference Result 2098 states and 5385 transitions. [2022-03-03 17:36:56,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:36:56,128 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:36:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:56,137 INFO L225 Difference]: With dead ends: 2098 [2022-03-03 17:36:56,137 INFO L226 Difference]: Without dead ends: 2050 [2022-03-03 17:36:56,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=663, Invalid=2529, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:36:56,139 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 619 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:56,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 1291 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:36:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2022-03-03 17:36:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 916. [2022-03-03 17:36:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 2.625136612021858) internal successors, (2402), 915 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:56,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 2402 transitions. [2022-03-03 17:36:56,169 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 2402 transitions. Word has length 70 [2022-03-03 17:36:56,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:56,169 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 2402 transitions. [2022-03-03 17:36:56,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:56,170 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2402 transitions. [2022-03-03 17:36:56,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:36:56,172 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:56,172 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:56,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:56,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-03 17:36:56,388 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:56,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:56,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1472197725, now seen corresponding path program 9 times [2022-03-03 17:36:56,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:56,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544823574] [2022-03-03 17:36:56,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:56,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:56,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:56,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544823574] [2022-03-03 17:36:56,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544823574] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:56,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115408628] [2022-03-03 17:36:56,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:36:56,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:56,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:56,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:56,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:36:56,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:36:56,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:56,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:36:56,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:56,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:57,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115408628] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:57,041 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:57,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-03-03 17:36:57,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492337450] [2022-03-03 17:36:57,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:57,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:36:57,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:57,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:36:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:36:57,042 INFO L87 Difference]: Start difference. First operand 916 states and 2402 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:57,422 INFO L93 Difference]: Finished difference Result 1287 states and 3381 transitions. [2022-03-03 17:36:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:36:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:36:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:57,428 INFO L225 Difference]: With dead ends: 1287 [2022-03-03 17:36:57,428 INFO L226 Difference]: Without dead ends: 1251 [2022-03-03 17:36:57,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:36:57,430 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 379 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:57,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 1300 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:36:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-03-03 17:36:57,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 928. [2022-03-03 17:36:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 2.626752966558792) internal successors, (2435), 927 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 2435 transitions. [2022-03-03 17:36:57,451 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 2435 transitions. Word has length 70 [2022-03-03 17:36:57,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:57,451 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 2435 transitions. [2022-03-03 17:36:57,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 2435 transitions. [2022-03-03 17:36:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:36:57,454 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:57,454 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:57,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:57,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-03 17:36:57,675 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:57,676 INFO L85 PathProgramCache]: Analyzing trace with hash -313771491, now seen corresponding path program 10 times [2022-03-03 17:36:57,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:57,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872062233] [2022-03-03 17:36:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:57,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:57,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:57,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872062233] [2022-03-03 17:36:57,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872062233] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:57,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725362722] [2022-03-03 17:36:57,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:36:57,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:57,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:57,767 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:57,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:36:57,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:36:57,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:57,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:36:57,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:58,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:58,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725362722] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:58,367 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:58,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-03-03 17:36:58,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284891166] [2022-03-03 17:36:58,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:58,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:36:58,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:36:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:36:58,369 INFO L87 Difference]: Start difference. First operand 928 states and 2435 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:36:58,862 INFO L93 Difference]: Finished difference Result 1677 states and 4444 transitions. [2022-03-03 17:36:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 17:36:58,863 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:36:58,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:36:58,869 INFO L225 Difference]: With dead ends: 1677 [2022-03-03 17:36:58,869 INFO L226 Difference]: Without dead ends: 1641 [2022-03-03 17:36:58,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=1320, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:36:58,870 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 356 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:36:58,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1172 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:36:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2022-03-03 17:36:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 936. [2022-03-03 17:36:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 2.627807486631016) internal successors, (2457), 935 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 2457 transitions. [2022-03-03 17:36:58,893 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 2457 transitions. Word has length 70 [2022-03-03 17:36:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:36:58,894 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 2457 transitions. [2022-03-03 17:36:58,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:36:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 2457 transitions. [2022-03-03 17:36:58,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:36:58,896 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:36:58,896 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:36:58,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:36:59,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-03 17:36:59,111 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:36:59,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:36:59,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1417338203, now seen corresponding path program 11 times [2022-03-03 17:36:59,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:36:59,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836270157] [2022-03-03 17:36:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:36:59,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:36:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:36:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:59,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:36:59,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836270157] [2022-03-03 17:36:59,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836270157] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:36:59,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420513909] [2022-03-03 17:36:59,192 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:36:59,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:36:59,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:36:59,196 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:36:59,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:36:59,260 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:36:59,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:36:59,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:36:59,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:36:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:59,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:36:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:36:59,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420513909] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:36:59,743 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:36:59,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-03-03 17:36:59,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988990710] [2022-03-03 17:36:59,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:36:59,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:36:59,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:36:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:36:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:36:59,746 INFO L87 Difference]: Start difference. First operand 936 states and 2457 transitions. Second operand has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:00,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:00,705 INFO L93 Difference]: Finished difference Result 3265 states and 8631 transitions. [2022-03-03 17:37:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 17:37:00,705 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:00,713 INFO L225 Difference]: With dead ends: 3265 [2022-03-03 17:37:00,713 INFO L226 Difference]: Without dead ends: 3235 [2022-03-03 17:37:00,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1136, Invalid=4120, Unknown=0, NotChecked=0, Total=5256 [2022-03-03 17:37:00,715 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 613 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:00,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1463 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:37:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2022-03-03 17:37:00,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 1344. [2022-03-03 17:37:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 2.7513030528667164) internal successors, (3695), 1343 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 3695 transitions. [2022-03-03 17:37:00,757 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 3695 transitions. Word has length 70 [2022-03-03 17:37:00,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:00,758 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 3695 transitions. [2022-03-03 17:37:00,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 3695 transitions. [2022-03-03 17:37:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:00,761 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:00,761 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:00,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:00,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-03 17:37:00,975 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:00,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1338745279, now seen corresponding path program 12 times [2022-03-03 17:37:00,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:00,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874383332] [2022-03-03 17:37:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:00,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:01,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:01,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874383332] [2022-03-03 17:37:01,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874383332] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:01,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956539198] [2022-03-03 17:37:01,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:37:01,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:01,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:01,053 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:01,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:37:01,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:37:01,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:01,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:01,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:01,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:01,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956539198] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:01,582 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:01,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-03-03 17:37:01,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202569320] [2022-03-03 17:37:01,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:01,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:37:01,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:37:01,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:37:01,585 INFO L87 Difference]: Start difference. First operand 1344 states and 3695 transitions. Second operand has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:02,259 INFO L93 Difference]: Finished difference Result 3079 states and 8156 transitions. [2022-03-03 17:37:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:37:02,260 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:02,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:02,265 INFO L225 Difference]: With dead ends: 3079 [2022-03-03 17:37:02,265 INFO L226 Difference]: Without dead ends: 3031 [2022-03-03 17:37:02,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=694, Invalid=2498, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:37:02,266 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 782 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:02,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1283 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:37:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-03-03 17:37:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1340. [2022-03-03 17:37:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 2.745332337565347) internal successors, (3676), 1339 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 3676 transitions. [2022-03-03 17:37:02,302 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 3676 transitions. Word has length 70 [2022-03-03 17:37:02,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:02,302 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 3676 transitions. [2022-03-03 17:37:02,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:02,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 3676 transitions. [2022-03-03 17:37:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:02,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:02,305 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:02,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-03 17:37:02,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:02,519 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash -167121183, now seen corresponding path program 13 times [2022-03-03 17:37:02,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:02,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848705404] [2022-03-03 17:37:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:02,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:02,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:02,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848705404] [2022-03-03 17:37:02,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848705404] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:02,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227273810] [2022-03-03 17:37:02,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:37:02,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:02,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:02,624 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:02,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:37:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:02,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:02,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:02,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:03,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227273810] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:03,151 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:03,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-03-03 17:37:03,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383854651] [2022-03-03 17:37:03,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:03,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:37:03,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:03,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:37:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:37:03,153 INFO L87 Difference]: Start difference. First operand 1340 states and 3676 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:04,025 INFO L93 Difference]: Finished difference Result 3774 states and 10220 transitions. [2022-03-03 17:37:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 17:37:04,025 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:04,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:04,034 INFO L225 Difference]: With dead ends: 3774 [2022-03-03 17:37:04,034 INFO L226 Difference]: Without dead ends: 3738 [2022-03-03 17:37:04,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=906, Invalid=3786, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 17:37:04,036 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 752 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:04,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 1393 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:37:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2022-03-03 17:37:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 2108. [2022-03-03 17:37:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 2.815377313716184) internal successors, (5932), 2107 states have internal predecessors, (5932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5932 transitions. [2022-03-03 17:37:04,086 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5932 transitions. Word has length 70 [2022-03-03 17:37:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:04,086 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5932 transitions. [2022-03-03 17:37:04,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5932 transitions. [2022-03-03 17:37:04,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:04,093 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:04,093 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:04,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:04,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-03 17:37:04,307 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:04,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1676534515, now seen corresponding path program 14 times [2022-03-03 17:37:04,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:04,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24725871] [2022-03-03 17:37:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:04,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:04,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:04,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24725871] [2022-03-03 17:37:04,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24725871] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:04,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165949800] [2022-03-03 17:37:04,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:37:04,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:04,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:04,392 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:04,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:37:04,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:04,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:04,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:04,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:04,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:04,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165949800] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:04,884 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:04,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-03-03 17:37:04,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087448407] [2022-03-03 17:37:04,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:04,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:37:04,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:04,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:37:04,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:37:04,885 INFO L87 Difference]: Start difference. First operand 2108 states and 5932 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:05,177 INFO L93 Difference]: Finished difference Result 2346 states and 6507 transitions. [2022-03-03 17:37:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 17:37:05,177 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:05,183 INFO L225 Difference]: With dead ends: 2346 [2022-03-03 17:37:05,183 INFO L226 Difference]: Without dead ends: 2298 [2022-03-03 17:37:05,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:37:05,184 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 319 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:05,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 1069 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:37:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-03-03 17:37:05,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2108. [2022-03-03 17:37:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 2.813478879924063) internal successors, (5928), 2107 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:05,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5928 transitions. [2022-03-03 17:37:05,257 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5928 transitions. Word has length 70 [2022-03-03 17:37:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:05,257 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5928 transitions. [2022-03-03 17:37:05,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5928 transitions. [2022-03-03 17:37:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:05,262 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:05,262 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:05,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:05,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-03 17:37:05,483 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:05,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash -570914211, now seen corresponding path program 15 times [2022-03-03 17:37:05,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:05,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205221565] [2022-03-03 17:37:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:05,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:05,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:05,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205221565] [2022-03-03 17:37:05,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205221565] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:05,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783637199] [2022-03-03 17:37:05,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:37:05,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:05,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:05,580 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:05,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:37:05,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:37:05,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:05,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:05,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:05,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:06,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783637199] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:06,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:06,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-03-03 17:37:06,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581358027] [2022-03-03 17:37:06,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:06,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:37:06,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:37:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:37:06,040 INFO L87 Difference]: Start difference. First operand 2108 states and 5928 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:06,634 INFO L93 Difference]: Finished difference Result 3337 states and 9298 transitions. [2022-03-03 17:37:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:37:06,635 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:06,643 INFO L225 Difference]: With dead ends: 3337 [2022-03-03 17:37:06,643 INFO L226 Difference]: Without dead ends: 3253 [2022-03-03 17:37:06,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=462, Invalid=1988, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:37:06,645 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 337 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:06,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1471 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:37:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2022-03-03 17:37:06,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 2316. [2022-03-03 17:37:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2315 states have (on average 2.819870410367171) internal successors, (6528), 2315 states have internal predecessors, (6528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 6528 transitions. [2022-03-03 17:37:06,692 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 6528 transitions. Word has length 70 [2022-03-03 17:37:06,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:06,692 INFO L470 AbstractCegarLoop]: Abstraction has 2316 states and 6528 transitions. [2022-03-03 17:37:06,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 6528 transitions. [2022-03-03 17:37:06,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:06,696 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:06,696 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:06,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:06,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:06,919 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:06,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:06,920 INFO L85 PathProgramCache]: Analyzing trace with hash -424263903, now seen corresponding path program 16 times [2022-03-03 17:37:06,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:06,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206742848] [2022-03-03 17:37:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:06,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:07,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:07,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206742848] [2022-03-03 17:37:07,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206742848] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:07,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172209922] [2022-03-03 17:37:07,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:37:07,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:07,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:07,029 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:07,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:37:07,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:37:07,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:07,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:07,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:07,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:07,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172209922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:07,496 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:07,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-03-03 17:37:07,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875388579] [2022-03-03 17:37:07,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:07,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:37:07,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:07,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:37:07,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:37:07,498 INFO L87 Difference]: Start difference. First operand 2316 states and 6528 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:08,168 INFO L93 Difference]: Finished difference Result 4519 states and 12420 transitions. [2022-03-03 17:37:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:37:08,168 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:08,178 INFO L225 Difference]: With dead ends: 4519 [2022-03-03 17:37:08,178 INFO L226 Difference]: Without dead ends: 4435 [2022-03-03 17:37:08,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=650, Invalid=2542, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:37:08,180 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 620 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:08,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1335 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:37:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2022-03-03 17:37:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 1840. [2022-03-03 17:37:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 2.809679173463839) internal successors, (5167), 1839 states have internal predecessors, (5167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 5167 transitions. [2022-03-03 17:37:08,231 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 5167 transitions. Word has length 70 [2022-03-03 17:37:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:08,232 INFO L470 AbstractCegarLoop]: Abstraction has 1840 states and 5167 transitions. [2022-03-03 17:37:08,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 5167 transitions. [2022-03-03 17:37:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:08,235 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:08,235 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:08,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:08,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:08,456 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:08,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:08,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1419391795, now seen corresponding path program 17 times [2022-03-03 17:37:08,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:08,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395455324] [2022-03-03 17:37:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:08,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:08,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:08,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395455324] [2022-03-03 17:37:08,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395455324] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:08,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399505149] [2022-03-03 17:37:08,541 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:37:08,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:08,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:08,543 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:08,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:37:08,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:37:08,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:08,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:37:08,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:08,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:09,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399505149] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:09,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:09,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2022-03-03 17:37:09,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882997465] [2022-03-03 17:37:09,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:09,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:37:09,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:37:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:37:09,009 INFO L87 Difference]: Start difference. First operand 1840 states and 5167 transitions. Second operand has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:09,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:09,285 INFO L93 Difference]: Finished difference Result 2482 states and 6932 transitions. [2022-03-03 17:37:09,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:37:09,285 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:09,288 INFO L225 Difference]: With dead ends: 2482 [2022-03-03 17:37:09,288 INFO L226 Difference]: Without dead ends: 2434 [2022-03-03 17:37:09,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:37:09,289 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 250 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:09,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 679 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:37:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2022-03-03 17:37:09,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1832. [2022-03-03 17:37:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 2.8099399235390496) internal successors, (5145), 1831 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 5145 transitions. [2022-03-03 17:37:09,320 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 5145 transitions. Word has length 70 [2022-03-03 17:37:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:09,321 INFO L470 AbstractCegarLoop]: Abstraction has 1832 states and 5145 transitions. [2022-03-03 17:37:09,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 5145 transitions. [2022-03-03 17:37:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:09,324 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:09,325 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:09,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:09,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:09,544 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash -490468571, now seen corresponding path program 18 times [2022-03-03 17:37:09,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:09,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759352723] [2022-03-03 17:37:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:09,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:09,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759352723] [2022-03-03 17:37:09,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759352723] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:09,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052397413] [2022-03-03 17:37:09,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:37:09,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:09,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:09,656 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:09,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:37:09,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:37:09,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:09,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 17:37:09,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:09,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:10,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052397413] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:10,182 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:10,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2022-03-03 17:37:10,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640293494] [2022-03-03 17:37:10,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:10,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:37:10,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:10,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:37:10,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:37:10,184 INFO L87 Difference]: Start difference. First operand 1832 states and 5145 transitions. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:10,753 INFO L93 Difference]: Finished difference Result 2986 states and 8110 transitions. [2022-03-03 17:37:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:37:10,753 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:10,757 INFO L225 Difference]: With dead ends: 2986 [2022-03-03 17:37:10,757 INFO L226 Difference]: Without dead ends: 2956 [2022-03-03 17:37:10,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=557, Invalid=2095, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:37:10,760 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 429 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:10,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1432 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:37:10,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-03-03 17:37:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2000. [2022-03-03 17:37:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 2.8269134567283642) internal successors, (5651), 1999 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 5651 transitions. [2022-03-03 17:37:10,798 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 5651 transitions. Word has length 70 [2022-03-03 17:37:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:10,799 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 5651 transitions. [2022-03-03 17:37:10,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 5651 transitions. [2022-03-03 17:37:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:10,803 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:10,803 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:10,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:11,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-03 17:37:11,028 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:11,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:11,029 INFO L85 PathProgramCache]: Analyzing trace with hash 43752443, now seen corresponding path program 19 times [2022-03-03 17:37:11,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:11,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163198485] [2022-03-03 17:37:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:11,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:11,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:11,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163198485] [2022-03-03 17:37:11,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163198485] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:11,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664089554] [2022-03-03 17:37:11,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:37:11,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:11,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:11,116 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:11,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:37:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:11,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:11,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:11,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:11,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664089554] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:11,576 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:11,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-03-03 17:37:11,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886952545] [2022-03-03 17:37:11,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:11,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:37:11,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:37:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:37:11,580 INFO L87 Difference]: Start difference. First operand 2000 states and 5651 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:11,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:11,950 INFO L93 Difference]: Finished difference Result 2623 states and 7248 transitions. [2022-03-03 17:37:11,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 17:37:11,951 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:11,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:11,969 INFO L225 Difference]: With dead ends: 2623 [2022-03-03 17:37:11,969 INFO L226 Difference]: Without dead ends: 2575 [2022-03-03 17:37:11,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:37:11,970 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 442 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:11,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 712 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:37:11,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2022-03-03 17:37:11,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2184. [2022-03-03 17:37:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2183 states have (on average 2.836921667430142) internal successors, (6193), 2183 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 6193 transitions. [2022-03-03 17:37:12,001 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 6193 transitions. Word has length 70 [2022-03-03 17:37:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:12,002 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 6193 transitions. [2022-03-03 17:37:12,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:12,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 6193 transitions. [2022-03-03 17:37:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:12,005 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:12,006 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:12,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:12,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-03 17:37:12,217 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:12,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash 185043233, now seen corresponding path program 20 times [2022-03-03 17:37:12,218 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:12,218 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815834333] [2022-03-03 17:37:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:12,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:12,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:12,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815834333] [2022-03-03 17:37:12,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815834333] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:12,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495279038] [2022-03-03 17:37:12,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:37:12,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:12,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:12,304 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:12,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:37:12,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:12,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:12,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:12,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:12,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:37:12,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495279038] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:12,783 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:12,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-03-03 17:37:12,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171384551] [2022-03-03 17:37:12,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:12,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:37:12,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:12,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:37:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:37:12,785 INFO L87 Difference]: Start difference. First operand 2184 states and 6193 transitions. Second operand has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:13,311 INFO L93 Difference]: Finished difference Result 3459 states and 9481 transitions. [2022-03-03 17:37:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:37:13,311 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:13,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:13,316 INFO L225 Difference]: With dead ends: 3459 [2022-03-03 17:37:13,316 INFO L226 Difference]: Without dead ends: 3429 [2022-03-03 17:37:13,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=494, Invalid=1858, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:37:13,317 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 356 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:13,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1151 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:37:13,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2022-03-03 17:37:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2476. [2022-03-03 17:37:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2475 states have (on average 2.850909090909091) internal successors, (7056), 2475 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 7056 transitions. [2022-03-03 17:37:13,371 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 7056 transitions. Word has length 70 [2022-03-03 17:37:13,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:13,371 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 7056 transitions. [2022-03-03 17:37:13,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 7056 transitions. [2022-03-03 17:37:13,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:13,376 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:13,376 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:13,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:13,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:13,591 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1353840581, now seen corresponding path program 21 times [2022-03-03 17:37:13,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:13,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698794536] [2022-03-03 17:37:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:13,667 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:13,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698794536] [2022-03-03 17:37:13,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698794536] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:13,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080149107] [2022-03-03 17:37:13,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:37:13,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:13,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:13,669 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:13,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:37:13,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:37:13,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:13,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:13,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:13,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:14,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080149107] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:14,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:14,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-03-03 17:37:14,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424590890] [2022-03-03 17:37:14,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:14,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:37:14,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:14,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:37:14,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:37:14,071 INFO L87 Difference]: Start difference. First operand 2476 states and 7056 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:14,475 INFO L93 Difference]: Finished difference Result 3275 states and 9012 transitions. [2022-03-03 17:37:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:37:14,475 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:14,480 INFO L225 Difference]: With dead ends: 3275 [2022-03-03 17:37:14,480 INFO L226 Difference]: Without dead ends: 3227 [2022-03-03 17:37:14,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=377, Invalid=1515, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:37:14,480 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 491 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:14,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 922 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:37:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2022-03-03 17:37:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2344. [2022-03-03 17:37:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:14,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-03-03 17:37:14,514 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-03-03 17:37:14,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:14,514 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-03-03 17:37:14,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:14,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-03-03 17:37:14,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:14,519 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:14,519 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:14,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:14,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:14,735 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:14,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1435260253, now seen corresponding path program 22 times [2022-03-03 17:37:14,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:14,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895540130] [2022-03-03 17:37:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:14,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:14,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895540130] [2022-03-03 17:37:14,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895540130] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:14,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942508153] [2022-03-03 17:37:14,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:37:14,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:14,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:14,818 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:14,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:37:14,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:37:14,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:14,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:14,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:15,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:15,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942508153] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:15,268 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:15,268 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-03-03 17:37:15,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546751860] [2022-03-03 17:37:15,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:15,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:37:15,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:15,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:37:15,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:37:15,269 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:15,708 INFO L93 Difference]: Finished difference Result 2869 states and 7974 transitions. [2022-03-03 17:37:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:37:15,708 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:15,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:15,711 INFO L225 Difference]: With dead ends: 2869 [2022-03-03 17:37:15,711 INFO L226 Difference]: Without dead ends: 2797 [2022-03-03 17:37:15,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1620, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:37:15,712 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 346 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:15,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1244 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:37:15,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-03-03 17:37:15,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2348. [2022-03-03 17:37:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2347 states have (on average 2.8410737111205795) internal successors, (6668), 2347 states have internal predecessors, (6668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:15,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 6668 transitions. [2022-03-03 17:37:15,748 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 6668 transitions. Word has length 70 [2022-03-03 17:37:15,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:15,748 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 6668 transitions. [2022-03-03 17:37:15,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 6668 transitions. [2022-03-03 17:37:15,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:15,752 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:15,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:15,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-03 17:37:15,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-03 17:37:15,967 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:15,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:15,968 INFO L85 PathProgramCache]: Analyzing trace with hash 331693541, now seen corresponding path program 23 times [2022-03-03 17:37:15,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:15,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407799287] [2022-03-03 17:37:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:16,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:16,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407799287] [2022-03-03 17:37:16,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407799287] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:16,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468838381] [2022-03-03 17:37:16,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:37:16,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:16,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:16,052 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:16,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:37:16,116 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:37:16,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:16,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:16,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:16,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:37:16,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468838381] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:16,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:16,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-03-03 17:37:16,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818545951] [2022-03-03 17:37:16,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:16,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:37:16,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:16,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:37:16,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:37:16,489 INFO L87 Difference]: Start difference. First operand 2348 states and 6668 transitions. Second operand has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:17,062 INFO L93 Difference]: Finished difference Result 3827 states and 10486 transitions. [2022-03-03 17:37:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:37:17,062 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:17,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:17,067 INFO L225 Difference]: With dead ends: 3827 [2022-03-03 17:37:17,067 INFO L226 Difference]: Without dead ends: 3797 [2022-03-03 17:37:17,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=562, Invalid=1988, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:37:17,068 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 534 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:17,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 943 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:37:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2022-03-03 17:37:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2672. [2022-03-03 17:37:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2671 states have (on average 2.868962935230251) internal successors, (7663), 2671 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 7663 transitions. [2022-03-03 17:37:17,111 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 7663 transitions. Word has length 70 [2022-03-03 17:37:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:17,111 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 7663 transitions. [2022-03-03 17:37:17,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:17,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 7663 transitions. [2022-03-03 17:37:17,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:17,116 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:17,116 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:17,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:17,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-03 17:37:17,339 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:17,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:17,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1207190273, now seen corresponding path program 24 times [2022-03-03 17:37:17,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:17,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536191277] [2022-03-03 17:37:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:17,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:17,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:17,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536191277] [2022-03-03 17:37:17,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536191277] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:17,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062117350] [2022-03-03 17:37:17,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:37:17,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:17,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:17,434 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:17,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:37:17,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:37:17,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:17,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:17,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:17,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:17,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062117350] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:17,829 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:17,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-03-03 17:37:17,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390016587] [2022-03-03 17:37:17,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:17,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:37:17,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:17,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:37:17,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:37:17,830 INFO L87 Difference]: Start difference. First operand 2672 states and 7663 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:18,307 INFO L93 Difference]: Finished difference Result 3690 states and 10156 transitions. [2022-03-03 17:37:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:37:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:18,312 INFO L225 Difference]: With dead ends: 3690 [2022-03-03 17:37:18,312 INFO L226 Difference]: Without dead ends: 3642 [2022-03-03 17:37:18,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=418, Invalid=1562, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:37:18,312 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 427 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:18,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 1300 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:37:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2022-03-03 17:37:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 2464. [2022-03-03 17:37:18,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 2.8400324807145756) internal successors, (6995), 2463 states have internal predecessors, (6995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:18,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 6995 transitions. [2022-03-03 17:37:18,344 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 6995 transitions. Word has length 70 [2022-03-03 17:37:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:18,345 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 6995 transitions. [2022-03-03 17:37:18,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:18,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 6995 transitions. [2022-03-03 17:37:18,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:18,349 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:18,349 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:18,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-03 17:37:18,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-03 17:37:18,559 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1581910561, now seen corresponding path program 25 times [2022-03-03 17:37:18,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:18,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166388226] [2022-03-03 17:37:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:18,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:18,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:18,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166388226] [2022-03-03 17:37:18,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166388226] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:18,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18350635] [2022-03-03 17:37:18,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:37:18,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:18,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:18,648 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:18,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:37:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:18,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:18,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:18,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:19,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18350635] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:19,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:19,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-03-03 17:37:19,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330739353] [2022-03-03 17:37:19,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:19,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:37:19,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:19,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:37:19,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:37:19,107 INFO L87 Difference]: Start difference. First operand 2464 states and 6995 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:19,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:19,649 INFO L93 Difference]: Finished difference Result 3768 states and 10314 transitions. [2022-03-03 17:37:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:37:19,650 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:19,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:19,656 INFO L225 Difference]: With dead ends: 3768 [2022-03-03 17:37:19,656 INFO L226 Difference]: Without dead ends: 3696 [2022-03-03 17:37:19,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=507, Invalid=2145, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:37:19,657 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 534 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:19,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1259 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:37:19,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2022-03-03 17:37:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 2344. [2022-03-03 17:37:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-03-03 17:37:19,689 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-03-03 17:37:19,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:19,690 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-03-03 17:37:19,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:19,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-03-03 17:37:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:37:19,693 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:19,693 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:19,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-03 17:37:19,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-03 17:37:19,894 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:19,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash -869401037, now seen corresponding path program 26 times [2022-03-03 17:37:19,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:19,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159331609] [2022-03-03 17:37:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:19,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:19,969 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:19,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159331609] [2022-03-03 17:37:19,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159331609] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:19,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213158669] [2022-03-03 17:37:19,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:37:19,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:19,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:19,971 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:19,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 17:37:20,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:20,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:20,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:37:20,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:20,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:20,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213158669] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:20,416 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:20,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-03-03 17:37:20,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257821280] [2022-03-03 17:37:20,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:20,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:37:20,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:37:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:37:20,417 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:20,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:20,690 INFO L93 Difference]: Finished difference Result 2575 states and 7190 transitions. [2022-03-03 17:37:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 17:37:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:37:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:20,694 INFO L225 Difference]: With dead ends: 2575 [2022-03-03 17:37:20,694 INFO L226 Difference]: Without dead ends: 2527 [2022-03-03 17:37:20,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:37:20,695 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 270 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:20,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 1036 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:37:20,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-03-03 17:37:20,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2344. [2022-03-03 17:37:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-03-03 17:37:20,736 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-03-03 17:37:20,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:20,737 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-03-03 17:37:20,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:20,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-03-03 17:37:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-03 17:37:20,740 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:20,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:20,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:20,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:20,941 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:20,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1026824483, now seen corresponding path program 27 times [2022-03-03 17:37:20,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:20,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149659160] [2022-03-03 17:37:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:20,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:21,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:21,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149659160] [2022-03-03 17:37:21,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149659160] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:21,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410370774] [2022-03-03 17:37:21,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:37:21,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:21,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:21,018 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:21,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 17:37:21,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:37:21,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:21,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:37:21,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:21,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:21,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410370774] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:21,526 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:21,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 14 [2022-03-03 17:37:21,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408413300] [2022-03-03 17:37:21,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:21,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:37:21,526 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:37:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:37:21,527 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:21,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:21,694 INFO L93 Difference]: Finished difference Result 5997 states and 17257 transitions. [2022-03-03 17:37:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:37:21,694 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-03 17:37:21,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:21,703 INFO L225 Difference]: With dead ends: 5997 [2022-03-03 17:37:21,704 INFO L226 Difference]: Without dead ends: 5679 [2022-03-03 17:37:21,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:37:21,704 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 329 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:21,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 943 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:37:21,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2022-03-03 17:37:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 3407. [2022-03-03 17:37:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3406 states have (on average 2.8755137991779214) internal successors, (9794), 3406 states have internal predecessors, (9794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 9794 transitions. [2022-03-03 17:37:21,755 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 9794 transitions. Word has length 72 [2022-03-03 17:37:21,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:21,755 INFO L470 AbstractCegarLoop]: Abstraction has 3407 states and 9794 transitions. [2022-03-03 17:37:21,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:21,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 9794 transitions. [2022-03-03 17:37:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-03 17:37:21,760 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:21,760 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:21,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-03 17:37:21,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:21,961 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:21,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:21,961 INFO L85 PathProgramCache]: Analyzing trace with hash -185719417, now seen corresponding path program 28 times [2022-03-03 17:37:21,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:21,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447454429] [2022-03-03 17:37:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:21,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:22,069 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:22,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447454429] [2022-03-03 17:37:22,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447454429] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:22,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372450562] [2022-03-03 17:37:22,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:37:22,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:22,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:22,072 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:22,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 17:37:22,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:37:22,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:22,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:37:22,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:22,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:22,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372450562] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:22,905 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:22,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-03 17:37:22,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065742256] [2022-03-03 17:37:22,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:22,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:37:22,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:22,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:37:22,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:37:22,906 INFO L87 Difference]: Start difference. First operand 3407 states and 9794 transitions. Second operand has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:24,443 INFO L93 Difference]: Finished difference Result 5692 states and 16101 transitions. [2022-03-03 17:37:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 17:37:24,443 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-03-03 17:37:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:24,451 INFO L225 Difference]: With dead ends: 5692 [2022-03-03 17:37:24,451 INFO L226 Difference]: Without dead ends: 5647 [2022-03-03 17:37:24,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2018 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=989, Invalid=5653, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:37:24,452 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 435 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:24,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 2289 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:37:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2022-03-03 17:37:24,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 4007. [2022-03-03 17:37:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 4006 states have (on average 2.8866699950074888) internal successors, (11564), 4006 states have internal predecessors, (11564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 11564 transitions. [2022-03-03 17:37:24,508 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 11564 transitions. Word has length 72 [2022-03-03 17:37:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:24,508 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 11564 transitions. [2022-03-03 17:37:24,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:24,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 11564 transitions. [2022-03-03 17:37:24,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:24,513 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:24,513 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:24,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-03 17:37:24,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-03-03 17:37:24,714 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:24,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:24,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1623433347, now seen corresponding path program 29 times [2022-03-03 17:37:24,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:24,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968532095] [2022-03-03 17:37:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:24,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:24,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:24,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968532095] [2022-03-03 17:37:24,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968532095] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:24,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737447351] [2022-03-03 17:37:24,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:37:24,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:24,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:24,865 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:24,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 17:37:24,935 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:37:24,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:24,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:37:24,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:25,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:25,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737447351] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:25,672 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:25,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 31 [2022-03-03 17:37:25,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376961906] [2022-03-03 17:37:25,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:25,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:37:25,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:25,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:37:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:37:25,673 INFO L87 Difference]: Start difference. First operand 4007 states and 11564 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:27,235 INFO L93 Difference]: Finished difference Result 7384 states and 21033 transitions. [2022-03-03 17:37:27,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-03 17:37:27,235 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:37:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:27,248 INFO L225 Difference]: With dead ends: 7384 [2022-03-03 17:37:27,248 INFO L226 Difference]: Without dead ends: 7339 [2022-03-03 17:37:27,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3050 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2222, Invalid=8080, Unknown=0, NotChecked=0, Total=10302 [2022-03-03 17:37:27,250 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 876 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:27,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 2685 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2022-03-03 17:37:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 4149. [2022-03-03 17:37:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4149 states, 4148 states have (on average 2.882835101253616) internal successors, (11958), 4148 states have internal predecessors, (11958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 11958 transitions. [2022-03-03 17:37:27,336 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 11958 transitions. Word has length 77 [2022-03-03 17:37:27,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:27,336 INFO L470 AbstractCegarLoop]: Abstraction has 4149 states and 11958 transitions. [2022-03-03 17:37:27,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 11958 transitions. [2022-03-03 17:37:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:27,344 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:27,344 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:27,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-03 17:37:27,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:27,548 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:27,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:27,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1870223975, now seen corresponding path program 30 times [2022-03-03 17:37:27,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:27,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211993227] [2022-03-03 17:37:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:27,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:27,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:27,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211993227] [2022-03-03 17:37:27,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211993227] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:27,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821044771] [2022-03-03 17:37:27,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:37:27,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:27,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:27,708 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:27,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 17:37:27,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:37:27,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:27,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:37:27,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:28,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:28,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821044771] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:28,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:28,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 34 [2022-03-03 17:37:28,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306227051] [2022-03-03 17:37:28,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:28,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:37:28,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:28,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:37:28,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:37:28,398 INFO L87 Difference]: Start difference. First operand 4149 states and 11958 transitions. Second operand has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:30,316 INFO L93 Difference]: Finished difference Result 7597 states and 21455 transitions. [2022-03-03 17:37:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 17:37:30,316 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:37:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:30,327 INFO L225 Difference]: With dead ends: 7597 [2022-03-03 17:37:30,327 INFO L226 Difference]: Without dead ends: 7552 [2022-03-03 17:37:30,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3856 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1951, Invalid=10481, Unknown=0, NotChecked=0, Total=12432 [2022-03-03 17:37:30,329 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 781 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:30,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 3145 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:37:30,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2022-03-03 17:37:30,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 4165. [2022-03-03 17:37:30,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 4164 states have (on average 2.882324687800192) internal successors, (12002), 4164 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 12002 transitions. [2022-03-03 17:37:30,454 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 12002 transitions. Word has length 77 [2022-03-03 17:37:30,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:30,454 INFO L470 AbstractCegarLoop]: Abstraction has 4165 states and 12002 transitions. [2022-03-03 17:37:30,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:30,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 12002 transitions. [2022-03-03 17:37:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:30,459 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:30,459 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:30,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-03-03 17:37:30,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:30,660 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1259138339, now seen corresponding path program 31 times [2022-03-03 17:37:30,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:30,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764416573] [2022-03-03 17:37:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:30,811 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:30,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764416573] [2022-03-03 17:37:30,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764416573] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:30,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048335271] [2022-03-03 17:37:30,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:37:30,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:30,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:30,813 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:30,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 17:37:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:30,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:37:30,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:31,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:31,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048335271] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:31,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:31,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 34 [2022-03-03 17:37:31,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205636008] [2022-03-03 17:37:31,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:31,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:37:31,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:31,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:37:31,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:37:31,522 INFO L87 Difference]: Start difference. First operand 4165 states and 12002 transitions. Second operand has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:33,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:33,319 INFO L93 Difference]: Finished difference Result 7442 states and 21104 transitions. [2022-03-03 17:37:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-03 17:37:33,319 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:37:33,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:33,330 INFO L225 Difference]: With dead ends: 7442 [2022-03-03 17:37:33,330 INFO L226 Difference]: Without dead ends: 7397 [2022-03-03 17:37:33,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3920 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2390, Invalid=10266, Unknown=0, NotChecked=0, Total=12656 [2022-03-03 17:37:33,332 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 852 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:33,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 2527 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:37:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7397 states. [2022-03-03 17:37:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7397 to 4181. [2022-03-03 17:37:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4181 states, 4180 states have (on average 2.881818181818182) internal successors, (12046), 4180 states have internal predecessors, (12046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 12046 transitions. [2022-03-03 17:37:33,428 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 12046 transitions. Word has length 77 [2022-03-03 17:37:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:33,429 INFO L470 AbstractCegarLoop]: Abstraction has 4181 states and 12046 transitions. [2022-03-03 17:37:33,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 12046 transitions. [2022-03-03 17:37:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:33,439 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:33,439 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:33,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-03 17:37:33,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-03-03 17:37:33,646 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:33,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:33,646 INFO L85 PathProgramCache]: Analyzing trace with hash -962724129, now seen corresponding path program 32 times [2022-03-03 17:37:33,646 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:33,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968641462] [2022-03-03 17:37:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:33,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:33,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:33,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968641462] [2022-03-03 17:37:33,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968641462] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:33,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328471660] [2022-03-03 17:37:33,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:37:33,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:33,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:33,776 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:33,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 17:37:33,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:33,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:33,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:37:33,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:34,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:34,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328471660] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:34,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:34,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-03-03 17:37:34,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461751053] [2022-03-03 17:37:34,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:34,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:37:34,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:34,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:37:34,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:37:34,579 INFO L87 Difference]: Start difference. First operand 4181 states and 12046 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:37,889 INFO L93 Difference]: Finished difference Result 8898 states and 24913 transitions. [2022-03-03 17:37:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-03-03 17:37:37,889 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:37:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:37,902 INFO L225 Difference]: With dead ends: 8898 [2022-03-03 17:37:37,902 INFO L226 Difference]: Without dead ends: 8883 [2022-03-03 17:37:37,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7666 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3616, Invalid=18140, Unknown=0, NotChecked=0, Total=21756 [2022-03-03 17:37:37,905 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1270 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:37,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 3069 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:37:37,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2022-03-03 17:37:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 4189. [2022-03-03 17:37:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 2.883476599808978) internal successors, (12076), 4188 states have internal predecessors, (12076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 12076 transitions. [2022-03-03 17:37:38,008 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 12076 transitions. Word has length 77 [2022-03-03 17:37:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:38,008 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 12076 transitions. [2022-03-03 17:37:38,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 12076 transitions. [2022-03-03 17:37:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:38,013 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:38,013 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:38,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-03-03 17:37:38,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-03 17:37:38,214 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:38,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:38,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1793359353, now seen corresponding path program 33 times [2022-03-03 17:37:38,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:38,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723773721] [2022-03-03 17:37:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:38,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:38,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:38,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723773721] [2022-03-03 17:37:38,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723773721] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:38,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83672713] [2022-03-03 17:37:38,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:37:38,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:38,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:38,334 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:38,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 17:37:38,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:37:38,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:38,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:37:38,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:38,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:38,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83672713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:38,941 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:38,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 33 [2022-03-03 17:37:38,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48995744] [2022-03-03 17:37:38,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:38,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:37:38,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:38,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:37:38,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:37:38,942 INFO L87 Difference]: Start difference. First operand 4189 states and 12076 transitions. Second operand has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:41,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:41,603 INFO L93 Difference]: Finished difference Result 8616 states and 24405 transitions. [2022-03-03 17:37:41,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-03-03 17:37:41,604 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:37:41,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:41,617 INFO L225 Difference]: With dead ends: 8616 [2022-03-03 17:37:41,617 INFO L226 Difference]: Without dead ends: 8592 [2022-03-03 17:37:41,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6282 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3113, Invalid=15247, Unknown=0, NotChecked=0, Total=18360 [2022-03-03 17:37:41,619 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1422 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:41,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 3091 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:37:41,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-03-03 17:37:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 4189. [2022-03-03 17:37:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 2.8815663801337155) internal successors, (12068), 4188 states have internal predecessors, (12068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 12068 transitions. [2022-03-03 17:37:41,702 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 12068 transitions. Word has length 77 [2022-03-03 17:37:41,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:41,703 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 12068 transitions. [2022-03-03 17:37:41,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 12068 transitions. [2022-03-03 17:37:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:41,733 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:41,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:41,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-03-03 17:37:41,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-03 17:37:41,934 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:41,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:41,935 INFO L85 PathProgramCache]: Analyzing trace with hash 802013543, now seen corresponding path program 34 times [2022-03-03 17:37:41,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:41,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516504179] [2022-03-03 17:37:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:41,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:42,086 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:42,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516504179] [2022-03-03 17:37:42,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516504179] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:42,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451245509] [2022-03-03 17:37:42,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:37:42,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:42,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:42,088 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:42,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 17:37:42,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:37:42,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:42,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:37:42,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:42,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:42,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451245509] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:42,832 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:42,832 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 34 [2022-03-03 17:37:42,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357336928] [2022-03-03 17:37:42,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:42,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:37:42,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:42,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:37:42,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:37:42,834 INFO L87 Difference]: Start difference. First operand 4189 states and 12068 transitions. Second operand has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:43,777 INFO L93 Difference]: Finished difference Result 6740 states and 19159 transitions. [2022-03-03 17:37:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:37:43,778 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:37:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:43,788 INFO L225 Difference]: With dead ends: 6740 [2022-03-03 17:37:43,788 INFO L226 Difference]: Without dead ends: 6695 [2022-03-03 17:37:43,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1024, Invalid=4526, Unknown=0, NotChecked=0, Total=5550 [2022-03-03 17:37:43,789 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 647 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:43,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 2317 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:37:43,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2022-03-03 17:37:43,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 4197. [2022-03-03 17:37:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 4196 states have (on average 2.8813155386081983) internal successors, (12090), 4196 states have internal predecessors, (12090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 12090 transitions. [2022-03-03 17:37:43,864 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 12090 transitions. Word has length 77 [2022-03-03 17:37:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:43,864 INFO L470 AbstractCegarLoop]: Abstraction has 4197 states and 12090 transitions. [2022-03-03 17:37:43,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:43,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 12090 transitions. [2022-03-03 17:37:43,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:43,869 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:43,869 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:43,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-03 17:37:44,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:44,070 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:44,070 INFO L85 PathProgramCache]: Analyzing trace with hash 190927907, now seen corresponding path program 35 times [2022-03-03 17:37:44,070 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:44,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227122813] [2022-03-03 17:37:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:44,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:44,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:44,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227122813] [2022-03-03 17:37:44,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227122813] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:44,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209294079] [2022-03-03 17:37:44,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:37:44,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:44,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:44,210 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:44,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 17:37:44,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:37:44,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:44,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:37:44,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:44,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:45,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209294079] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:45,083 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:45,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 35 [2022-03-03 17:37:45,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623622435] [2022-03-03 17:37:45,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:45,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:37:45,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:45,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:37:45,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:37:45,084 INFO L87 Difference]: Start difference. First operand 4197 states and 12090 transitions. Second operand has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:47,925 INFO L93 Difference]: Finished difference Result 10164 states and 28356 transitions. [2022-03-03 17:37:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-03-03 17:37:47,926 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:37:47,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:47,941 INFO L225 Difference]: With dead ends: 10164 [2022-03-03 17:37:47,941 INFO L226 Difference]: Without dead ends: 10014 [2022-03-03 17:37:47,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5513 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3441, Invalid=13851, Unknown=0, NotChecked=0, Total=17292 [2022-03-03 17:37:47,943 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 800 mSDsluCounter, 4280 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 4282 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:47,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 4282 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:37:47,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10014 states. [2022-03-03 17:37:48,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10014 to 4685. [2022-03-03 17:37:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 2.8881298035866783) internal successors, (13528), 4684 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 13528 transitions. [2022-03-03 17:37:48,032 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 13528 transitions. Word has length 77 [2022-03-03 17:37:48,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:48,033 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 13528 transitions. [2022-03-03 17:37:48,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:48,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 13528 transitions. [2022-03-03 17:37:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:48,038 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:48,038 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:48,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-03 17:37:48,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-03 17:37:48,239 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:48,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2030934561, now seen corresponding path program 36 times [2022-03-03 17:37:48,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:48,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419424888] [2022-03-03 17:37:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:48,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:48,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:48,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419424888] [2022-03-03 17:37:48,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419424888] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:48,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598228811] [2022-03-03 17:37:48,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:37:48,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:48,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:48,378 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:48,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 17:37:48,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:37:48,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:48,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:37:48,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:48,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:49,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598228811] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:49,116 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:49,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-03-03 17:37:49,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534323716] [2022-03-03 17:37:49,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:49,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:37:49,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:37:49,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:37:49,117 INFO L87 Difference]: Start difference. First operand 4685 states and 13528 transitions. Second operand has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:52,877 INFO L93 Difference]: Finished difference Result 12402 states and 34548 transitions. [2022-03-03 17:37:52,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-03 17:37:52,877 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:37:52,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:52,896 INFO L225 Difference]: With dead ends: 12402 [2022-03-03 17:37:52,896 INFO L226 Difference]: Without dead ends: 12372 [2022-03-03 17:37:52,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8437 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3998, Invalid=19872, Unknown=0, NotChecked=0, Total=23870 [2022-03-03 17:37:52,899 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1286 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:52,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 3975 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:37:52,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12372 states. [2022-03-03 17:37:53,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12372 to 5593. [2022-03-03 17:37:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5593 states, 5592 states have (on average 2.9393776824034337) internal successors, (16437), 5592 states have internal predecessors, (16437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:53,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 16437 transitions. [2022-03-03 17:37:53,046 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 16437 transitions. Word has length 77 [2022-03-03 17:37:53,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:53,046 INFO L470 AbstractCegarLoop]: Abstraction has 5593 states and 16437 transitions. [2022-03-03 17:37:53,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 16437 transitions. [2022-03-03 17:37:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:53,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:53,053 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:53,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 17:37:53,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-03 17:37:53,254 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:53,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:53,254 INFO L85 PathProgramCache]: Analyzing trace with hash 725148921, now seen corresponding path program 37 times [2022-03-03 17:37:53,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:53,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567291797] [2022-03-03 17:37:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:53,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:53,379 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:53,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567291797] [2022-03-03 17:37:53,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567291797] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:53,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926982460] [2022-03-03 17:37:53,379 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:37:53,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:53,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:53,381 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:53,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 17:37:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:53,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:37:53,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:53,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:54,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926982460] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:54,127 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:54,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-03-03 17:37:54,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582036083] [2022-03-03 17:37:54,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:54,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:37:54,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:37:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:37:54,129 INFO L87 Difference]: Start difference. First operand 5593 states and 16437 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:56,684 INFO L93 Difference]: Finished difference Result 9913 states and 27965 transitions. [2022-03-03 17:37:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 17:37:56,685 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:37:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:56,700 INFO L225 Difference]: With dead ends: 9913 [2022-03-03 17:37:56,701 INFO L226 Difference]: Without dead ends: 9865 [2022-03-03 17:37:56,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3747 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2189, Invalid=10021, Unknown=0, NotChecked=0, Total=12210 [2022-03-03 17:37:56,702 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1091 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:56,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 3323 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:37:56,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2022-03-03 17:37:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 5585. [2022-03-03 17:37:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5584 states have (on average 2.9367836676217767) internal successors, (16399), 5584 states have internal predecessors, (16399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 16399 transitions. [2022-03-03 17:37:56,805 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 16399 transitions. Word has length 77 [2022-03-03 17:37:56,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:56,805 INFO L470 AbstractCegarLoop]: Abstraction has 5585 states and 16399 transitions. [2022-03-03 17:37:56,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 16399 transitions. [2022-03-03 17:37:56,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:56,812 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:56,813 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:56,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-03-03 17:37:57,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:57,014 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:37:57,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:37:57,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1428795491, now seen corresponding path program 38 times [2022-03-03 17:37:57,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:37:57,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090044039] [2022-03-03 17:37:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:37:57,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:37:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:37:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:57,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:37:57,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090044039] [2022-03-03 17:37:57,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090044039] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:37:57,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999590541] [2022-03-03 17:37:57,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:37:57,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:37:57,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:37:57,168 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:37:57,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 17:37:57,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:37:57,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:37:57,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:37:57,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:37:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:57,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:37:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:37:58,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999590541] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:37:58,036 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:37:58,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 35 [2022-03-03 17:37:58,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047709117] [2022-03-03 17:37:58,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:37:58,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:37:58,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:37:58,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:37:58,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:37:58,037 INFO L87 Difference]: Start difference. First operand 5585 states and 16399 transitions. Second operand has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:59,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:37:59,726 INFO L93 Difference]: Finished difference Result 9863 states and 28180 transitions. [2022-03-03 17:37:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-03 17:37:59,726 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:37:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:37:59,741 INFO L225 Difference]: With dead ends: 9863 [2022-03-03 17:37:59,741 INFO L226 Difference]: Without dead ends: 9713 [2022-03-03 17:37:59,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1807, Invalid=8293, Unknown=0, NotChecked=0, Total=10100 [2022-03-03 17:37:59,742 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 650 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:37:59,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 3438 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:37:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9713 states. [2022-03-03 17:37:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9713 to 5681. [2022-03-03 17:37:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 5680 states have (on average 2.9350352112676057) internal successors, (16671), 5680 states have internal predecessors, (16671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 16671 transitions. [2022-03-03 17:37:59,836 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 16671 transitions. Word has length 77 [2022-03-03 17:37:59,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:37:59,836 INFO L470 AbstractCegarLoop]: Abstraction has 5681 states and 16671 transitions. [2022-03-03 17:37:59,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:37:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 16671 transitions. [2022-03-03 17:37:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:37:59,867 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:37:59,867 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:37:59,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-03-03 17:38:00,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-03-03 17:38:00,068 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:00,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash -793066977, now seen corresponding path program 39 times [2022-03-03 17:38:00,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:00,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133579101] [2022-03-03 17:38:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:00,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:00,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133579101] [2022-03-03 17:38:00,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133579101] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:00,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272548614] [2022-03-03 17:38:00,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:38:00,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:00,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:00,196 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:00,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 17:38:00,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:38:00,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:00,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:38:00,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:00,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:00,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272548614] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:00,844 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:00,844 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 34 [2022-03-03 17:38:00,844 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575542427] [2022-03-03 17:38:00,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:00,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:38:00,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:00,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:38:00,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:38:00,845 INFO L87 Difference]: Start difference. First operand 5681 states and 16671 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:04,469 INFO L93 Difference]: Finished difference Result 13788 states and 39217 transitions. [2022-03-03 17:38:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-03-03 17:38:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:04,492 INFO L225 Difference]: With dead ends: 13788 [2022-03-03 17:38:04,492 INFO L226 Difference]: Without dead ends: 13758 [2022-03-03 17:38:04,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10436 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4693, Invalid=23363, Unknown=0, NotChecked=0, Total=28056 [2022-03-03 17:38:04,495 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1620 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:04,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 3432 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:38:04,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13758 states. [2022-03-03 17:38:04,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13758 to 7369. [2022-03-03 17:38:04,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7369 states, 7368 states have (on average 2.9729913137893593) internal successors, (21905), 7368 states have internal predecessors, (21905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 21905 transitions. [2022-03-03 17:38:04,684 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 21905 transitions. Word has length 77 [2022-03-03 17:38:04,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:04,684 INFO L470 AbstractCegarLoop]: Abstraction has 7369 states and 21905 transitions. [2022-03-03 17:38:04,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 21905 transitions. [2022-03-03 17:38:04,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:04,696 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:04,696 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:04,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-03-03 17:38:04,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:04,907 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:04,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1963016505, now seen corresponding path program 40 times [2022-03-03 17:38:04,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:04,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466175779] [2022-03-03 17:38:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:04,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:05,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:05,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466175779] [2022-03-03 17:38:05,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466175779] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:05,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552486253] [2022-03-03 17:38:05,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:38:05,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:05,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:05,018 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:05,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 17:38:05,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:38:05,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:05,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:38:05,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:05,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:05,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552486253] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:05,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:05,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-03-03 17:38:05,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461000661] [2022-03-03 17:38:05,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:05,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:38:05,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:38:05,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:38:05,708 INFO L87 Difference]: Start difference. First operand 7369 states and 21905 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:07,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:07,762 INFO L93 Difference]: Finished difference Result 12790 states and 37282 transitions. [2022-03-03 17:38:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-03 17:38:07,763 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:07,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:07,783 INFO L225 Difference]: With dead ends: 12790 [2022-03-03 17:38:07,783 INFO L226 Difference]: Without dead ends: 12742 [2022-03-03 17:38:07,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2896 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1728, Invalid=8172, Unknown=0, NotChecked=0, Total=9900 [2022-03-03 17:38:07,784 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1152 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:07,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 3701 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:38:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12742 states. [2022-03-03 17:38:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12742 to 7909. [2022-03-03 17:38:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7909 states, 7908 states have (on average 2.979514415781487) internal successors, (23562), 7908 states have internal predecessors, (23562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 23562 transitions. [2022-03-03 17:38:07,936 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 23562 transitions. Word has length 77 [2022-03-03 17:38:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:07,937 INFO L470 AbstractCegarLoop]: Abstraction has 7909 states and 23562 transitions. [2022-03-03 17:38:07,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:07,937 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 23562 transitions. [2022-03-03 17:38:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:07,948 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:07,948 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:07,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:08,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:08,163 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:08,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:08,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2104307295, now seen corresponding path program 41 times [2022-03-03 17:38:08,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:08,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141773678] [2022-03-03 17:38:08,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:08,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:08,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:08,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141773678] [2022-03-03 17:38:08,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141773678] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:08,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509502206] [2022-03-03 17:38:08,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:38:08,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:08,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:08,282 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:08,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 17:38:08,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:38:08,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:08,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:38:08,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:08,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:09,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509502206] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:09,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:09,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-03-03 17:38:09,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815305191] [2022-03-03 17:38:09,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:09,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:38:09,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:09,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:38:09,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:38:09,040 INFO L87 Difference]: Start difference. First operand 7909 states and 23562 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:11,050 INFO L93 Difference]: Finished difference Result 13751 states and 39970 transitions. [2022-03-03 17:38:11,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-03 17:38:11,050 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:11,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:11,072 INFO L225 Difference]: With dead ends: 13751 [2022-03-03 17:38:11,073 INFO L226 Difference]: Without dead ends: 13721 [2022-03-03 17:38:11,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1831, Invalid=9725, Unknown=0, NotChecked=0, Total=11556 [2022-03-03 17:38:11,074 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 908 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:11,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 2818 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:38:11,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13721 states. [2022-03-03 17:38:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13721 to 8425. [2022-03-03 17:38:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8425 states, 8424 states have (on average 2.9768518518518516) internal successors, (25077), 8424 states have internal predecessors, (25077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:11,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8425 states to 8425 states and 25077 transitions. [2022-03-03 17:38:11,253 INFO L78 Accepts]: Start accepts. Automaton has 8425 states and 25077 transitions. Word has length 77 [2022-03-03 17:38:11,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:11,253 INFO L470 AbstractCegarLoop]: Abstraction has 8425 states and 25077 transitions. [2022-03-03 17:38:11,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:11,254 INFO L276 IsEmpty]: Start isEmpty. Operand 8425 states and 25077 transitions. [2022-03-03 17:38:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:11,264 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:11,264 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:11,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-03 17:38:11,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-03-03 17:38:11,465 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:11,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash 565423481, now seen corresponding path program 42 times [2022-03-03 17:38:11,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:11,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990049459] [2022-03-03 17:38:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:11,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:11,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:11,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990049459] [2022-03-03 17:38:11,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990049459] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:11,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133541601] [2022-03-03 17:38:11,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:38:11,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:11,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:11,587 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:11,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 17:38:11,655 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:38:11,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:11,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:38:11,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:11,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:12,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133541601] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:12,298 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:12,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-03-03 17:38:12,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238459064] [2022-03-03 17:38:12,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:12,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:38:12,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:12,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:38:12,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:38:12,304 INFO L87 Difference]: Start difference. First operand 8425 states and 25077 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:13,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:13,695 INFO L93 Difference]: Finished difference Result 13035 states and 37943 transitions. [2022-03-03 17:38:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 17:38:13,695 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:13,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:13,718 INFO L225 Difference]: With dead ends: 13035 [2022-03-03 17:38:13,718 INFO L226 Difference]: Without dead ends: 12987 [2022-03-03 17:38:13,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1076, Invalid=5244, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 17:38:13,720 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 824 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:13,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 2424 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:38:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2022-03-03 17:38:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 8073. [2022-03-03 17:38:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8073 states, 8072 states have (on average 2.977824578790882) internal successors, (24037), 8072 states have internal predecessors, (24037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8073 states to 8073 states and 24037 transitions. [2022-03-03 17:38:13,863 INFO L78 Accepts]: Start accepts. Automaton has 8073 states and 24037 transitions. Word has length 77 [2022-03-03 17:38:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:13,864 INFO L470 AbstractCegarLoop]: Abstraction has 8073 states and 24037 transitions. [2022-03-03 17:38:13,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 8073 states and 24037 transitions. [2022-03-03 17:38:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:13,873 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:13,874 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:13,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:14,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-03 17:38:14,074 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:14,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:14,074 INFO L85 PathProgramCache]: Analyzing trace with hash -940442981, now seen corresponding path program 43 times [2022-03-03 17:38:14,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:14,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293691577] [2022-03-03 17:38:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:14,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:14,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:14,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293691577] [2022-03-03 17:38:14,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293691577] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:14,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102417049] [2022-03-03 17:38:14,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:38:14,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:14,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:14,203 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:14,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 17:38:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:14,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:38:14,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:14,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:14,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102417049] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:14,909 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:14,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-03-03 17:38:14,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474359420] [2022-03-03 17:38:14,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:14,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:38:14,910 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:38:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:38:14,910 INFO L87 Difference]: Start difference. First operand 8073 states and 24037 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:15,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:15,592 INFO L93 Difference]: Finished difference Result 9873 states and 29356 transitions. [2022-03-03 17:38:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:38:15,592 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:15,607 INFO L225 Difference]: With dead ends: 9873 [2022-03-03 17:38:15,607 INFO L226 Difference]: Without dead ends: 9837 [2022-03-03 17:38:15,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=477, Invalid=2279, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:38:15,608 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 642 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:15,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1874 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:38:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2022-03-03 17:38:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 8077. [2022-03-03 17:38:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8077 states, 8076 states have (on average 2.9777117384843983) internal successors, (24048), 8076 states have internal predecessors, (24048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8077 states to 8077 states and 24048 transitions. [2022-03-03 17:38:15,722 INFO L78 Accepts]: Start accepts. Automaton has 8077 states and 24048 transitions. Word has length 77 [2022-03-03 17:38:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:15,723 INFO L470 AbstractCegarLoop]: Abstraction has 8077 states and 24048 transitions. [2022-03-03 17:38:15,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 8077 states and 24048 transitions. [2022-03-03 17:38:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:15,732 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:15,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:15,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-03 17:38:15,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-03-03 17:38:15,933 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1822451929, now seen corresponding path program 44 times [2022-03-03 17:38:15,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:15,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377725702] [2022-03-03 17:38:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:16,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:16,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377725702] [2022-03-03 17:38:16,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377725702] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:16,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444061558] [2022-03-03 17:38:16,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:38:16,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:16,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:16,066 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:16,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 17:38:16,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:38:16,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:16,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:38:16,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:16,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:16,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444061558] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:16,775 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:16,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 35 [2022-03-03 17:38:16,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588860624] [2022-03-03 17:38:16,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:16,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:38:16,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:16,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:38:16,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:38:16,776 INFO L87 Difference]: Start difference. First operand 8077 states and 24048 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:19,403 INFO L93 Difference]: Finished difference Result 14182 states and 41355 transitions. [2022-03-03 17:38:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-03-03 17:38:19,403 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:19,426 INFO L225 Difference]: With dead ends: 14182 [2022-03-03 17:38:19,426 INFO L226 Difference]: Without dead ends: 14107 [2022-03-03 17:38:19,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6721 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3704, Invalid=15756, Unknown=0, NotChecked=0, Total=19460 [2022-03-03 17:38:19,429 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 740 mSDsluCounter, 3353 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:19,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 3417 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:38:19,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14107 states. [2022-03-03 17:38:19,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14107 to 8733. [2022-03-03 17:38:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8733 states, 8732 states have (on average 2.977553825011452) internal successors, (26000), 8732 states have internal predecessors, (26000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8733 states to 8733 states and 26000 transitions. [2022-03-03 17:38:19,577 INFO L78 Accepts]: Start accepts. Automaton has 8733 states and 26000 transitions. Word has length 77 [2022-03-03 17:38:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:19,578 INFO L470 AbstractCegarLoop]: Abstraction has 8733 states and 26000 transitions. [2022-03-03 17:38:19,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 8733 states and 26000 transitions. [2022-03-03 17:38:19,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:19,619 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:19,620 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:19,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-03 17:38:19,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:19,820 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash -520158177, now seen corresponding path program 45 times [2022-03-03 17:38:19,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:19,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375695270] [2022-03-03 17:38:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:19,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:19,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:19,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375695270] [2022-03-03 17:38:19,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375695270] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:19,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835945581] [2022-03-03 17:38:19,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:38:19,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:19,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:19,925 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:19,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 17:38:19,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:38:19,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:19,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:38:19,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:20,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:20,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835945581] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:20,581 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:20,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 35 [2022-03-03 17:38:20,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772523425] [2022-03-03 17:38:20,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:20,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:38:20,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:20,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:38:20,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:38:20,582 INFO L87 Difference]: Start difference. First operand 8733 states and 26000 transitions. Second operand has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:24,813 INFO L93 Difference]: Finished difference Result 18496 states and 53581 transitions. [2022-03-03 17:38:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-03 17:38:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:24,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:24,845 INFO L225 Difference]: With dead ends: 18496 [2022-03-03 17:38:24,845 INFO L226 Difference]: Without dead ends: 18466 [2022-03-03 17:38:24,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12734 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5678, Invalid=27994, Unknown=0, NotChecked=0, Total=33672 [2022-03-03 17:38:24,848 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 1517 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:24,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 4363 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:38:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18466 states. [2022-03-03 17:38:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18466 to 11413. [2022-03-03 17:38:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11413 states, 11412 states have (on average 2.997721696459867) internal successors, (34210), 11412 states have internal predecessors, (34210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11413 states to 11413 states and 34210 transitions. [2022-03-03 17:38:25,119 INFO L78 Accepts]: Start accepts. Automaton has 11413 states and 34210 transitions. Word has length 77 [2022-03-03 17:38:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:25,119 INFO L470 AbstractCegarLoop]: Abstraction has 11413 states and 34210 transitions. [2022-03-03 17:38:25,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 11413 states and 34210 transitions. [2022-03-03 17:38:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:25,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:25,133 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:25,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-03 17:38:25,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-03-03 17:38:25,334 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:25,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:25,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2059041991, now seen corresponding path program 46 times [2022-03-03 17:38:25,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:25,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741216931] [2022-03-03 17:38:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:25,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:25,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:25,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741216931] [2022-03-03 17:38:25,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741216931] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:25,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958461730] [2022-03-03 17:38:25,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:38:25,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:25,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:25,466 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:25,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 17:38:25,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:38:25,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:25,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:38:25,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:25,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:26,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958461730] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:26,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:26,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-03-03 17:38:26,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396863217] [2022-03-03 17:38:26,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:26,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:38:26,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:26,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:38:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:38:26,195 INFO L87 Difference]: Start difference. First operand 11413 states and 34210 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:28,504 INFO L93 Difference]: Finished difference Result 17859 states and 52232 transitions. [2022-03-03 17:38:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 17:38:28,504 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:28,535 INFO L225 Difference]: With dead ends: 17859 [2022-03-03 17:38:28,535 INFO L226 Difference]: Without dead ends: 17787 [2022-03-03 17:38:28,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3883 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2109, Invalid=10323, Unknown=0, NotChecked=0, Total=12432 [2022-03-03 17:38:28,536 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 1175 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:28,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 2979 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:38:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17787 states. [2022-03-03 17:38:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17787 to 11969. [2022-03-03 17:38:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11969 states, 11968 states have (on average 3.005932486631016) internal successors, (35975), 11968 states have internal predecessors, (35975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11969 states to 11969 states and 35975 transitions. [2022-03-03 17:38:28,744 INFO L78 Accepts]: Start accepts. Automaton has 11969 states and 35975 transitions. Word has length 77 [2022-03-03 17:38:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:28,744 INFO L470 AbstractCegarLoop]: Abstraction has 11969 states and 35975 transitions. [2022-03-03 17:38:28,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 11969 states and 35975 transitions. [2022-03-03 17:38:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:28,760 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:28,760 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:28,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-03-03 17:38:28,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-03 17:38:28,961 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:28,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:28,961 INFO L85 PathProgramCache]: Analyzing trace with hash 730058843, now seen corresponding path program 47 times [2022-03-03 17:38:28,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:28,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385427260] [2022-03-03 17:38:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:28,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:29,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:29,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385427260] [2022-03-03 17:38:29,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385427260] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:29,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227920381] [2022-03-03 17:38:29,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:38:29,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:29,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:29,084 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:29,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 17:38:29,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:38:29,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:29,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:38:29,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:29,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:29,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227920381] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:29,682 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:29,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-03-03 17:38:29,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195665489] [2022-03-03 17:38:29,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:29,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:38:29,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:29,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:38:29,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:38:29,683 INFO L87 Difference]: Start difference. First operand 11969 states and 35975 transitions. Second operand has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:31,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:31,308 INFO L93 Difference]: Finished difference Result 22953 states and 67933 transitions. [2022-03-03 17:38:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-03 17:38:31,309 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:31,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:31,351 INFO L225 Difference]: With dead ends: 22953 [2022-03-03 17:38:31,351 INFO L226 Difference]: Without dead ends: 22881 [2022-03-03 17:38:31,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3269 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1519, Invalid=8581, Unknown=0, NotChecked=0, Total=10100 [2022-03-03 17:38:31,353 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 650 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:31,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 2387 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:38:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22881 states. [2022-03-03 17:38:31,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22881 to 12161. [2022-03-03 17:38:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12161 states, 12160 states have (on average 3.0045230263157894) internal successors, (36535), 12160 states have internal predecessors, (36535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12161 states to 12161 states and 36535 transitions. [2022-03-03 17:38:31,682 INFO L78 Accepts]: Start accepts. Automaton has 12161 states and 36535 transitions. Word has length 77 [2022-03-03 17:38:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:31,683 INFO L470 AbstractCegarLoop]: Abstraction has 12161 states and 36535 transitions. [2022-03-03 17:38:31,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 12161 states and 36535 transitions. [2022-03-03 17:38:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:31,700 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:31,700 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:31,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-03-03 17:38:31,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:31,901 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:31,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:31,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1998644761, now seen corresponding path program 48 times [2022-03-03 17:38:31,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:31,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317342585] [2022-03-03 17:38:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:31,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:32,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:32,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317342585] [2022-03-03 17:38:32,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317342585] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:32,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298168212] [2022-03-03 17:38:32,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:38:32,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:32,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:32,036 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:32,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 17:38:32,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:38:32,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:32,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:38:32,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:32,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:32,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298168212] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:32,716 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:32,716 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 32 [2022-03-03 17:38:32,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510006723] [2022-03-03 17:38:32,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:32,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:38:32,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:38:32,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:38:32,717 INFO L87 Difference]: Start difference. First operand 12161 states and 36535 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:38,130 INFO L93 Difference]: Finished difference Result 29756 states and 87065 transitions. [2022-03-03 17:38:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-03-03 17:38:38,130 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:38,181 INFO L225 Difference]: With dead ends: 29756 [2022-03-03 17:38:38,181 INFO L226 Difference]: Without dead ends: 29411 [2022-03-03 17:38:38,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23300 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8315, Invalid=49045, Unknown=0, NotChecked=0, Total=57360 [2022-03-03 17:38:38,184 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1590 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:38,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 3472 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1909 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:38:38,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29411 states. [2022-03-03 17:38:38,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29411 to 15768. [2022-03-03 17:38:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15768 states, 15767 states have (on average 2.986427348259022) internal successors, (47087), 15767 states have internal predecessors, (47087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15768 states to 15768 states and 47087 transitions. [2022-03-03 17:38:38,503 INFO L78 Accepts]: Start accepts. Automaton has 15768 states and 47087 transitions. Word has length 77 [2022-03-03 17:38:38,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:38,503 INFO L470 AbstractCegarLoop]: Abstraction has 15768 states and 47087 transitions. [2022-03-03 17:38:38,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15768 states and 47087 transitions. [2022-03-03 17:38:38,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:38,525 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:38,525 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:38,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-03-03 17:38:38,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-03-03 17:38:38,726 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:38,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:38,726 INFO L85 PathProgramCache]: Analyzing trace with hash -72915937, now seen corresponding path program 49 times [2022-03-03 17:38:38,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:38,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063589079] [2022-03-03 17:38:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:38,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:38,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:38,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063589079] [2022-03-03 17:38:38,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063589079] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:38,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26487187] [2022-03-03 17:38:38,851 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:38:38,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:38,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:38,852 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:38,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 17:38:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:38,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:38:38,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:39,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:39,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26487187] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:39,619 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:39,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-03-03 17:38:39,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030969360] [2022-03-03 17:38:39,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:39,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:38:39,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:39,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:38:39,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:38:39,620 INFO L87 Difference]: Start difference. First operand 15768 states and 47087 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:41,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:41,543 INFO L93 Difference]: Finished difference Result 21164 states and 62515 transitions. [2022-03-03 17:38:41,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-03 17:38:41,544 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:41,581 INFO L225 Difference]: With dead ends: 21164 [2022-03-03 17:38:41,581 INFO L226 Difference]: Without dead ends: 21128 [2022-03-03 17:38:41,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3027 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1680, Invalid=8220, Unknown=0, NotChecked=0, Total=9900 [2022-03-03 17:38:41,582 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 817 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:41,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 3435 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:38:41,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21128 states. [2022-03-03 17:38:41,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21128 to 16764. [2022-03-03 17:38:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16764 states, 16763 states have (on average 2.9952872397542207) internal successors, (50210), 16763 states have internal predecessors, (50210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 50210 transitions. [2022-03-03 17:38:41,973 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 50210 transitions. Word has length 77 [2022-03-03 17:38:41,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:41,973 INFO L470 AbstractCegarLoop]: Abstraction has 16764 states and 50210 transitions. [2022-03-03 17:38:41,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 50210 transitions. [2022-03-03 17:38:41,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:41,998 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:41,998 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:42,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-03-03 17:38:42,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:42,199 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:42,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1176482649, now seen corresponding path program 50 times [2022-03-03 17:38:42,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:42,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064694309] [2022-03-03 17:38:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:42,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:42,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:42,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064694309] [2022-03-03 17:38:42,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064694309] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:42,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069653988] [2022-03-03 17:38:42,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:38:42,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:42,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:42,326 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:42,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 17:38:42,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:38:42,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:42,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:38:42,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:42,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:43,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069653988] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:43,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:43,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-03-03 17:38:43,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634548152] [2022-03-03 17:38:43,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:43,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:38:43,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:38:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:38:43,015 INFO L87 Difference]: Start difference. First operand 16764 states and 50210 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:46,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:46,856 INFO L93 Difference]: Finished difference Result 32421 states and 95423 transitions. [2022-03-03 17:38:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-03-03 17:38:46,856 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:46,921 INFO L225 Difference]: With dead ends: 32421 [2022-03-03 17:38:46,921 INFO L226 Difference]: Without dead ends: 32376 [2022-03-03 17:38:46,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12105 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5348, Invalid=25804, Unknown=0, NotChecked=0, Total=31152 [2022-03-03 17:38:46,922 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 1180 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 4054 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:46,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 4054 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:38:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32376 states. [2022-03-03 17:38:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32376 to 19893. [2022-03-03 17:38:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19893 states, 19892 states have (on average 3.001105972250151) internal successors, (59698), 19892 states have internal predecessors, (59698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:47,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19893 states to 19893 states and 59698 transitions. [2022-03-03 17:38:47,481 INFO L78 Accepts]: Start accepts. Automaton has 19893 states and 59698 transitions. Word has length 77 [2022-03-03 17:38:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:47,482 INFO L470 AbstractCegarLoop]: Abstraction has 19893 states and 59698 transitions. [2022-03-03 17:38:47,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand 19893 states and 59698 transitions. [2022-03-03 17:38:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:47,512 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:47,512 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:47,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:47,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-03-03 17:38:47,713 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:47,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1579600833, now seen corresponding path program 51 times [2022-03-03 17:38:47,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:47,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271469765] [2022-03-03 17:38:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:47,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:47,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:47,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271469765] [2022-03-03 17:38:47,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271469765] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:47,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869316286] [2022-03-03 17:38:47,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:38:47,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:47,820 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:47,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 17:38:47,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:38:47,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:47,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:38:47,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:48,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:48,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869316286] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:48,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:48,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 35 [2022-03-03 17:38:48,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677526327] [2022-03-03 17:38:48,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:48,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:38:48,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:48,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:38:48,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:38:48,452 INFO L87 Difference]: Start difference. First operand 19893 states and 59698 transitions. Second operand has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:54,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:54,539 INFO L93 Difference]: Finished difference Result 36557 states and 108426 transitions. [2022-03-03 17:38:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-03-03 17:38:54,540 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:54,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:54,612 INFO L225 Difference]: With dead ends: 36557 [2022-03-03 17:38:54,612 INFO L226 Difference]: Without dead ends: 36509 [2022-03-03 17:38:54,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24666 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=9606, Invalid=51156, Unknown=0, NotChecked=0, Total=60762 [2022-03-03 17:38:54,615 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 2582 mSDsluCounter, 3952 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:54,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2582 Valid, 4052 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:38:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36509 states. [2022-03-03 17:38:55,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36509 to 20333. [2022-03-03 17:38:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20333 states, 20332 states have (on average 2.9956718473342514) internal successors, (60908), 20332 states have internal predecessors, (60908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20333 states to 20333 states and 60908 transitions. [2022-03-03 17:38:55,177 INFO L78 Accepts]: Start accepts. Automaton has 20333 states and 60908 transitions. Word has length 77 [2022-03-03 17:38:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:55,177 INFO L470 AbstractCegarLoop]: Abstraction has 20333 states and 60908 transitions. [2022-03-03 17:38:55,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 20333 states and 60908 transitions. [2022-03-03 17:38:55,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:55,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:55,206 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:55,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:55,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-03-03 17:38:55,406 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:55,406 INFO L85 PathProgramCache]: Analyzing trace with hash 73734371, now seen corresponding path program 52 times [2022-03-03 17:38:55,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:55,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497557273] [2022-03-03 17:38:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:55,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:55,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:55,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497557273] [2022-03-03 17:38:55,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497557273] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:55,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71343603] [2022-03-03 17:38:55,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:38:55,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:55,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:55,523 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:55,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 17:38:55,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:38:55,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:55,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:38:55,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:55,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:38:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:56,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71343603] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:38:56,229 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:38:56,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-03-03 17:38:56,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340129028] [2022-03-03 17:38:56,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:38:56,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:38:56,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:38:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:38:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:38:56,230 INFO L87 Difference]: Start difference. First operand 20333 states and 60908 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:38:58,564 INFO L93 Difference]: Finished difference Result 33381 states and 99082 transitions. [2022-03-03 17:38:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-03 17:38:58,565 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:38:58,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:38:58,635 INFO L225 Difference]: With dead ends: 33381 [2022-03-03 17:38:58,635 INFO L226 Difference]: Without dead ends: 33345 [2022-03-03 17:38:58,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4532 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2306, Invalid=11266, Unknown=0, NotChecked=0, Total=13572 [2022-03-03 17:38:58,637 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1230 mSDsluCounter, 3129 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:38:58,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 3216 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:38:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33345 states. [2022-03-03 17:38:59,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33345 to 20209. [2022-03-03 17:38:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20209 states, 20208 states have (on average 2.9928246239113223) internal successors, (60479), 20208 states have internal predecessors, (60479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20209 states to 20209 states and 60479 transitions. [2022-03-03 17:38:59,144 INFO L78 Accepts]: Start accepts. Automaton has 20209 states and 60479 transitions. Word has length 77 [2022-03-03 17:38:59,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:38:59,144 INFO L470 AbstractCegarLoop]: Abstraction has 20209 states and 60479 transitions. [2022-03-03 17:38:59,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:38:59,144 INFO L276 IsEmpty]: Start isEmpty. Operand 20209 states and 60479 transitions. [2022-03-03 17:38:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:38:59,180 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:38:59,180 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:38:59,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-03 17:38:59,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:59,403 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:38:59,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:38:59,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1917390069, now seen corresponding path program 53 times [2022-03-03 17:38:59,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:38:59,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872412853] [2022-03-03 17:38:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:38:59,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:38:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:38:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:59,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:38:59,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872412853] [2022-03-03 17:38:59,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872412853] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:38:59,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182239733] [2022-03-03 17:38:59,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:38:59,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:38:59,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:38:59,510 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:38:59,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 17:38:59,581 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 17:38:59,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:38:59,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:38:59,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:38:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:38:59,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:00,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182239733] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:00,096 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:00,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 28 [2022-03-03 17:39:00,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974132117] [2022-03-03 17:39:00,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:00,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 17:39:00,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 17:39:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-03-03 17:39:00,097 INFO L87 Difference]: Start difference. First operand 20209 states and 60479 transitions. Second operand has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:02,685 INFO L93 Difference]: Finished difference Result 38522 states and 113262 transitions. [2022-03-03 17:39:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-03 17:39:02,685 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:02,767 INFO L225 Difference]: With dead ends: 38522 [2022-03-03 17:39:02,767 INFO L226 Difference]: Without dead ends: 38474 [2022-03-03 17:39:02,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5568 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2672, Invalid=13840, Unknown=0, NotChecked=0, Total=16512 [2022-03-03 17:39:02,769 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 1067 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:02,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1067 Valid, 3553 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:39:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38474 states. [2022-03-03 17:39:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38474 to 20593. [2022-03-03 17:39:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20593 states, 20592 states have (on average 2.996649184149184) internal successors, (61707), 20592 states have internal predecessors, (61707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20593 states to 20593 states and 61707 transitions. [2022-03-03 17:39:03,416 INFO L78 Accepts]: Start accepts. Automaton has 20593 states and 61707 transitions. Word has length 77 [2022-03-03 17:39:03,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:03,416 INFO L470 AbstractCegarLoop]: Abstraction has 20593 states and 61707 transitions. [2022-03-03 17:39:03,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:03,417 INFO L276 IsEmpty]: Start isEmpty. Operand 20593 states and 61707 transitions. [2022-03-03 17:39:03,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:03,447 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:03,447 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:03,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:03,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:03,648 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:03,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:03,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1473791071, now seen corresponding path program 54 times [2022-03-03 17:39:03,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:03,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217298693] [2022-03-03 17:39:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:03,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:03,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:03,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217298693] [2022-03-03 17:39:03,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217298693] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:03,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238930219] [2022-03-03 17:39:03,772 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:39:03,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:03,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:03,773 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:03,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-03 17:39:03,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:39:03,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:03,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:39:03,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:04,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:04,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238930219] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:04,415 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:04,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-03-03 17:39:04,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522388585] [2022-03-03 17:39:04,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:04,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:39:04,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:04,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:39:04,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:39:04,416 INFO L87 Difference]: Start difference. First operand 20593 states and 61707 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:07,561 INFO L93 Difference]: Finished difference Result 37942 states and 113081 transitions. [2022-03-03 17:39:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-03-03 17:39:07,563 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:07,640 INFO L225 Difference]: With dead ends: 37942 [2022-03-03 17:39:07,640 INFO L226 Difference]: Without dead ends: 37912 [2022-03-03 17:39:07,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7712 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3953, Invalid=18099, Unknown=0, NotChecked=0, Total=22052 [2022-03-03 17:39:07,641 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 989 mSDsluCounter, 3128 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:07,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 3199 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:39:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37912 states. [2022-03-03 17:39:08,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37912 to 27933. [2022-03-03 17:39:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27933 states, 27932 states have (on average 3.0211943290849206) internal successors, (84388), 27932 states have internal predecessors, (84388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27933 states to 27933 states and 84388 transitions. [2022-03-03 17:39:08,383 INFO L78 Accepts]: Start accepts. Automaton has 27933 states and 84388 transitions. Word has length 77 [2022-03-03 17:39:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:08,383 INFO L470 AbstractCegarLoop]: Abstraction has 27933 states and 84388 transitions. [2022-03-03 17:39:08,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 27933 states and 84388 transitions. [2022-03-03 17:39:08,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:08,425 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:08,425 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:08,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:08,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:08,625 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:08,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:08,626 INFO L85 PathProgramCache]: Analyzing trace with hash -65092743, now seen corresponding path program 55 times [2022-03-03 17:39:08,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:08,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514959029] [2022-03-03 17:39:08,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:08,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:08,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:08,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514959029] [2022-03-03 17:39:08,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514959029] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:08,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756516287] [2022-03-03 17:39:08,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:39:08,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:08,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:08,733 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:08,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-03 17:39:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:08,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:39:08,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:09,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:09,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756516287] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:09,408 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:09,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-03-03 17:39:09,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006562390] [2022-03-03 17:39:09,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:09,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:39:09,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:09,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:39:09,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:39:09,409 INFO L87 Difference]: Start difference. First operand 27933 states and 84388 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:11,370 INFO L93 Difference]: Finished difference Result 35041 states and 104489 transitions. [2022-03-03 17:39:11,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-03 17:39:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:11,615 INFO L225 Difference]: With dead ends: 35041 [2022-03-03 17:39:11,616 INFO L226 Difference]: Without dead ends: 34945 [2022-03-03 17:39:11,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3492 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1987, Invalid=9143, Unknown=0, NotChecked=0, Total=11130 [2022-03-03 17:39:11,617 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 1138 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:11,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 2399 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:39:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34945 states. [2022-03-03 17:39:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34945 to 24729. [2022-03-03 17:39:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24729 states, 24728 states have (on average 3.0120106761565837) internal successors, (74481), 24728 states have internal predecessors, (74481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24729 states to 24729 states and 74481 transitions. [2022-03-03 17:39:12,203 INFO L78 Accepts]: Start accepts. Automaton has 24729 states and 74481 transitions. Word has length 77 [2022-03-03 17:39:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:12,203 INFO L470 AbstractCegarLoop]: Abstraction has 24729 states and 74481 transitions. [2022-03-03 17:39:12,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 24729 states and 74481 transitions. [2022-03-03 17:39:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:12,236 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:12,236 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:12,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-03-03 17:39:12,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-03 17:39:12,437 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1921033311, now seen corresponding path program 56 times [2022-03-03 17:39:12,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:12,438 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613351843] [2022-03-03 17:39:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:12,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:12,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:12,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613351843] [2022-03-03 17:39:12,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613351843] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:12,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905983601] [2022-03-03 17:39:12,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:39:12,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:12,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:12,566 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:12,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-03 17:39:12,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:39:12,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:12,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:39:12,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:13,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:13,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905983601] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:13,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:13,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-03-03 17:39:13,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104720345] [2022-03-03 17:39:13,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:13,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:39:13,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:13,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:39:13,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:39:13,298 INFO L87 Difference]: Start difference. First operand 24729 states and 74481 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:14,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:14,779 INFO L93 Difference]: Finished difference Result 29827 states and 89157 transitions. [2022-03-03 17:39:14,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:39:14,779 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:14,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:14,838 INFO L225 Difference]: With dead ends: 29827 [2022-03-03 17:39:14,838 INFO L226 Difference]: Without dead ends: 29755 [2022-03-03 17:39:14,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1974 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1188, Invalid=5454, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:39:14,839 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 764 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:14,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 2785 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:39:14,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29755 states. [2022-03-03 17:39:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29755 to 24853. [2022-03-03 17:39:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24853 states, 24852 states have (on average 3.011186222436826) internal successors, (74834), 24852 states have internal predecessors, (74834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24853 states to 24853 states and 74834 transitions. [2022-03-03 17:39:15,368 INFO L78 Accepts]: Start accepts. Automaton has 24853 states and 74834 transitions. Word has length 77 [2022-03-03 17:39:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:15,368 INFO L470 AbstractCegarLoop]: Abstraction has 24853 states and 74834 transitions. [2022-03-03 17:39:15,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 24853 states and 74834 transitions. [2022-03-03 17:39:15,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:15,405 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:15,405 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:15,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-03-03 17:39:15,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-03 17:39:15,606 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:15,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:15,606 INFO L85 PathProgramCache]: Analyzing trace with hash 817466599, now seen corresponding path program 57 times [2022-03-03 17:39:15,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:15,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994363150] [2022-03-03 17:39:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:15,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:15,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:15,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994363150] [2022-03-03 17:39:15,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994363150] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:15,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856982565] [2022-03-03 17:39:15,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:39:15,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:15,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:15,706 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:15,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-03 17:39:15,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:39:15,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:15,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:39:15,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:16,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:16,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856982565] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:16,356 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:16,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2022-03-03 17:39:16,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265528760] [2022-03-03 17:39:16,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:16,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 17:39:16,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:16,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 17:39:16,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:39:16,357 INFO L87 Difference]: Start difference. First operand 24853 states and 74834 transitions. Second operand has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:21,017 INFO L93 Difference]: Finished difference Result 43877 states and 130351 transitions. [2022-03-03 17:39:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-03-03 17:39:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:21,105 INFO L225 Difference]: With dead ends: 43877 [2022-03-03 17:39:21,105 INFO L226 Difference]: Without dead ends: 43787 [2022-03-03 17:39:21,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17610 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=9170, Invalid=35562, Unknown=0, NotChecked=0, Total=44732 [2022-03-03 17:39:21,109 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1903 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:21,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1903 Valid, 3065 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:39:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43787 states. [2022-03-03 17:39:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43787 to 26781. [2022-03-03 17:39:21,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26781 states, 26780 states have (on average 3.0019417475728156) internal successors, (80392), 26780 states have internal predecessors, (80392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26781 states to 26781 states and 80392 transitions. [2022-03-03 17:39:21,725 INFO L78 Accepts]: Start accepts. Automaton has 26781 states and 80392 transitions. Word has length 77 [2022-03-03 17:39:21,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:21,725 INFO L470 AbstractCegarLoop]: Abstraction has 26781 states and 80392 transitions. [2022-03-03 17:39:21,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand 26781 states and 80392 transitions. [2022-03-03 17:39:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:21,764 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:21,765 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:21,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-03-03 17:39:21,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:21,965 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:21,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:21,965 INFO L85 PathProgramCache]: Analyzing trace with hash -721417215, now seen corresponding path program 58 times [2022-03-03 17:39:21,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:21,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872088471] [2022-03-03 17:39:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:21,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:22,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:22,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872088471] [2022-03-03 17:39:22,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872088471] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:22,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115190735] [2022-03-03 17:39:22,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:39:22,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:22,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:22,077 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:22,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-03 17:39:22,148 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:39:22,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:22,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:39:22,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:22,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:22,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115190735] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:22,650 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:22,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-03-03 17:39:22,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392476334] [2022-03-03 17:39:22,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:22,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:39:22,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:39:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:39:22,651 INFO L87 Difference]: Start difference. First operand 26781 states and 80392 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:24,669 INFO L93 Difference]: Finished difference Result 40700 states and 121546 transitions. [2022-03-03 17:39:24,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-03 17:39:24,670 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:24,756 INFO L225 Difference]: With dead ends: 40700 [2022-03-03 17:39:24,756 INFO L226 Difference]: Without dead ends: 40628 [2022-03-03 17:39:24,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2453, Invalid=9319, Unknown=0, NotChecked=0, Total=11772 [2022-03-03 17:39:24,757 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1129 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:24,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 2221 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:39:24,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40628 states. [2022-03-03 17:39:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40628 to 26557. [2022-03-03 17:39:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26557 states, 26556 states have (on average 3.0055731284832055) internal successors, (79816), 26556 states have internal predecessors, (79816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26557 states to 26557 states and 79816 transitions. [2022-03-03 17:39:25,356 INFO L78 Accepts]: Start accepts. Automaton has 26557 states and 79816 transitions. Word has length 77 [2022-03-03 17:39:25,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:25,356 INFO L470 AbstractCegarLoop]: Abstraction has 26557 states and 79816 transitions. [2022-03-03 17:39:25,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:25,356 INFO L276 IsEmpty]: Start isEmpty. Operand 26557 states and 79816 transitions. [2022-03-03 17:39:25,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:25,395 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:25,395 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:25,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-03-03 17:39:25,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:25,596 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:25,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2067683619, now seen corresponding path program 59 times [2022-03-03 17:39:25,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:25,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368624015] [2022-03-03 17:39:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:25,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:25,695 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:25,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368624015] [2022-03-03 17:39:25,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368624015] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:25,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216503210] [2022-03-03 17:39:25,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:39:25,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:25,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:25,696 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:25,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-03 17:39:25,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:39:25,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:25,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:39:25,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:26,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:26,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216503210] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:26,313 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:26,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-03-03 17:39:26,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16373550] [2022-03-03 17:39:26,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:26,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:39:26,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:39:26,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:39:26,314 INFO L87 Difference]: Start difference. First operand 26557 states and 79816 transitions. Second operand has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:29,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:29,205 INFO L93 Difference]: Finished difference Result 49127 states and 146632 transitions. [2022-03-03 17:39:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-03-03 17:39:29,206 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:29,310 INFO L225 Difference]: With dead ends: 49127 [2022-03-03 17:39:29,310 INFO L226 Difference]: Without dead ends: 49055 [2022-03-03 17:39:29,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7621 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3626, Invalid=17544, Unknown=0, NotChecked=0, Total=21170 [2022-03-03 17:39:29,313 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1109 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:29,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 2200 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:39:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49055 states. [2022-03-03 17:39:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49055 to 29053. [2022-03-03 17:39:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29053 states, 29052 states have (on average 3.0139060994079583) internal successors, (87560), 29052 states have internal predecessors, (87560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29053 states to 29053 states and 87560 transitions. [2022-03-03 17:39:30,128 INFO L78 Accepts]: Start accepts. Automaton has 29053 states and 87560 transitions. Word has length 77 [2022-03-03 17:39:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:30,128 INFO L470 AbstractCegarLoop]: Abstraction has 29053 states and 87560 transitions. [2022-03-03 17:39:30,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 29053 states and 87560 transitions. [2022-03-03 17:39:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:30,173 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:30,173 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:30,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:30,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:30,374 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:30,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:30,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1768261465, now seen corresponding path program 60 times [2022-03-03 17:39:30,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:30,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567240468] [2022-03-03 17:39:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:30,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:30,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:30,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567240468] [2022-03-03 17:39:30,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567240468] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:30,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571749211] [2022-03-03 17:39:30,493 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:39:30,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:30,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:30,495 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:30,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-03 17:39:30,572 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:39:30,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:30,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:39:30,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:30,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:31,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571749211] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:31,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:31,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 36 [2022-03-03 17:39:31,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415943684] [2022-03-03 17:39:31,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:31,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 17:39:31,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:31,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 17:39:31,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:39:31,208 INFO L87 Difference]: Start difference. First operand 29053 states and 87560 transitions. Second operand has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:33,909 INFO L93 Difference]: Finished difference Result 47531 states and 141242 transitions. [2022-03-03 17:39:33,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-03 17:39:33,909 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:33,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:34,005 INFO L225 Difference]: With dead ends: 47531 [2022-03-03 17:39:34,006 INFO L226 Difference]: Without dead ends: 47366 [2022-03-03 17:39:34,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5531 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2843, Invalid=14187, Unknown=0, NotChecked=0, Total=17030 [2022-03-03 17:39:34,008 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 892 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:34,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 3699 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:39:34,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47366 states. [2022-03-03 17:39:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47366 to 32281. [2022-03-03 17:39:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32281 states, 32280 states have (on average 3.000650557620818) internal successors, (96861), 32280 states have internal predecessors, (96861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32281 states to 32281 states and 96861 transitions. [2022-03-03 17:39:34,830 INFO L78 Accepts]: Start accepts. Automaton has 32281 states and 96861 transitions. Word has length 77 [2022-03-03 17:39:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:34,830 INFO L470 AbstractCegarLoop]: Abstraction has 32281 states and 96861 transitions. [2022-03-03 17:39:34,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 32281 states and 96861 transitions. [2022-03-03 17:39:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:34,877 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:34,878 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:34,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-03-03 17:39:35,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:35,079 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:35,079 INFO L85 PathProgramCache]: Analyzing trace with hash 157467359, now seen corresponding path program 61 times [2022-03-03 17:39:35,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:35,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901185501] [2022-03-03 17:39:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:35,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:35,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:35,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901185501] [2022-03-03 17:39:35,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901185501] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:35,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869083470] [2022-03-03 17:39:35,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:39:35,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:35,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:35,190 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:35,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-03 17:39:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:35,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:39:35,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:35,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:35,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869083470] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:35,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:35,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 31 [2022-03-03 17:39:35,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340411530] [2022-03-03 17:39:35,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:35,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:39:35,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:39:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:39:35,798 INFO L87 Difference]: Start difference. First operand 32281 states and 96861 transitions. Second operand has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:36,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:36,907 INFO L93 Difference]: Finished difference Result 36443 states and 108951 transitions. [2022-03-03 17:39:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:39:36,908 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:36,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:36,983 INFO L225 Difference]: With dead ends: 36443 [2022-03-03 17:39:36,983 INFO L226 Difference]: Without dead ends: 36371 [2022-03-03 17:39:36,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=813, Invalid=3879, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 17:39:36,984 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 656 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:36,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1751 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:39:37,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36371 states. [2022-03-03 17:39:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36371 to 32553. [2022-03-03 17:39:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32553 states, 32552 states have (on average 2.998924797247481) internal successors, (97621), 32552 states have internal predecessors, (97621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32553 states to 32553 states and 97621 transitions. [2022-03-03 17:39:37,746 INFO L78 Accepts]: Start accepts. Automaton has 32553 states and 97621 transitions. Word has length 77 [2022-03-03 17:39:37,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:37,746 INFO L470 AbstractCegarLoop]: Abstraction has 32553 states and 97621 transitions. [2022-03-03 17:39:37,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 32553 states and 97621 transitions. [2022-03-03 17:39:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:37,796 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:37,796 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:37,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-03 17:39:37,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-03-03 17:39:37,997 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:37,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:37,997 INFO L85 PathProgramCache]: Analyzing trace with hash 304117667, now seen corresponding path program 62 times [2022-03-03 17:39:37,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:37,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223425421] [2022-03-03 17:39:37,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:37,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:38,096 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:38,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223425421] [2022-03-03 17:39:38,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223425421] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:38,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397428735] [2022-03-03 17:39:38,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:39:38,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:38,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:38,098 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:38,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-03 17:39:38,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:39:38,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:38,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:39:38,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:38,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:38,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397428735] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:38,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:38,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-03-03 17:39:38,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435260099] [2022-03-03 17:39:38,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:38,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:39:38,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:39:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:39:38,774 INFO L87 Difference]: Start difference. First operand 32553 states and 97621 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:40,388 INFO L93 Difference]: Finished difference Result 46148 states and 138061 transitions. [2022-03-03 17:39:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-03 17:39:40,388 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:40,474 INFO L225 Difference]: With dead ends: 46148 [2022-03-03 17:39:40,474 INFO L226 Difference]: Without dead ends: 46076 [2022-03-03 17:39:40,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2221 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1403, Invalid=6253, Unknown=0, NotChecked=0, Total=7656 [2022-03-03 17:39:40,475 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 886 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:40,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 1967 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:39:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46076 states. [2022-03-03 17:39:41,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46076 to 33461. [2022-03-03 17:39:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33461 states, 33460 states have (on average 3.012253436939629) internal successors, (100790), 33460 states have internal predecessors, (100790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:41,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 100790 transitions. [2022-03-03 17:39:41,355 INFO L78 Accepts]: Start accepts. Automaton has 33461 states and 100790 transitions. Word has length 77 [2022-03-03 17:39:41,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:41,355 INFO L470 AbstractCegarLoop]: Abstraction has 33461 states and 100790 transitions. [2022-03-03 17:39:41,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:41,355 INFO L276 IsEmpty]: Start isEmpty. Operand 33461 states and 100790 transitions. [2022-03-03 17:39:41,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:41,404 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:41,405 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:41,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:41,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:41,606 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2147193931, now seen corresponding path program 63 times [2022-03-03 17:39:41,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:41,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890206865] [2022-03-03 17:39:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:41,826 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:41,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890206865] [2022-03-03 17:39:41,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890206865] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:41,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312437390] [2022-03-03 17:39:41,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:39:41,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:41,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:41,827 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:41,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-03 17:39:41,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 17:39:41,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:41,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:39:41,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:42,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:42,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312437390] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:42,495 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:42,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2022-03-03 17:39:42,495 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607207582] [2022-03-03 17:39:42,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:42,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:39:42,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:42,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:39:42,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:39:42,496 INFO L87 Difference]: Start difference. First operand 33461 states and 100790 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:44,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:44,627 INFO L93 Difference]: Finished difference Result 45082 states and 134091 transitions. [2022-03-03 17:39:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 17:39:44,627 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:44,726 INFO L225 Difference]: With dead ends: 45082 [2022-03-03 17:39:44,726 INFO L226 Difference]: Without dead ends: 44986 [2022-03-03 17:39:44,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4182 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2256, Invalid=10854, Unknown=0, NotChecked=0, Total=13110 [2022-03-03 17:39:44,728 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 873 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:44,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2698 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:39:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44986 states. [2022-03-03 17:39:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44986 to 33505. [2022-03-03 17:39:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33505 states, 33504 states have (on average 3.01143147086915) internal successors, (100895), 33504 states have internal predecessors, (100895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33505 states to 33505 states and 100895 transitions. [2022-03-03 17:39:45,466 INFO L78 Accepts]: Start accepts. Automaton has 33505 states and 100895 transitions. Word has length 77 [2022-03-03 17:39:45,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:45,466 INFO L470 AbstractCegarLoop]: Abstraction has 33505 states and 100895 transitions. [2022-03-03 17:39:45,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 33505 states and 100895 transitions. [2022-03-03 17:39:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:45,514 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:45,514 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:45,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-03-03 17:39:45,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-03-03 17:39:45,715 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:45,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:45,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2048811427, now seen corresponding path program 64 times [2022-03-03 17:39:45,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:45,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054774359] [2022-03-03 17:39:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:45,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:45,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:45,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054774359] [2022-03-03 17:39:45,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054774359] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:45,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818118078] [2022-03-03 17:39:45,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:39:45,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:45,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:45,979 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:45,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-03 17:39:46,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:39:46,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:46,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:39:46,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:46,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:46,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818118078] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:46,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:46,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 38 [2022-03-03 17:39:46,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855013490] [2022-03-03 17:39:46,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:46,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:39:46,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:39:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:39:46,842 INFO L87 Difference]: Start difference. First operand 33505 states and 100895 transitions. Second operand has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:49,481 INFO L93 Difference]: Finished difference Result 58794 states and 174283 transitions. [2022-03-03 17:39:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-03 17:39:49,481 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:49,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:49,604 INFO L225 Difference]: With dead ends: 58794 [2022-03-03 17:39:49,605 INFO L226 Difference]: Without dead ends: 58614 [2022-03-03 17:39:49,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6726 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3346, Invalid=15560, Unknown=0, NotChecked=0, Total=18906 [2022-03-03 17:39:49,606 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1121 mSDsluCounter, 3386 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:49,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 3386 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:39:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58614 states. [2022-03-03 17:39:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58614 to 41717. [2022-03-03 17:39:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41717 states, 41716 states have (on average 3.0048422667561607) internal successors, (125350), 41716 states have internal predecessors, (125350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41717 states to 41717 states and 125350 transitions. [2022-03-03 17:39:50,598 INFO L78 Accepts]: Start accepts. Automaton has 41717 states and 125350 transitions. Word has length 77 [2022-03-03 17:39:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:50,598 INFO L470 AbstractCegarLoop]: Abstraction has 41717 states and 125350 transitions. [2022-03-03 17:39:50,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 41717 states and 125350 transitions. [2022-03-03 17:39:50,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:50,839 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:50,840 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:50,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:51,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-03 17:39:51,056 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:51,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:51,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1711934855, now seen corresponding path program 65 times [2022-03-03 17:39:51,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:51,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130283334] [2022-03-03 17:39:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:51,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:51,185 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:51,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130283334] [2022-03-03 17:39:51,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130283334] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:51,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937985295] [2022-03-03 17:39:51,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:39:51,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:51,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:51,187 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:51,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-03 17:39:51,268 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 17:39:51,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:51,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:39:51,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:51,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:51,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937985295] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:51,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:51,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 35 [2022-03-03 17:39:51,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760963150] [2022-03-03 17:39:51,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:51,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:39:51,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:39:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:39:51,985 INFO L87 Difference]: Start difference. First operand 41717 states and 125350 transitions. Second operand has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:54,134 INFO L93 Difference]: Finished difference Result 55045 states and 162992 transitions. [2022-03-03 17:39:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-03 17:39:54,134 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:54,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:54,344 INFO L225 Difference]: With dead ends: 55045 [2022-03-03 17:39:54,345 INFO L226 Difference]: Without dead ends: 54949 [2022-03-03 17:39:54,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4967 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2715, Invalid=12047, Unknown=0, NotChecked=0, Total=14762 [2022-03-03 17:39:54,345 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 976 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:54,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 2420 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:39:54,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54949 states. [2022-03-03 17:39:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54949 to 40477. [2022-03-03 17:39:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40477 states, 40476 states have (on average 3.004150607767566) internal successors, (121596), 40476 states have internal predecessors, (121596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40477 states to 40477 states and 121596 transitions. [2022-03-03 17:39:55,290 INFO L78 Accepts]: Start accepts. Automaton has 40477 states and 121596 transitions. Word has length 77 [2022-03-03 17:39:55,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:55,290 INFO L470 AbstractCegarLoop]: Abstraction has 40477 states and 121596 transitions. [2022-03-03 17:39:55,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand 40477 states and 121596 transitions. [2022-03-03 17:39:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:55,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:55,352 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:55,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-03-03 17:39:55,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-03-03 17:39:55,553 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:55,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:55,553 INFO L85 PathProgramCache]: Analyzing trace with hash 921558363, now seen corresponding path program 66 times [2022-03-03 17:39:55,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:55,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011932816] [2022-03-03 17:39:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:55,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:55,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:55,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011932816] [2022-03-03 17:39:55,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011932816] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:55,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394658804] [2022-03-03 17:39:55,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:39:55,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:55,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:55,674 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:39:55,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-03 17:39:55,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:39:55,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:55,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:39:55,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:56,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:56,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394658804] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:56,515 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:56,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2022-03-03 17:39:56,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680839119] [2022-03-03 17:39:56,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:56,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:39:56,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:56,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:39:56,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:39:56,516 INFO L87 Difference]: Start difference. First operand 40477 states and 121596 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:58,321 INFO L93 Difference]: Finished difference Result 53143 states and 159305 transitions. [2022-03-03 17:39:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 17:39:58,322 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:39:58,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:58,515 INFO L225 Difference]: With dead ends: 53143 [2022-03-03 17:39:58,516 INFO L226 Difference]: Without dead ends: 52963 [2022-03-03 17:39:58,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2670 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1166, Invalid=6844, Unknown=0, NotChecked=0, Total=8010 [2022-03-03 17:39:58,516 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 532 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:58,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 2799 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:39:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52963 states. [2022-03-03 17:39:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52963 to 46293. [2022-03-03 17:39:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46293 states, 46292 states have (on average 3.011017022379677) internal successors, (139386), 46292 states have internal predecessors, (139386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46293 states to 46293 states and 139386 transitions. [2022-03-03 17:39:59,487 INFO L78 Accepts]: Start accepts. Automaton has 46293 states and 139386 transitions. Word has length 77 [2022-03-03 17:39:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:59,487 INFO L470 AbstractCegarLoop]: Abstraction has 46293 states and 139386 transitions. [2022-03-03 17:39:59,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 46293 states and 139386 transitions. [2022-03-03 17:39:59,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:39:59,730 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:59,730 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:59,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:59,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-03 17:39:59,953 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:39:59,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:59,954 INFO L85 PathProgramCache]: Analyzing trace with hash 265233891, now seen corresponding path program 67 times [2022-03-03 17:39:59,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:59,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936229642] [2022-03-03 17:39:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:59,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:00,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:00,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936229642] [2022-03-03 17:40:00,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936229642] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:00,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281823930] [2022-03-03 17:40:00,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:40:00,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:00,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:00,064 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:00,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-03 17:40:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:00,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:40:00,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:00,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:00,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281823930] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:00,703 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:00,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-03-03 17:40:00,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370895488] [2022-03-03 17:40:00,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:00,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:40:00,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:00,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:40:00,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:40:00,705 INFO L87 Difference]: Start difference. First operand 46293 states and 139386 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:02,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:02,835 INFO L93 Difference]: Finished difference Result 58970 states and 176096 transitions. [2022-03-03 17:40:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-03 17:40:02,836 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:02,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:02,995 INFO L225 Difference]: With dead ends: 58970 [2022-03-03 17:40:02,995 INFO L226 Difference]: Without dead ends: 58874 [2022-03-03 17:40:02,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3789 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1886, Invalid=9244, Unknown=0, NotChecked=0, Total=11130 [2022-03-03 17:40:02,996 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 763 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:02,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 2375 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:40:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58874 states. [2022-03-03 17:40:04,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58874 to 49917. [2022-03-03 17:40:04,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49917 states, 49916 states have (on average 3.020915137430884) internal successors, (150792), 49916 states have internal predecessors, (150792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49917 states to 49917 states and 150792 transitions. [2022-03-03 17:40:04,308 INFO L78 Accepts]: Start accepts. Automaton has 49917 states and 150792 transitions. Word has length 77 [2022-03-03 17:40:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:04,308 INFO L470 AbstractCegarLoop]: Abstraction has 49917 states and 150792 transitions. [2022-03-03 17:40:04,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 49917 states and 150792 transitions. [2022-03-03 17:40:04,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:04,381 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:04,381 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:04,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-03-03 17:40:04,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:04,582 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:04,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2108889589, now seen corresponding path program 68 times [2022-03-03 17:40:04,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:04,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607290689] [2022-03-03 17:40:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:04,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:04,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:04,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607290689] [2022-03-03 17:40:04,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607290689] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:04,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175044775] [2022-03-03 17:40:04,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:40:04,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:04,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:04,700 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:04,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-03 17:40:04,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:40:04,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:04,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:40:04,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:05,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:05,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175044775] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:05,476 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:05,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-03-03 17:40:05,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247321774] [2022-03-03 17:40:05,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:05,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:40:05,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:05,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:40:05,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:40:05,477 INFO L87 Difference]: Start difference. First operand 49917 states and 150792 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:06,752 INFO L93 Difference]: Finished difference Result 52965 states and 159059 transitions. [2022-03-03 17:40:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 17:40:06,753 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:06,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:06,871 INFO L225 Difference]: With dead ends: 52965 [2022-03-03 17:40:06,871 INFO L226 Difference]: Without dead ends: 52845 [2022-03-03 17:40:06,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=985, Invalid=4565, Unknown=0, NotChecked=0, Total=5550 [2022-03-03 17:40:06,872 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 625 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:06,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 1858 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:40:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52845 states. [2022-03-03 17:40:07,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52845 to 50573. [2022-03-03 17:40:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50573 states, 50572 states have (on average 3.0204856442300088) internal successors, (152752), 50572 states have internal predecessors, (152752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50573 states to 50573 states and 152752 transitions. [2022-03-03 17:40:08,180 INFO L78 Accepts]: Start accepts. Automaton has 50573 states and 152752 transitions. Word has length 77 [2022-03-03 17:40:08,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:08,180 INFO L470 AbstractCegarLoop]: Abstraction has 50573 states and 152752 transitions. [2022-03-03 17:40:08,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:08,180 INFO L276 IsEmpty]: Start isEmpty. Operand 50573 states and 152752 transitions. [2022-03-03 17:40:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:08,262 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:08,262 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:08,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:08,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:08,462 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:08,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1704232665, now seen corresponding path program 69 times [2022-03-03 17:40:08,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:08,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694483644] [2022-03-03 17:40:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:08,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:08,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:08,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694483644] [2022-03-03 17:40:08,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694483644] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:08,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083885773] [2022-03-03 17:40:08,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:40:08,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:08,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:08,620 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:08,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-03 17:40:08,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:40:08,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:08,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:40:08,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:08,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:09,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083885773] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:09,253 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:09,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 12] total 32 [2022-03-03 17:40:09,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333615923] [2022-03-03 17:40:09,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:09,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:40:09,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:09,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:40:09,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:40:09,254 INFO L87 Difference]: Start difference. First operand 50573 states and 152752 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:11,637 INFO L93 Difference]: Finished difference Result 55679 states and 167021 transitions. [2022-03-03 17:40:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-03 17:40:11,637 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:11,757 INFO L225 Difference]: With dead ends: 55679 [2022-03-03 17:40:11,758 INFO L226 Difference]: Without dead ends: 55619 [2022-03-03 17:40:11,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4321 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1900, Invalid=10756, Unknown=0, NotChecked=0, Total=12656 [2022-03-03 17:40:11,758 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 696 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:11,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2830 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:40:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55619 states. [2022-03-03 17:40:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55619 to 52498. [2022-03-03 17:40:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52498 states, 52497 states have (on average 3.0245918814408443) internal successors, (158782), 52497 states have internal predecessors, (158782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52498 states to 52498 states and 158782 transitions. [2022-03-03 17:40:12,900 INFO L78 Accepts]: Start accepts. Automaton has 52498 states and 158782 transitions. Word has length 77 [2022-03-03 17:40:12,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:12,901 INFO L470 AbstractCegarLoop]: Abstraction has 52498 states and 158782 transitions. [2022-03-03 17:40:12,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 52498 states and 158782 transitions. [2022-03-03 17:40:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:13,239 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:13,248 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:13,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:13,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:13,449 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1979648995, now seen corresponding path program 70 times [2022-03-03 17:40:13,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:13,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836933607] [2022-03-03 17:40:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:13,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:13,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836933607] [2022-03-03 17:40:13,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836933607] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:13,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346544067] [2022-03-03 17:40:13,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:40:13,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:13,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:13,617 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:13,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-03 17:40:13,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:40:13,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:13,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:40:13,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:14,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:14,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346544067] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:14,349 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:14,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-03-03 17:40:14,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610852881] [2022-03-03 17:40:14,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:14,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 17:40:14,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:14,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 17:40:14,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:40:14,350 INFO L87 Difference]: Start difference. First operand 52498 states and 158782 transitions. Second operand has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:16,507 INFO L93 Difference]: Finished difference Result 56930 states and 170437 transitions. [2022-03-03 17:40:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-03 17:40:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:16,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:16,640 INFO L225 Difference]: With dead ends: 56930 [2022-03-03 17:40:16,641 INFO L226 Difference]: Without dead ends: 56720 [2022-03-03 17:40:16,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4142 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2363, Invalid=9847, Unknown=0, NotChecked=0, Total=12210 [2022-03-03 17:40:16,642 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 809 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:16,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2513 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:40:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56720 states. [2022-03-03 17:40:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56720 to 50461. [2022-03-03 17:40:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50461 states, 50460 states have (on average 3.021799445105034) internal successors, (152480), 50460 states have internal predecessors, (152480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50461 states to 50461 states and 152480 transitions. [2022-03-03 17:40:17,883 INFO L78 Accepts]: Start accepts. Automaton has 50461 states and 152480 transitions. Word has length 77 [2022-03-03 17:40:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:17,883 INFO L470 AbstractCegarLoop]: Abstraction has 50461 states and 152480 transitions. [2022-03-03 17:40:17,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 50461 states and 152480 transitions. [2022-03-03 17:40:17,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:17,964 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:17,964 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:17,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-03-03 17:40:18,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-03-03 17:40:18,165 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:18,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:18,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1781097287, now seen corresponding path program 71 times [2022-03-03 17:40:18,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:18,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718798349] [2022-03-03 17:40:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:18,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:18,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:18,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718798349] [2022-03-03 17:40:18,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718798349] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:18,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818990840] [2022-03-03 17:40:18,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:40:18,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:18,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:18,281 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:18,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-03 17:40:18,362 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:40:18,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:18,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:40:18,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:18,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:18,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818990840] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:18,870 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:18,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-03-03 17:40:18,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516945039] [2022-03-03 17:40:18,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:18,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:40:18,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:40:18,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:40:18,872 INFO L87 Difference]: Start difference. First operand 50461 states and 152480 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:20,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:20,285 INFO L93 Difference]: Finished difference Result 65246 states and 194541 transitions. [2022-03-03 17:40:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 17:40:20,286 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:20,454 INFO L225 Difference]: With dead ends: 65246 [2022-03-03 17:40:20,455 INFO L226 Difference]: Without dead ends: 65198 [2022-03-03 17:40:20,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=792, Invalid=4178, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 17:40:20,456 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 622 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:20,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 1878 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:40:20,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65198 states. [2022-03-03 17:40:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65198 to 50125. [2022-03-03 17:40:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50125 states, 50124 states have (on average 3.022025377064879) internal successors, (151476), 50124 states have internal predecessors, (151476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50125 states to 50125 states and 151476 transitions. [2022-03-03 17:40:21,848 INFO L78 Accepts]: Start accepts. Automaton has 50125 states and 151476 transitions. Word has length 77 [2022-03-03 17:40:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:21,849 INFO L470 AbstractCegarLoop]: Abstraction has 50125 states and 151476 transitions. [2022-03-03 17:40:21,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 50125 states and 151476 transitions. [2022-03-03 17:40:21,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:21,939 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:21,939 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:21,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-03-03 17:40:22,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:22,140 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash -401938913, now seen corresponding path program 72 times [2022-03-03 17:40:22,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:22,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704896357] [2022-03-03 17:40:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:22,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:22,251 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:22,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704896357] [2022-03-03 17:40:22,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704896357] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:22,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838297185] [2022-03-03 17:40:22,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:40:22,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:22,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:22,252 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:22,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-03 17:40:22,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:40:22,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:22,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:40:22,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:22,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:23,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838297185] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:23,142 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:23,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-03-03 17:40:23,142 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838509774] [2022-03-03 17:40:23,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:23,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:40:23,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:23,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:40:23,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:40:23,143 INFO L87 Difference]: Start difference. First operand 50125 states and 151476 transitions. Second operand has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:24,993 INFO L93 Difference]: Finished difference Result 55334 states and 166142 transitions. [2022-03-03 17:40:24,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-03 17:40:24,993 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:25,122 INFO L225 Difference]: With dead ends: 55334 [2022-03-03 17:40:25,123 INFO L226 Difference]: Without dead ends: 55304 [2022-03-03 17:40:25,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3103 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1555, Invalid=7565, Unknown=0, NotChecked=0, Total=9120 [2022-03-03 17:40:25,123 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 590 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:25,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 2009 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:40:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55304 states. [2022-03-03 17:40:26,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55304 to 52449. [2022-03-03 17:40:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52449 states, 52448 states have (on average 3.0233183343502135) internal successors, (158567), 52448 states have internal predecessors, (158567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52449 states to 52449 states and 158567 transitions. [2022-03-03 17:40:26,482 INFO L78 Accepts]: Start accepts. Automaton has 52449 states and 158567 transitions. Word has length 77 [2022-03-03 17:40:26,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:26,482 INFO L470 AbstractCegarLoop]: Abstraction has 52449 states and 158567 transitions. [2022-03-03 17:40:26,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:26,484 INFO L276 IsEmpty]: Start isEmpty. Operand 52449 states and 158567 transitions. [2022-03-03 17:40:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:26,634 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:26,634 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:26,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:26,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:26,857 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:26,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1940822727, now seen corresponding path program 73 times [2022-03-03 17:40:26,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:26,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336772386] [2022-03-03 17:40:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:26,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:26,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:26,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336772386] [2022-03-03 17:40:26,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336772386] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:26,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918061054] [2022-03-03 17:40:26,976 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:40:26,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:26,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:26,977 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:26,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-03 17:40:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:27,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:40:27,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:27,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:27,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918061054] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:27,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:27,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-03-03 17:40:27,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792458641] [2022-03-03 17:40:27,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:27,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:40:27,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:40:27,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:40:27,629 INFO L87 Difference]: Start difference. First operand 52449 states and 158567 transitions. Second operand has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:29,156 INFO L93 Difference]: Finished difference Result 55071 states and 165362 transitions. [2022-03-03 17:40:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 17:40:29,157 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:29,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:29,284 INFO L225 Difference]: With dead ends: 55071 [2022-03-03 17:40:29,284 INFO L226 Difference]: Without dead ends: 54987 [2022-03-03 17:40:29,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1977 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=962, Invalid=5200, Unknown=0, NotChecked=0, Total=6162 [2022-03-03 17:40:29,285 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 562 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:29,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 2132 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:40:29,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54987 states. [2022-03-03 17:40:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54987 to 51673. [2022-03-03 17:40:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51673 states, 51672 states have (on average 3.0223912370335966) internal successors, (156173), 51672 states have internal predecessors, (156173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51673 states to 51673 states and 156173 transitions. [2022-03-03 17:40:30,663 INFO L78 Accepts]: Start accepts. Automaton has 51673 states and 156173 transitions. Word has length 77 [2022-03-03 17:40:30,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:30,663 INFO L470 AbstractCegarLoop]: Abstraction has 51673 states and 156173 transitions. [2022-03-03 17:40:30,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:30,663 INFO L276 IsEmpty]: Start isEmpty. Operand 51673 states and 156173 transitions. [2022-03-03 17:40:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:30,759 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:30,759 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:30,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:30,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-03-03 17:40:30,960 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:30,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:30,961 INFO L85 PathProgramCache]: Analyzing trace with hash 848278107, now seen corresponding path program 74 times [2022-03-03 17:40:30,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:30,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107379998] [2022-03-03 17:40:30,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:30,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:31,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:31,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107379998] [2022-03-03 17:40:31,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107379998] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:31,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274988466] [2022-03-03 17:40:31,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:40:31,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:31,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:31,078 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:31,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-03 17:40:31,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:40:31,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:31,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:40:31,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:31,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:31,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274988466] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:31,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:31,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2022-03-03 17:40:31,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837702610] [2022-03-03 17:40:31,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:31,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:40:31,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:31,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:40:31,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:40:31,742 INFO L87 Difference]: Start difference. First operand 51673 states and 156173 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:33,217 INFO L93 Difference]: Finished difference Result 54055 states and 162652 transitions. [2022-03-03 17:40:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:40:33,217 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:33,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:33,344 INFO L225 Difference]: With dead ends: 54055 [2022-03-03 17:40:33,344 INFO L226 Difference]: Without dead ends: 53947 [2022-03-03 17:40:33,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=804, Invalid=4598, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 17:40:33,345 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 434 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:33,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 2434 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:40:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53947 states. [2022-03-03 17:40:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53947 to 51757. [2022-03-03 17:40:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51757 states, 51756 states have (on average 3.022490146070021) internal successors, (156432), 51756 states have internal predecessors, (156432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51757 states to 51757 states and 156432 transitions. [2022-03-03 17:40:34,471 INFO L78 Accepts]: Start accepts. Automaton has 51757 states and 156432 transitions. Word has length 77 [2022-03-03 17:40:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:34,471 INFO L470 AbstractCegarLoop]: Abstraction has 51757 states and 156432 transitions. [2022-03-03 17:40:34,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 51757 states and 156432 transitions. [2022-03-03 17:40:34,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:34,559 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:34,560 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:34,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-03-03 17:40:34,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-03-03 17:40:34,761 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:34,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:34,762 INFO L85 PathProgramCache]: Analyzing trace with hash 191953635, now seen corresponding path program 75 times [2022-03-03 17:40:34,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:34,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792207846] [2022-03-03 17:40:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:34,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:34,866 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:34,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792207846] [2022-03-03 17:40:34,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792207846] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:34,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119640464] [2022-03-03 17:40:34,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:40:34,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:34,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:34,867 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:34,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-03 17:40:34,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:40:34,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:34,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:40:34,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:35,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:35,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119640464] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:35,787 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:35,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2022-03-03 17:40:35,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637134866] [2022-03-03 17:40:35,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:35,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 17:40:35,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 17:40:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:40:35,789 INFO L87 Difference]: Start difference. First operand 51757 states and 156432 transitions. Second operand has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:38,908 INFO L93 Difference]: Finished difference Result 71838 states and 214721 transitions. [2022-03-03 17:40:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-03-03 17:40:38,908 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:38,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:39,074 INFO L225 Difference]: With dead ends: 71838 [2022-03-03 17:40:39,075 INFO L226 Difference]: Without dead ends: 71754 [2022-03-03 17:40:39,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3599, Invalid=17571, Unknown=0, NotChecked=0, Total=21170 [2022-03-03 17:40:39,076 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1234 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:39,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 2539 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:40:39,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71754 states. [2022-03-03 17:40:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71754 to 52517. [2022-03-03 17:40:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52517 states, 52516 states have (on average 3.0226597608347934) internal successors, (158738), 52516 states have internal predecessors, (158738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52517 states to 52517 states and 158738 transitions. [2022-03-03 17:40:40,621 INFO L78 Accepts]: Start accepts. Automaton has 52517 states and 158738 transitions. Word has length 77 [2022-03-03 17:40:40,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:40,621 INFO L470 AbstractCegarLoop]: Abstraction has 52517 states and 158738 transitions. [2022-03-03 17:40:40,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:40,621 INFO L276 IsEmpty]: Start isEmpty. Operand 52517 states and 158738 transitions. [2022-03-03 17:40:40,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:40,708 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:40,708 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:40,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:40,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:40,908 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:40,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2035609333, now seen corresponding path program 76 times [2022-03-03 17:40:40,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:40,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853866152] [2022-03-03 17:40:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:41,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:41,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853866152] [2022-03-03 17:40:41,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853866152] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:41,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456520283] [2022-03-03 17:40:41,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:40:41,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:41,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:41,031 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:41,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-03 17:40:41,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:40:41,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:41,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:40:41,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:41,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:41,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456520283] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:41,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:41,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-03-03 17:40:41,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378593873] [2022-03-03 17:40:41,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:41,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:40:41,650 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:40:41,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:40:41,650 INFO L87 Difference]: Start difference. First operand 52517 states and 158738 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:42,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:42,856 INFO L93 Difference]: Finished difference Result 54275 states and 163351 transitions. [2022-03-03 17:40:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:40:42,856 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:42,985 INFO L225 Difference]: With dead ends: 54275 [2022-03-03 17:40:42,985 INFO L226 Difference]: Without dead ends: 54179 [2022-03-03 17:40:42,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=827, Invalid=4003, Unknown=0, NotChecked=0, Total=4830 [2022-03-03 17:40:42,985 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 602 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:42,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 1535 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:40:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54179 states. [2022-03-03 17:40:43,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54179 to 52905. [2022-03-03 17:40:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52905 states, 52904 states have (on average 3.022474671102374) internal successors, (159901), 52904 states have internal predecessors, (159901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52905 states to 52905 states and 159901 transitions. [2022-03-03 17:40:44,170 INFO L78 Accepts]: Start accepts. Automaton has 52905 states and 159901 transitions. Word has length 77 [2022-03-03 17:40:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:44,170 INFO L470 AbstractCegarLoop]: Abstraction has 52905 states and 159901 transitions. [2022-03-03 17:40:44,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:44,170 INFO L276 IsEmpty]: Start isEmpty. Operand 52905 states and 159901 transitions. [2022-03-03 17:40:44,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:44,263 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:44,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:44,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-03-03 17:40:44,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:44,464 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:44,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash 223279015, now seen corresponding path program 77 times [2022-03-03 17:40:44,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:44,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187855342] [2022-03-03 17:40:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:44,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:44,582 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:44,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187855342] [2022-03-03 17:40:44,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187855342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:44,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297296268] [2022-03-03 17:40:44,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:40:44,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:44,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:44,583 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:44,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-03 17:40:44,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:40:44,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:44,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:40:44,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:45,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:40:45,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297296268] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:45,607 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:45,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-03-03 17:40:45,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459539913] [2022-03-03 17:40:45,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:45,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 17:40:45,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 17:40:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1124, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:40:45,608 INFO L87 Difference]: Start difference. First operand 52905 states and 159901 transitions. Second operand has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:47,495 INFO L93 Difference]: Finished difference Result 58061 states and 173874 transitions. [2022-03-03 17:40:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-03 17:40:47,495 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:47,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:47,626 INFO L225 Difference]: With dead ends: 58061 [2022-03-03 17:40:47,626 INFO L226 Difference]: Without dead ends: 57911 [2022-03-03 17:40:47,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3034 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1763, Invalid=7743, Unknown=0, NotChecked=0, Total=9506 [2022-03-03 17:40:47,627 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 691 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:47,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 2534 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:40:47,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57911 states. [2022-03-03 17:40:48,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57911 to 53649. [2022-03-03 17:40:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53649 states, 53648 states have (on average 3.02108186698479) internal successors, (162075), 53648 states have internal predecessors, (162075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53649 states to 53649 states and 162075 transitions. [2022-03-03 17:40:48,818 INFO L78 Accepts]: Start accepts. Automaton has 53649 states and 162075 transitions. Word has length 77 [2022-03-03 17:40:48,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:48,818 INFO L470 AbstractCegarLoop]: Abstraction has 53649 states and 162075 transitions. [2022-03-03 17:40:48,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:48,818 INFO L276 IsEmpty]: Start isEmpty. Operand 53649 states and 162075 transitions. [2022-03-03 17:40:48,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:48,910 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:48,910 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:48,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-03-03 17:40:49,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:49,111 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:49,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:49,111 INFO L85 PathProgramCache]: Analyzing trace with hash -155653451, now seen corresponding path program 78 times [2022-03-03 17:40:49,111 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:49,111 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259556685] [2022-03-03 17:40:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:49,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:49,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:49,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259556685] [2022-03-03 17:40:49,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259556685] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:49,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035213751] [2022-03-03 17:40:49,210 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:40:49,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:49,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:49,211 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:49,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-03 17:40:49,299 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 17:40:49,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:49,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:40:49,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:49,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:40:49,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035213751] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:49,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:49,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 31 [2022-03-03 17:40:49,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308760068] [2022-03-03 17:40:49,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:49,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:40:49,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:40:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:40:49,778 INFO L87 Difference]: Start difference. First operand 53649 states and 162075 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:51,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:51,226 INFO L93 Difference]: Finished difference Result 60411 states and 181558 transitions. [2022-03-03 17:40:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:40:51,227 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:51,393 INFO L225 Difference]: With dead ends: 60411 [2022-03-03 17:40:51,393 INFO L226 Difference]: Without dead ends: 60315 [2022-03-03 17:40:51,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=708, Invalid=3452, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 17:40:51,394 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 562 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:51,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 2166 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:40:51,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60315 states. [2022-03-03 17:40:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60315 to 56021. [2022-03-03 17:40:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56021 states, 56020 states have (on average 3.023884327026062) internal successors, (169398), 56020 states have internal predecessors, (169398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56021 states to 56021 states and 169398 transitions. [2022-03-03 17:40:53,072 INFO L78 Accepts]: Start accepts. Automaton has 56021 states and 169398 transitions. Word has length 77 [2022-03-03 17:40:53,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:53,072 INFO L470 AbstractCegarLoop]: Abstraction has 56021 states and 169398 transitions. [2022-03-03 17:40:53,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 56021 states and 169398 transitions. [2022-03-03 17:40:53,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-03 17:40:53,181 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:53,181 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:53,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-03-03 17:40:53,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:53,382 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:53,382 INFO L85 PathProgramCache]: Analyzing trace with hash 31792739, now seen corresponding path program 79 times [2022-03-03 17:40:53,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:53,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886592478] [2022-03-03 17:40:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:53,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:53,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:53,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886592478] [2022-03-03 17:40:53,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886592478] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:53,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596688003] [2022-03-03 17:40:53,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:40:53,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:53,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:53,539 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:53,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-03 17:40:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:53,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:40:53,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:54,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:40:54,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596688003] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:54,325 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:54,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-03-03 17:40:54,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191624906] [2022-03-03 17:40:54,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:54,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 17:40:54,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:54,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 17:40:54,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:40:54,326 INFO L87 Difference]: Start difference. First operand 56021 states and 169398 transitions. Second operand has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:56,352 INFO L93 Difference]: Finished difference Result 63634 states and 190182 transitions. [2022-03-03 17:40:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-03 17:40:56,353 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-03-03 17:40:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:56,507 INFO L225 Difference]: With dead ends: 63634 [2022-03-03 17:40:56,507 INFO L226 Difference]: Without dead ends: 63469 [2022-03-03 17:40:56,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3205 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1981, Invalid=8321, Unknown=0, NotChecked=0, Total=10302 [2022-03-03 17:40:56,508 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 744 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:56,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 2607 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:40:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63469 states. [2022-03-03 17:40:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63469 to 54757. [2022-03-03 17:40:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54757 states, 54756 states have (on average 3.020052596975674) internal successors, (165366), 54756 states have internal predecessors, (165366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54757 states to 54757 states and 165366 transitions. [2022-03-03 17:40:58,066 INFO L78 Accepts]: Start accepts. Automaton has 54757 states and 165366 transitions. Word has length 77 [2022-03-03 17:40:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:58,066 INFO L470 AbstractCegarLoop]: Abstraction has 54757 states and 165366 transitions. [2022-03-03 17:40:58,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 54757 states and 165366 transitions. [2022-03-03 17:40:58,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:40:58,153 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:58,153 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:58,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-03-03 17:40:58,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:58,353 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:40:58,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:58,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1890973665, now seen corresponding path program 80 times [2022-03-03 17:40:58,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:58,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875564848] [2022-03-03 17:40:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:58,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:58,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:58,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875564848] [2022-03-03 17:40:58,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875564848] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:58,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561242504] [2022-03-03 17:40:58,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:40:58,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:58,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:58,424 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:40:58,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-03 17:40:58,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:40:58,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:58,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:40:58,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:58,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:59,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561242504] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:59,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:59,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2022-03-03 17:40:59,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985789373] [2022-03-03 17:40:59,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:59,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:40:59,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:40:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:40:59,248 INFO L87 Difference]: Start difference. First operand 54757 states and 165366 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:59,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:59,900 INFO L93 Difference]: Finished difference Result 86252 states and 263480 transitions. [2022-03-03 17:40:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:40:59,901 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:40:59,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:00,122 INFO L225 Difference]: With dead ends: 86252 [2022-03-03 17:41:00,122 INFO L226 Difference]: Without dead ends: 86024 [2022-03-03 17:41:00,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:41:00,122 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 313 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:00,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 959 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:41:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86024 states. [2022-03-03 17:41:01,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86024 to 78062. [2022-03-03 17:41:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78062 states, 78061 states have (on average 3.033986241529061) internal successors, (236836), 78061 states have internal predecessors, (236836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78062 states to 78062 states and 236836 transitions. [2022-03-03 17:41:02,089 INFO L78 Accepts]: Start accepts. Automaton has 78062 states and 236836 transitions. Word has length 79 [2022-03-03 17:41:02,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:02,089 INFO L470 AbstractCegarLoop]: Abstraction has 78062 states and 236836 transitions. [2022-03-03 17:41:02,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:02,089 INFO L276 IsEmpty]: Start isEmpty. Operand 78062 states and 236836 transitions. [2022-03-03 17:41:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:41:02,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:02,578 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:02,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:02,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-03-03 17:41:02,807 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1781177015, now seen corresponding path program 81 times [2022-03-03 17:41:02,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:02,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997608833] [2022-03-03 17:41:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:02,949 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:02,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:02,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997608833] [2022-03-03 17:41:02,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997608833] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:02,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621748706] [2022-03-03 17:41:02,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:41:02,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:02,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:02,950 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:02,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-03 17:41:03,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:41:03,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:03,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:41:03,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:03,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:03,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621748706] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:03,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:03,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 22 [2022-03-03 17:41:03,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336859771] [2022-03-03 17:41:03,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:03,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:41:03,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:03,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:41:03,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:41:03,413 INFO L87 Difference]: Start difference. First operand 78062 states and 236836 transitions. Second operand has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:04,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:04,646 INFO L93 Difference]: Finished difference Result 90363 states and 273656 transitions. [2022-03-03 17:41:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:41:04,646 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:41:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:04,875 INFO L225 Difference]: With dead ends: 90363 [2022-03-03 17:41:04,875 INFO L226 Difference]: Without dead ends: 90348 [2022-03-03 17:41:04,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=342, Invalid=1728, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:41:04,876 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 443 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:04,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 1991 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:41:04,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90348 states. [2022-03-03 17:41:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90348 to 81518. [2022-03-03 17:41:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81518 states, 81517 states have (on average 3.0429480967160223) internal successors, (248052), 81517 states have internal predecessors, (248052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81518 states to 81518 states and 248052 transitions. [2022-03-03 17:41:06,996 INFO L78 Accepts]: Start accepts. Automaton has 81518 states and 248052 transitions. Word has length 79 [2022-03-03 17:41:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:06,996 INFO L470 AbstractCegarLoop]: Abstraction has 81518 states and 248052 transitions. [2022-03-03 17:41:06,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:06,997 INFO L276 IsEmpty]: Start isEmpty. Operand 81518 states and 248052 transitions. [2022-03-03 17:41:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:41:07,144 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:07,144 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:07,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:07,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:07,345 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash -273105791, now seen corresponding path program 82 times [2022-03-03 17:41:07,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:07,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865149927] [2022-03-03 17:41:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:07,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:07,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:07,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865149927] [2022-03-03 17:41:07,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865149927] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:07,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355765721] [2022-03-03 17:41:07,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:41:07,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:07,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:07,468 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:07,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-03 17:41:07,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:41:07,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:07,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:41:07,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:07,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:08,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355765721] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:08,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:08,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2022-03-03 17:41:08,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283454774] [2022-03-03 17:41:08,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:08,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:41:08,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:08,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:41:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:41:08,667 INFO L87 Difference]: Start difference. First operand 81518 states and 248052 transitions. Second operand has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:13,100 INFO L93 Difference]: Finished difference Result 115213 states and 345840 transitions. [2022-03-03 17:41:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-03-03 17:41:13,101 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:41:13,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:13,450 INFO L225 Difference]: With dead ends: 115213 [2022-03-03 17:41:13,450 INFO L226 Difference]: Without dead ends: 115003 [2022-03-03 17:41:13,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10414 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3727, Invalid=23995, Unknown=0, NotChecked=0, Total=27722 [2022-03-03 17:41:13,451 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 991 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:13,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 3279 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:41:13,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115003 states. [2022-03-03 17:41:15,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115003 to 84166. [2022-03-03 17:41:15,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84166 states, 84165 states have (on average 3.038578981762015) internal successors, (255742), 84165 states have internal predecessors, (255742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84166 states to 84166 states and 255742 transitions. [2022-03-03 17:41:15,668 INFO L78 Accepts]: Start accepts. Automaton has 84166 states and 255742 transitions. Word has length 79 [2022-03-03 17:41:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:15,669 INFO L470 AbstractCegarLoop]: Abstraction has 84166 states and 255742 transitions. [2022-03-03 17:41:15,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 84166 states and 255742 transitions. [2022-03-03 17:41:16,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:41:16,440 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:16,440 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:16,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:16,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:16,655 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 261115223, now seen corresponding path program 83 times [2022-03-03 17:41:16,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:16,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713791389] [2022-03-03 17:41:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:16,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:16,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:16,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713791389] [2022-03-03 17:41:16,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713791389] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:16,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812900814] [2022-03-03 17:41:16,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:41:16,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:16,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:16,864 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:16,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-03 17:41:16,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:41:16,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:16,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 17:41:16,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:17,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:18,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812900814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:18,025 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:18,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 39 [2022-03-03 17:41:18,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390256142] [2022-03-03 17:41:18,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:18,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:41:18,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:18,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:41:18,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1218, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:41:18,027 INFO L87 Difference]: Start difference. First operand 84166 states and 255742 transitions. Second operand has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:22,638 INFO L93 Difference]: Finished difference Result 128331 states and 384407 transitions. [2022-03-03 17:41:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-03-03 17:41:22,638 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:41:22,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:23,001 INFO L225 Difference]: With dead ends: 128331 [2022-03-03 17:41:23,001 INFO L226 Difference]: Without dead ends: 128235 [2022-03-03 17:41:23,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8998 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3968, Invalid=20524, Unknown=0, NotChecked=0, Total=24492 [2022-03-03 17:41:23,002 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 1470 mSDsluCounter, 3438 mSDsCounter, 0 mSdLazyCounter, 1966 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:23,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 3480 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1966 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:41:23,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128235 states. [2022-03-03 17:41:25,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128235 to 84626. [2022-03-03 17:41:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84626 states, 84625 states have (on average 3.0380502215657312) internal successors, (257095), 84625 states have internal predecessors, (257095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84626 states to 84626 states and 257095 transitions. [2022-03-03 17:41:25,584 INFO L78 Accepts]: Start accepts. Automaton has 84626 states and 257095 transitions. Word has length 79 [2022-03-03 17:41:25,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:25,584 INFO L470 AbstractCegarLoop]: Abstraction has 84626 states and 257095 transitions. [2022-03-03 17:41:25,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:25,584 INFO L276 IsEmpty]: Start isEmpty. Operand 84626 states and 257095 transitions. [2022-03-03 17:41:26,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:41:26,122 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:26,122 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:26,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:26,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:26,346 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:26,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash 402406013, now seen corresponding path program 84 times [2022-03-03 17:41:26,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:26,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947570022] [2022-03-03 17:41:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:26,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:26,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:26,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947570022] [2022-03-03 17:41:26,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947570022] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:26,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573284607] [2022-03-03 17:41:26,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:41:26,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:26,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:26,467 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:26,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-03 17:41:26,561 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:41:26,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:26,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:41:26,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:26,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:27,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573284607] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:27,374 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:27,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 30 [2022-03-03 17:41:27,375 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479771423] [2022-03-03 17:41:27,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:27,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:41:27,375 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:27,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:41:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:41:27,376 INFO L87 Difference]: Start difference. First operand 84626 states and 257095 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:31,851 INFO L93 Difference]: Finished difference Result 142378 states and 429999 transitions. [2022-03-03 17:41:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-03-03 17:41:31,851 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:41:31,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:32,256 INFO L225 Difference]: With dead ends: 142378 [2022-03-03 17:41:32,257 INFO L226 Difference]: Without dead ends: 142333 [2022-03-03 17:41:32,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10235 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3833, Invalid=23227, Unknown=0, NotChecked=0, Total=27060 [2022-03-03 17:41:32,258 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1197 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:32,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 2860 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:41:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142333 states. [2022-03-03 17:41:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142333 to 96218. [2022-03-03 17:41:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96218 states, 96217 states have (on average 3.0464574867227205) internal successors, (293121), 96217 states have internal predecessors, (293121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96218 states to 96218 states and 293121 transitions. [2022-03-03 17:41:35,438 INFO L78 Accepts]: Start accepts. Automaton has 96218 states and 293121 transitions. Word has length 79 [2022-03-03 17:41:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:35,438 INFO L470 AbstractCegarLoop]: Abstraction has 96218 states and 293121 transitions. [2022-03-03 17:41:35,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:35,438 INFO L276 IsEmpty]: Start isEmpty. Operand 96218 states and 293121 transitions. [2022-03-03 17:41:35,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:41:35,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:35,604 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:35,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-03-03 17:41:35,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:35,804 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:35,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:35,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1136477801, now seen corresponding path program 85 times [2022-03-03 17:41:35,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:35,805 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975219298] [2022-03-03 17:41:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:35,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:35,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:35,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975219298] [2022-03-03 17:41:35,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975219298] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:35,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920665455] [2022-03-03 17:41:35,949 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:41:35,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:35,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:35,951 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:35,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-03 17:41:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:36,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:41:36,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:36,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:37,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920665455] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:37,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:37,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 33 [2022-03-03 17:41:37,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989957589] [2022-03-03 17:41:37,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:37,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:41:37,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:37,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:41:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:41:37,160 INFO L87 Difference]: Start difference. First operand 96218 states and 293121 transitions. Second operand has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:41,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:41,842 INFO L93 Difference]: Finished difference Result 182881 states and 556937 transitions. [2022-03-03 17:41:41,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-03-03 17:41:41,843 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:41:41,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:42,488 INFO L225 Difference]: With dead ends: 182881 [2022-03-03 17:41:42,489 INFO L226 Difference]: Without dead ends: 182737 [2022-03-03 17:41:42,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7095 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2951, Invalid=17641, Unknown=0, NotChecked=0, Total=20592 [2022-03-03 17:41:42,490 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1223 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:42,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 3784 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:41:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182737 states. [2022-03-03 17:41:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182737 to 121110. [2022-03-03 17:41:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121110 states, 121109 states have (on average 3.0598716858367254) internal successors, (370578), 121109 states have internal predecessors, (370578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:46,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121110 states to 121110 states and 370578 transitions. [2022-03-03 17:41:46,766 INFO L78 Accepts]: Start accepts. Automaton has 121110 states and 370578 transitions. Word has length 79 [2022-03-03 17:41:46,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:46,766 INFO L470 AbstractCegarLoop]: Abstraction has 121110 states and 370578 transitions. [2022-03-03 17:41:46,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:46,766 INFO L276 IsEmpty]: Start isEmpty. Operand 121110 states and 370578 transitions. [2022-03-03 17:41:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:41:46,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:46,990 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:47,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:47,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:47,191 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1652623033, now seen corresponding path program 86 times [2022-03-03 17:41:47,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:47,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756810049] [2022-03-03 17:41:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:47,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:47,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756810049] [2022-03-03 17:41:47,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756810049] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:47,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327329709] [2022-03-03 17:41:47,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:41:47,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:47,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:47,329 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:47,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-03 17:41:47,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:41:47,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:47,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:41:47,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:48,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:48,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327329709] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:48,607 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:48,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 34 [2022-03-03 17:41:48,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834773357] [2022-03-03 17:41:48,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:48,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:41:48,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:48,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:41:48,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:41:48,608 INFO L87 Difference]: Start difference. First operand 121110 states and 370578 transitions. Second operand has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:52,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:52,792 INFO L93 Difference]: Finished difference Result 169697 states and 518906 transitions. [2022-03-03 17:41:52,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-03-03 17:41:52,793 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:41:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:53,363 INFO L225 Difference]: With dead ends: 169697 [2022-03-03 17:41:53,363 INFO L226 Difference]: Without dead ends: 169577 [2022-03-03 17:41:53,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5506 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2343, Invalid=14169, Unknown=0, NotChecked=0, Total=16512 [2022-03-03 17:41:53,364 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1102 mSDsluCounter, 3460 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3502 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:53,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 3502 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:41:53,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169577 states. [2022-03-03 17:41:56,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169577 to 124346. [2022-03-03 17:41:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124346 states, 124345 states have (on average 3.061715388636455) internal successors, (380709), 124345 states have internal predecessors, (380709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124346 states to 124346 states and 380709 transitions. [2022-03-03 17:41:57,608 INFO L78 Accepts]: Start accepts. Automaton has 124346 states and 380709 transitions. Word has length 79 [2022-03-03 17:41:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:57,609 INFO L470 AbstractCegarLoop]: Abstraction has 124346 states and 380709 transitions. [2022-03-03 17:41:57,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:57,609 INFO L276 IsEmpty]: Start isEmpty. Operand 124346 states and 380709 transitions. [2022-03-03 17:41:57,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:41:57,827 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:57,827 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:57,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:58,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-03-03 17:41:58,027 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:41:58,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash 549056321, now seen corresponding path program 87 times [2022-03-03 17:41:58,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:58,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730735739] [2022-03-03 17:41:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:58,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:58,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:58,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730735739] [2022-03-03 17:41:58,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730735739] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:58,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696538641] [2022-03-03 17:41:58,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:41:58,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:58,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:58,152 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:41:58,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-03 17:41:58,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 17:41:58,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:58,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:41:58,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:58,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:59,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696538641] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:59,153 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:59,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-03-03 17:41:59,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307627677] [2022-03-03 17:41:59,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:59,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 17:41:59,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:59,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 17:41:59,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:41:59,154 INFO L87 Difference]: Start difference. First operand 124346 states and 380709 transitions. Second operand has 37 states, 37 states have (on average 4.243243243243243) internal successors, (157), 37 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:06,346 INFO L93 Difference]: Finished difference Result 189583 states and 574741 transitions. [2022-03-03 17:42:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2022-03-03 17:42:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.243243243243243) internal successors, (157), 37 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:42:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:06,995 INFO L225 Difference]: With dead ends: 189583 [2022-03-03 17:42:06,995 INFO L226 Difference]: Without dead ends: 189538 [2022-03-03 17:42:06,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23293 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8337, Invalid=47595, Unknown=0, NotChecked=0, Total=55932 [2022-03-03 17:42:06,997 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 2054 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:06,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2054 Valid, 3056 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:42:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189538 states. [2022-03-03 17:42:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189538 to 132022. [2022-03-03 17:42:10,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132022 states, 132021 states have (on average 3.061043318865938) internal successors, (404122), 132021 states have internal predecessors, (404122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132022 states to 132022 states and 404122 transitions. [2022-03-03 17:42:11,476 INFO L78 Accepts]: Start accepts. Automaton has 132022 states and 404122 transitions. Word has length 79 [2022-03-03 17:42:11,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:11,476 INFO L470 AbstractCegarLoop]: Abstraction has 132022 states and 404122 transitions. [2022-03-03 17:42:11,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.243243243243243) internal successors, (157), 37 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 132022 states and 404122 transitions. [2022-03-03 17:42:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:42:11,699 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:11,699 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:11,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:11,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:11,900 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:11,900 INFO L85 PathProgramCache]: Analyzing trace with hash -989827493, now seen corresponding path program 88 times [2022-03-03 17:42:11,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:11,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193133934] [2022-03-03 17:42:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:11,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:12,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:12,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193133934] [2022-03-03 17:42:12,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193133934] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:12,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319405545] [2022-03-03 17:42:12,034 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:42:12,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:12,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:12,035 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:42:12,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-03 17:42:12,129 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:42:12,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:12,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:42:12,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:12,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:42:13,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319405545] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:13,274 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:13,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 34 [2022-03-03 17:42:13,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321661657] [2022-03-03 17:42:13,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:13,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:42:13,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:42:13,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=937, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:42:13,275 INFO L87 Difference]: Start difference. First operand 132022 states and 404122 transitions. Second operand has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:18,923 INFO L93 Difference]: Finished difference Result 196347 states and 599817 transitions. [2022-03-03 17:42:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-03-03 17:42:18,924 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:42:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:20,341 INFO L225 Difference]: With dead ends: 196347 [2022-03-03 17:42:20,341 INFO L226 Difference]: Without dead ends: 196275 [2022-03-03 17:42:20,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15896 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5887, Invalid=34313, Unknown=0, NotChecked=0, Total=40200 [2022-03-03 17:42:20,344 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 1725 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:20,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1725 Valid, 2777 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:42:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196275 states. [2022-03-03 17:42:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196275 to 130966. [2022-03-03 17:42:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130966 states, 130965 states have (on average 3.0608025044859315) internal successors, (400858), 130965 states have internal predecessors, (400858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130966 states to 130966 states and 400858 transitions. [2022-03-03 17:42:25,235 INFO L78 Accepts]: Start accepts. Automaton has 130966 states and 400858 transitions. Word has length 79 [2022-03-03 17:42:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:25,235 INFO L470 AbstractCegarLoop]: Abstraction has 130966 states and 400858 transitions. [2022-03-03 17:42:25,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 130966 states and 400858 transitions. [2022-03-03 17:42:25,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:42:25,462 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:25,462 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:25,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:25,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:25,664 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1799273341, now seen corresponding path program 89 times [2022-03-03 17:42:25,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:25,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730150002] [2022-03-03 17:42:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:25,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:25,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:25,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730150002] [2022-03-03 17:42:25,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730150002] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:25,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891421713] [2022-03-03 17:42:25,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:42:25,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:25,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:25,810 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:42:25,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-03 17:42:25,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 17:42:25,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:25,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:42:25,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:26,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:27,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891421713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:27,081 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:27,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-03-03 17:42:27,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402344168] [2022-03-03 17:42:27,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:27,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 17:42:27,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:27,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 17:42:27,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:42:27,082 INFO L87 Difference]: Start difference. First operand 130966 states and 400858 transitions. Second operand has 36 states, 36 states have (on average 4.055555555555555) internal successors, (146), 36 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:33,087 INFO L93 Difference]: Finished difference Result 197132 states and 596544 transitions. [2022-03-03 17:42:33,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-03-03 17:42:33,087 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.055555555555555) internal successors, (146), 36 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:42:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:34,125 INFO L225 Difference]: With dead ends: 197132 [2022-03-03 17:42:34,125 INFO L226 Difference]: Without dead ends: 197012 [2022-03-03 17:42:34,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13990 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5290, Invalid=31000, Unknown=0, NotChecked=0, Total=36290 [2022-03-03 17:42:34,127 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 1318 mSDsluCounter, 3834 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 3897 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:34,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 3897 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:42:34,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197012 states. [2022-03-03 17:42:37,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197012 to 132266. [2022-03-03 17:42:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132266 states, 132265 states have (on average 3.0602578157486864) internal successors, (404765), 132265 states have internal predecessors, (404765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132266 states to 132266 states and 404765 transitions. [2022-03-03 17:42:38,768 INFO L78 Accepts]: Start accepts. Automaton has 132266 states and 404765 transitions. Word has length 79 [2022-03-03 17:42:38,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:38,768 INFO L470 AbstractCegarLoop]: Abstraction has 132266 states and 404765 transitions. [2022-03-03 17:42:38,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.055555555555555) internal successors, (146), 36 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:38,768 INFO L276 IsEmpty]: Start isEmpty. Operand 132266 states and 404765 transitions. [2022-03-03 17:42:38,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:42:38,985 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:38,986 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:39,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:39,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:39,186 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash -652038257, now seen corresponding path program 90 times [2022-03-03 17:42:39,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:39,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939653912] [2022-03-03 17:42:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:39,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:39,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:39,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939653912] [2022-03-03 17:42:39,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939653912] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:39,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20729430] [2022-03-03 17:42:39,320 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:42:39,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:39,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:39,321 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:42:39,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-03 17:42:39,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-03 17:42:39,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:39,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:42:39,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:39,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:40,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20729430] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:40,568 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:40,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 34 [2022-03-03 17:42:40,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911363508] [2022-03-03 17:42:40,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:40,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:42:40,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:40,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:42:40,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:42:40,569 INFO L87 Difference]: Start difference. First operand 132266 states and 404765 transitions. Second operand has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:43,580 INFO L93 Difference]: Finished difference Result 140697 states and 428786 transitions. [2022-03-03 17:42:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-03 17:42:43,580 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:42:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:44,288 INFO L225 Difference]: With dead ends: 140697 [2022-03-03 17:42:44,288 INFO L226 Difference]: Without dead ends: 140601 [2022-03-03 17:42:44,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4368 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1890, Invalid=10766, Unknown=0, NotChecked=0, Total=12656 [2022-03-03 17:42:44,289 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1004 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:44,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 2830 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:42:44,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140601 states. [2022-03-03 17:42:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140601 to 132914. [2022-03-03 17:42:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132914 states, 132913 states have (on average 3.0602800328034125) internal successors, (406751), 132913 states have internal predecessors, (406751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132914 states to 132914 states and 406751 transitions. [2022-03-03 17:42:48,096 INFO L78 Accepts]: Start accepts. Automaton has 132914 states and 406751 transitions. Word has length 79 [2022-03-03 17:42:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:48,096 INFO L470 AbstractCegarLoop]: Abstraction has 132914 states and 406751 transitions. [2022-03-03 17:42:48,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 132914 states and 406751 transitions. [2022-03-03 17:42:48,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:42:48,320 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:48,320 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:48,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:48,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:48,521 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:42:48,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash 679914949, now seen corresponding path program 91 times [2022-03-03 17:42:48,522 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:48,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90424677] [2022-03-03 17:42:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:48,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:48,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:48,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90424677] [2022-03-03 17:42:48,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90424677] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:48,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499001338] [2022-03-03 17:42:48,629 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:42:48,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:48,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:48,630 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:42:48,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-03 17:42:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:48,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:42:48,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:49,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:42:49,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499001338] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:49,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:49,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2022-03-03 17:42:49,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90517074] [2022-03-03 17:42:49,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:49,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:42:49,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:49,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:42:49,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:42:49,783 INFO L87 Difference]: Start difference. First operand 132914 states and 406751 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:55,186 INFO L93 Difference]: Finished difference Result 205673 states and 617592 transitions. [2022-03-03 17:42:55,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-03-03 17:42:55,187 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:42:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:42:56,347 INFO L225 Difference]: With dead ends: 205673 [2022-03-03 17:42:56,347 INFO L226 Difference]: Without dead ends: 205478 [2022-03-03 17:42:56,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10186 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3491, Invalid=23241, Unknown=0, NotChecked=0, Total=26732 [2022-03-03 17:42:56,349 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 846 mSDsluCounter, 3896 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:42:56,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 3990 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:42:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205478 states. [2022-03-03 17:43:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205478 to 161234. [2022-03-03 17:43:00,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161234 states, 161233 states have (on average 3.0193756861188468) internal successors, (486823), 161233 states have internal predecessors, (486823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161234 states to 161234 states and 486823 transitions. [2022-03-03 17:43:01,261 INFO L78 Accepts]: Start accepts. Automaton has 161234 states and 486823 transitions. Word has length 79 [2022-03-03 17:43:01,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:01,262 INFO L470 AbstractCegarLoop]: Abstraction has 161234 states and 486823 transitions. [2022-03-03 17:43:01,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 161234 states and 486823 transitions. [2022-03-03 17:43:01,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:43:01,978 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:01,978 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:01,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:02,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:02,179 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1542673215, now seen corresponding path program 92 times [2022-03-03 17:43:02,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:02,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696713656] [2022-03-03 17:43:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:02,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:02,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696713656] [2022-03-03 17:43:02,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696713656] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:02,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373132656] [2022-03-03 17:43:02,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:43:02,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:02,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:02,306 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:43:02,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-03 17:43:02,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:43:02,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:02,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:43:02,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:02,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:03,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373132656] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:03,235 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:03,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 34 [2022-03-03 17:43:03,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546473590] [2022-03-03 17:43:03,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:03,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:43:03,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:03,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:43:03,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:43:03,236 INFO L87 Difference]: Start difference. First operand 161234 states and 486823 transitions. Second operand has 34 states, 34 states have (on average 4.529411764705882) internal successors, (154), 34 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:10,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:10,404 INFO L93 Difference]: Finished difference Result 268771 states and 809207 transitions. [2022-03-03 17:43:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-03-03 17:43:10,404 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.529411764705882) internal successors, (154), 34 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:43:10,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:11,964 INFO L225 Difference]: With dead ends: 268771 [2022-03-03 17:43:11,964 INFO L226 Difference]: Without dead ends: 268531 [2022-03-03 17:43:11,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10866 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4977, Invalid=24779, Unknown=0, NotChecked=0, Total=29756 [2022-03-03 17:43:11,965 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 1174 mSDsluCounter, 4219 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:11,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 4222 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 17:43:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268531 states. [2022-03-03 17:43:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268531 to 194614. [2022-03-03 17:43:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194614 states, 194613 states have (on average 3.027351718538844) internal successors, (589162), 194613 states have internal predecessors, (589162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194614 states to 194614 states and 589162 transitions. [2022-03-03 17:43:18,776 INFO L78 Accepts]: Start accepts. Automaton has 194614 states and 589162 transitions. Word has length 79 [2022-03-03 17:43:18,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:18,776 INFO L470 AbstractCegarLoop]: Abstraction has 194614 states and 589162 transitions. [2022-03-03 17:43:18,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.529411764705882) internal successors, (154), 34 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:18,776 INFO L276 IsEmpty]: Start isEmpty. Operand 194614 states and 589162 transitions. [2022-03-03 17:43:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:43:19,089 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:19,090 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:19,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:19,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-03-03 17:43:19,300 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:19,301 INFO L85 PathProgramCache]: Analyzing trace with hash 300982483, now seen corresponding path program 93 times [2022-03-03 17:43:19,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:19,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061500419] [2022-03-03 17:43:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:19,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:19,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:19,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061500419] [2022-03-03 17:43:19,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061500419] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:19,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377250986] [2022-03-03 17:43:19,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:43:19,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:19,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:19,454 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:43:19,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-03 17:43:19,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 17:43:19,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:19,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:43:19,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:19,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:20,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377250986] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:20,600 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:20,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-03-03 17:43:20,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274729082] [2022-03-03 17:43:20,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:20,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 17:43:20,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 17:43:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:43:20,601 INFO L87 Difference]: Start difference. First operand 194614 states and 589162 transitions. Second operand has 37 states, 37 states have (on average 4.1891891891891895) internal successors, (155), 37 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:27,563 INFO L93 Difference]: Finished difference Result 261201 states and 782282 transitions. [2022-03-03 17:43:27,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-03-03 17:43:27,564 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.1891891891891895) internal successors, (155), 37 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:43:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:28,545 INFO L225 Difference]: With dead ends: 261201 [2022-03-03 17:43:28,546 INFO L226 Difference]: Without dead ends: 261033 [2022-03-03 17:43:28,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14901 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5796, Invalid=32816, Unknown=0, NotChecked=0, Total=38612 [2022-03-03 17:43:28,547 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1469 mSDsluCounter, 3816 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:28,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 3802 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2102 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:43:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261033 states. [2022-03-03 17:43:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261033 to 194770. [2022-03-03 17:43:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194770 states, 194769 states have (on average 3.0286698601933573) internal successors, (589891), 194769 states have internal predecessors, (589891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194770 states to 194770 states and 589891 transitions. [2022-03-03 17:43:35,542 INFO L78 Accepts]: Start accepts. Automaton has 194770 states and 589891 transitions. Word has length 79 [2022-03-03 17:43:35,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:35,542 INFO L470 AbstractCegarLoop]: Abstraction has 194770 states and 589891 transitions. [2022-03-03 17:43:35,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.1891891891891895) internal successors, (155), 37 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:35,542 INFO L276 IsEmpty]: Start isEmpty. Operand 194770 states and 589891 transitions. [2022-03-03 17:43:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:43:36,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:36,366 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:36,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:36,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-03-03 17:43:36,567 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:36,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:36,567 INFO L85 PathProgramCache]: Analyzing trace with hash 984893377, now seen corresponding path program 94 times [2022-03-03 17:43:36,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:36,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274571503] [2022-03-03 17:43:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:36,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:36,722 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:36,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274571503] [2022-03-03 17:43:36,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274571503] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:36,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191446554] [2022-03-03 17:43:36,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:43:36,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:36,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:36,723 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:43:36,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-03 17:43:36,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:43:36,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:36,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:43:36,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:37,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:37,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191446554] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:37,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:37,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 38 [2022-03-03 17:43:37,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500669057] [2022-03-03 17:43:37,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:37,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:43:37,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:37,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:43:37,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:43:37,666 INFO L87 Difference]: Start difference. First operand 194770 states and 589891 transitions. Second operand has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:42,330 INFO L93 Difference]: Finished difference Result 273761 states and 819788 transitions. [2022-03-03 17:43:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-03-03 17:43:42,330 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:43:42,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:43,744 INFO L225 Difference]: With dead ends: 273761 [2022-03-03 17:43:43,744 INFO L226 Difference]: Without dead ends: 273491 [2022-03-03 17:43:43,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7584 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2816, Invalid=17490, Unknown=0, NotChecked=0, Total=20306 [2022-03-03 17:43:43,745 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 866 mSDsluCounter, 4639 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 4688 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:43,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 4688 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:43:44,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273491 states. [2022-03-03 17:43:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273491 to 202898. [2022-03-03 17:43:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202898 states, 202897 states have (on average 3.019714436388907) internal successors, (612691), 202897 states have internal predecessors, (612691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202898 states to 202898 states and 612691 transitions. [2022-03-03 17:43:50,900 INFO L78 Accepts]: Start accepts. Automaton has 202898 states and 612691 transitions. Word has length 79 [2022-03-03 17:43:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:50,900 INFO L470 AbstractCegarLoop]: Abstraction has 202898 states and 612691 transitions. [2022-03-03 17:43:50,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 202898 states and 612691 transitions. [2022-03-03 17:43:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:43:51,247 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:51,247 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:43:51,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:51,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:51,448 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:51,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:51,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1036643905, now seen corresponding path program 95 times [2022-03-03 17:43:51,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:51,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142829093] [2022-03-03 17:43:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:51,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:51,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142829093] [2022-03-03 17:43:51,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142829093] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:51,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36738893] [2022-03-03 17:43:51,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:43:51,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:51,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:51,577 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:43:51,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-03 17:43:51,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:43:51,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:51,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 17:43:51,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:52,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:52,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36738893] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:52,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:52,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 34 [2022-03-03 17:43:52,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623821853] [2022-03-03 17:43:52,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:52,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:43:52,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:43:52,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:43:52,748 INFO L87 Difference]: Start difference. First operand 202898 states and 612691 transitions. Second operand has 34 states, 34 states have (on average 4.764705882352941) internal successors, (162), 34 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:43:56,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:56,409 INFO L93 Difference]: Finished difference Result 221283 states and 665607 transitions. [2022-03-03 17:43:56,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-03 17:43:56,410 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.764705882352941) internal successors, (162), 34 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:43:56,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:57,513 INFO L225 Difference]: With dead ends: 221283 [2022-03-03 17:43:57,514 INFO L226 Difference]: Without dead ends: 221088 [2022-03-03 17:43:57,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2810 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1359, Invalid=7571, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:43:57,514 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 686 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:57,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 2192 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:43:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221088 states. [2022-03-03 17:44:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221088 to 209798. [2022-03-03 17:44:03,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209798 states, 209797 states have (on average 3.018470235513377) internal successors, (633266), 209797 states have internal predecessors, (633266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:04,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209798 states to 209798 states and 633266 transitions. [2022-03-03 17:44:04,287 INFO L78 Accepts]: Start accepts. Automaton has 209798 states and 633266 transitions. Word has length 79 [2022-03-03 17:44:04,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:04,287 INFO L470 AbstractCegarLoop]: Abstraction has 209798 states and 633266 transitions. [2022-03-03 17:44:04,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.764705882352941) internal successors, (162), 34 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 209798 states and 633266 transitions. [2022-03-03 17:44:04,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:44:04,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:04,620 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:04,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:04,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:04,822 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:04,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:04,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1570864919, now seen corresponding path program 96 times [2022-03-03 17:44:04,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:04,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468232945] [2022-03-03 17:44:04,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:04,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:05,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:05,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468232945] [2022-03-03 17:44:05,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468232945] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:05,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11356999] [2022-03-03 17:44:05,330 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:44:05,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:05,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:05,331 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:05,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-03 17:44:05,431 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:44:05,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:05,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:44:05,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:05,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:44:06,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11356999] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:06,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:06,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 35 [2022-03-03 17:44:06,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747036949] [2022-03-03 17:44:06,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:06,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:44:06,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:06,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:44:06,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:44:06,161 INFO L87 Difference]: Start difference. First operand 209798 states and 633266 transitions. Second operand has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:09,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:09,509 INFO L93 Difference]: Finished difference Result 240284 states and 723976 transitions. [2022-03-03 17:44:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-03 17:44:09,509 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:44:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:10,693 INFO L225 Difference]: With dead ends: 240284 [2022-03-03 17:44:10,694 INFO L226 Difference]: Without dead ends: 240068 [2022-03-03 17:44:10,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3043 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1369, Invalid=7561, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:44:10,694 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 892 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:10,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 2356 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:44:10,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240068 states. [2022-03-03 17:44:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240068 to 216834. [2022-03-03 17:44:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216834 states, 216833 states have (on average 3.0213067199180936) internal successors, (655119), 216833 states have internal predecessors, (655119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216834 states to 216834 states and 655119 transitions. [2022-03-03 17:44:17,715 INFO L78 Accepts]: Start accepts. Automaton has 216834 states and 655119 transitions. Word has length 79 [2022-03-03 17:44:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:17,715 INFO L470 AbstractCegarLoop]: Abstraction has 216834 states and 655119 transitions. [2022-03-03 17:44:17,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 216834 states and 655119 transitions. [2022-03-03 17:44:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:44:18,075 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:18,075 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:18,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:18,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-03-03 17:44:18,275 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:18,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1712155709, now seen corresponding path program 97 times [2022-03-03 17:44:18,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:18,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426446515] [2022-03-03 17:44:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:18,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:18,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:18,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426446515] [2022-03-03 17:44:18,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426446515] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:18,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935913390] [2022-03-03 17:44:18,429 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:44:18,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:18,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:18,432 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:18,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-03 17:44:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:18,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:44:18,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:18,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:19,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935913390] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:19,493 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:19,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 34 [2022-03-03 17:44:19,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641158665] [2022-03-03 17:44:19,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:19,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:44:19,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:44:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:44:19,494 INFO L87 Difference]: Start difference. First operand 216834 states and 655119 transitions. Second operand has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:23,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:23,041 INFO L93 Difference]: Finished difference Result 244796 states and 738617 transitions. [2022-03-03 17:44:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-03 17:44:23,041 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:44:23,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:23,913 INFO L225 Difference]: With dead ends: 244796 [2022-03-03 17:44:23,913 INFO L226 Difference]: Without dead ends: 244766 [2022-03-03 17:44:23,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3509 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1643, Invalid=8863, Unknown=0, NotChecked=0, Total=10506 [2022-03-03 17:44:23,914 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 693 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:23,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 2570 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:44:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244766 states. [2022-03-03 17:44:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244766 to 236182. [2022-03-03 17:44:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236182 states, 236181 states have (on average 3.026348436157015) internal successors, (714766), 236181 states have internal predecessors, (714766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236182 states to 236182 states and 714766 transitions. [2022-03-03 17:44:32,824 INFO L78 Accepts]: Start accepts. Automaton has 236182 states and 714766 transitions. Word has length 79 [2022-03-03 17:44:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:32,825 INFO L470 AbstractCegarLoop]: Abstraction has 236182 states and 714766 transitions. [2022-03-03 17:44:32,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:32,825 INFO L276 IsEmpty]: Start isEmpty. Operand 236182 states and 714766 transitions. [2022-03-03 17:44:33,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:44:33,395 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:33,395 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:33,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:33,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:33,617 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:33,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:33,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1332594567, now seen corresponding path program 98 times [2022-03-03 17:44:33,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:33,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001146469] [2022-03-03 17:44:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:33,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:34,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:34,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001146469] [2022-03-03 17:44:34,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001146469] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:34,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046890164] [2022-03-03 17:44:34,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:44:34,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:34,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:34,160 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:34,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-03 17:44:34,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:44:34,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:34,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:44:34,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:34,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:35,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046890164] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:35,233 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:35,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2022-03-03 17:44:35,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853496277] [2022-03-03 17:44:35,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:35,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:44:35,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:44:35,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:44:35,235 INFO L87 Difference]: Start difference. First operand 236182 states and 714766 transitions. Second operand has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:38,923 INFO L93 Difference]: Finished difference Result 276005 states and 836099 transitions. [2022-03-03 17:44:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-03 17:44:38,923 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:44:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:40,330 INFO L225 Difference]: With dead ends: 276005 [2022-03-03 17:44:40,330 INFO L226 Difference]: Without dead ends: 275921 [2022-03-03 17:44:40,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1362, Invalid=8538, Unknown=0, NotChecked=0, Total=9900 [2022-03-03 17:44:40,330 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 637 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:40,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 3099 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:44:40,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275921 states. [2022-03-03 17:44:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275921 to 272058. [2022-03-03 17:44:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272058 states, 272057 states have (on average 3.0352205603972697) internal successors, (825753), 272057 states have internal predecessors, (825753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272058 states to 272058 states and 825753 transitions. [2022-03-03 17:44:49,069 INFO L78 Accepts]: Start accepts. Automaton has 272058 states and 825753 transitions. Word has length 79 [2022-03-03 17:44:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:49,070 INFO L470 AbstractCegarLoop]: Abstraction has 272058 states and 825753 transitions. [2022-03-03 17:44:49,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 272058 states and 825753 transitions. [2022-03-03 17:44:49,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:44:49,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:49,953 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:44:50,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:50,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:50,154 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:50,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:50,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1858806017, now seen corresponding path program 99 times [2022-03-03 17:44:50,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:50,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138019058] [2022-03-03 17:44:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:50,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:50,259 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:50,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138019058] [2022-03-03 17:44:50,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138019058] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:50,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240006776] [2022-03-03 17:44:50,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:44:50,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:50,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:50,262 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:44:50,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-03 17:44:50,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 17:44:50,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:50,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:44:50,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:50,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:51,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240006776] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:51,135 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:51,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-03-03 17:44:51,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392361009] [2022-03-03 17:44:51,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:51,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 17:44:51,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:51,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 17:44:51,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:44:51,136 INFO L87 Difference]: Start difference. First operand 272058 states and 825753 transitions. Second operand has 36 states, 36 states have (on average 4.333333333333333) internal successors, (156), 36 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:44:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:55,603 INFO L93 Difference]: Finished difference Result 316013 states and 957580 transitions. [2022-03-03 17:44:55,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-03 17:44:55,603 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.333333333333333) internal successors, (156), 36 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:44:55,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:57,224 INFO L225 Difference]: With dead ends: 316013 [2022-03-03 17:44:57,225 INFO L226 Difference]: Without dead ends: 315983 [2022-03-03 17:44:57,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4698 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2455, Invalid=10427, Unknown=0, NotChecked=0, Total=12882 [2022-03-03 17:44:57,225 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 758 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:57,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 2538 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:44:57,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315983 states. [2022-03-03 17:45:06,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315983 to 278146. [2022-03-03 17:45:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278146 states, 278145 states have (on average 3.037318664725233) internal successors, (844815), 278145 states have internal predecessors, (844815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278146 states to 278146 states and 844815 transitions. [2022-03-03 17:45:08,645 INFO L78 Accepts]: Start accepts. Automaton has 278146 states and 844815 transitions. Word has length 79 [2022-03-03 17:45:08,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:08,645 INFO L470 AbstractCegarLoop]: Abstraction has 278146 states and 844815 transitions. [2022-03-03 17:45:08,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.333333333333333) internal successors, (156), 36 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:08,645 INFO L276 IsEmpty]: Start isEmpty. Operand 278146 states and 844815 transitions. [2022-03-03 17:45:09,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:45:09,496 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:09,496 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:09,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-03-03 17:45:09,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-03-03 17:45:09,715 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1185944259, now seen corresponding path program 100 times [2022-03-03 17:45:09,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:09,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586226387] [2022-03-03 17:45:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:09,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:09,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586226387] [2022-03-03 17:45:09,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586226387] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:09,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303393968] [2022-03-03 17:45:09,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:45:09,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:09,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:09,843 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:45:09,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-03 17:45:09,943 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:45:09,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:09,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:45:09,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:10,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:10,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303393968] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:10,638 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:10,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2022-03-03 17:45:10,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189426645] [2022-03-03 17:45:10,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:10,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:45:10,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:10,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:45:10,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:45:10,639 INFO L87 Difference]: Start difference. First operand 278146 states and 844815 transitions. Second operand has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:15,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:15,385 INFO L93 Difference]: Finished difference Result 386879 states and 1170941 transitions. [2022-03-03 17:45:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-03 17:45:15,386 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:45:15,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:17,365 INFO L225 Difference]: With dead ends: 386879 [2022-03-03 17:45:17,365 INFO L226 Difference]: Without dead ends: 386807 [2022-03-03 17:45:17,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4305 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1924, Invalid=10958, Unknown=0, NotChecked=0, Total=12882 [2022-03-03 17:45:17,366 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 880 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:17,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 2010 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:45:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386807 states. [2022-03-03 17:45:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386807 to 278590. [2022-03-03 17:45:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278590 states, 278589 states have (on average 3.0373632842646336) internal successors, (846176), 278589 states have internal predecessors, (846176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:28,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278590 states to 278590 states and 846176 transitions. [2022-03-03 17:45:28,693 INFO L78 Accepts]: Start accepts. Automaton has 278590 states and 846176 transitions. Word has length 79 [2022-03-03 17:45:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:28,694 INFO L470 AbstractCegarLoop]: Abstraction has 278590 states and 846176 transitions. [2022-03-03 17:45:28,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:28,694 INFO L276 IsEmpty]: Start isEmpty. Operand 278590 states and 846176 transitions. [2022-03-03 17:45:29,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-03 17:45:29,980 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:29,980 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:30,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:30,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-03-03 17:45:30,195 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:30,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:30,196 INFO L85 PathProgramCache]: Analyzing trace with hash 657711439, now seen corresponding path program 101 times [2022-03-03 17:45:30,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:30,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057776430] [2022-03-03 17:45:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:30,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:30,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:30,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057776430] [2022-03-03 17:45:30,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057776430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:30,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458690661] [2022-03-03 17:45:30,383 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:45:30,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:30,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:30,385 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:45:30,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-03 17:45:30,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 17:45:30,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:30,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 17:45:30,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:30,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:31,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458690661] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:31,532 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:31,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 38 [2022-03-03 17:45:31,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004793175] [2022-03-03 17:45:31,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:31,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:45:31,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:31,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:45:31,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:45:31,534 INFO L87 Difference]: Start difference. First operand 278590 states and 846176 transitions. Second operand has 38 states, 38 states have (on average 3.8421052631578947) internal successors, (146), 38 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:35,587 INFO L93 Difference]: Finished difference Result 358418 states and 1079515 transitions. [2022-03-03 17:45:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 17:45:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.8421052631578947) internal successors, (146), 38 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-03-03 17:45:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:37,360 INFO L225 Difference]: With dead ends: 358418 [2022-03-03 17:45:37,361 INFO L226 Difference]: Without dead ends: 358298 [2022-03-03 17:45:37,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1169, Invalid=5971, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 17:45:37,361 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 708 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:37,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 1913 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:45:37,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358298 states. [2022-03-03 17:45:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358298 to 279438. [2022-03-03 17:45:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279438 states, 279437 states have (on average 3.036476916084842) internal successors, (848504), 279437 states have internal predecessors, (848504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279438 states to 279438 states and 848504 transitions. [2022-03-03 17:45:48,011 INFO L78 Accepts]: Start accepts. Automaton has 279438 states and 848504 transitions. Word has length 79 [2022-03-03 17:45:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:48,012 INFO L470 AbstractCegarLoop]: Abstraction has 279438 states and 848504 transitions. [2022-03-03 17:45:48,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.8421052631578947) internal successors, (146), 38 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 279438 states and 848504 transitions. [2022-03-03 17:45:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-03 17:45:48,900 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:48,900 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:48,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-03 17:45:49,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:49,103 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:49,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1319017343, now seen corresponding path program 102 times [2022-03-03 17:45:49,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:49,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63953054] [2022-03-03 17:45:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:49,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:49,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:49,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63953054] [2022-03-03 17:45:49,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63953054] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:49,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259105552] [2022-03-03 17:45:49,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:45:49,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:49,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:49,297 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:45:49,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-03 17:45:49,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:45:49,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:49,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:45:49,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:49,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:50,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259105552] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:50,109 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:50,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 40 [2022-03-03 17:45:50,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283345741] [2022-03-03 17:45:50,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:50,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 17:45:50,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:50,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 17:45:50,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1324, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:45:50,111 INFO L87 Difference]: Start difference. First operand 279438 states and 848504 transitions. Second operand has 40 states, 40 states have (on average 4.55) internal successors, (182), 40 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:45:57,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:57,684 INFO L93 Difference]: Finished difference Result 339155 states and 1023786 transitions. [2022-03-03 17:45:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-03-03 17:45:57,684 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.55) internal successors, (182), 40 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-03-03 17:45:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:59,281 INFO L225 Difference]: With dead ends: 339155 [2022-03-03 17:45:59,281 INFO L226 Difference]: Without dead ends: 339080 [2022-03-03 17:45:59,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17172 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=7715, Invalid=39591, Unknown=0, NotChecked=0, Total=47306 [2022-03-03 17:45:59,283 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 2064 mSDsluCounter, 4330 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:59,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2064 Valid, 4436 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:45:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339080 states. [2022-03-03 17:46:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339080 to 282652. [2022-03-03 17:46:07,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282652 states, 282651 states have (on average 3.0356800435873215) internal successors, (858038), 282651 states have internal predecessors, (858038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:10,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282652 states to 282652 states and 858038 transitions. [2022-03-03 17:46:10,665 INFO L78 Accepts]: Start accepts. Automaton has 282652 states and 858038 transitions. Word has length 84 [2022-03-03 17:46:10,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:10,665 INFO L470 AbstractCegarLoop]: Abstraction has 282652 states and 858038 transitions. [2022-03-03 17:46:10,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.55) internal successors, (182), 40 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 282652 states and 858038 transitions. [2022-03-03 17:46:11,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-03 17:46:11,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:11,472 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:11,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:11,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:11,691 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash 59278313, now seen corresponding path program 103 times [2022-03-03 17:46:11,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:11,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253891970] [2022-03-03 17:46:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:11,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:11,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253891970] [2022-03-03 17:46:11,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253891970] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:11,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113003620] [2022-03-03 17:46:11,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:46:11,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:11,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:11,912 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:11,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-03 17:46:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:12,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:46:12,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:12,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:13,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113003620] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:13,404 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:13,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 15] total 41 [2022-03-03 17:46:13,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176561640] [2022-03-03 17:46:13,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:13,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:46:13,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:13,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:46:13,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:46:13,406 INFO L87 Difference]: Start difference. First operand 282652 states and 858038 transitions. Second operand has 41 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 41 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:18,378 INFO L93 Difference]: Finished difference Result 323469 states and 980018 transitions. [2022-03-03 17:46:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-03 17:46:18,379 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 41 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-03-03 17:46:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:19,536 INFO L225 Difference]: With dead ends: 323469 [2022-03-03 17:46:19,536 INFO L226 Difference]: Without dead ends: 323394 [2022-03-03 17:46:19,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4984 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3168, Invalid=12582, Unknown=0, NotChecked=0, Total=15750 [2022-03-03 17:46:19,537 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 873 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 3741 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:19,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 3741 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:46:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323394 states. [2022-03-03 17:46:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323394 to 282272. [2022-03-03 17:46:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282272 states, 282271 states have (on average 3.0357528757824928) internal successors, (856905), 282271 states have internal predecessors, (856905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:29,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282272 states to 282272 states and 856905 transitions. [2022-03-03 17:46:29,919 INFO L78 Accepts]: Start accepts. Automaton has 282272 states and 856905 transitions. Word has length 84 [2022-03-03 17:46:29,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:29,919 INFO L470 AbstractCegarLoop]: Abstraction has 282272 states and 856905 transitions. [2022-03-03 17:46:29,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 41 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:29,919 INFO L276 IsEmpty]: Start isEmpty. Operand 282272 states and 856905 transitions. [2022-03-03 17:46:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-03 17:46:30,951 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:30,951 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:30,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:31,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-03-03 17:46:31,151 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:31,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1216501669, now seen corresponding path program 104 times [2022-03-03 17:46:31,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:31,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664510246] [2022-03-03 17:46:31,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:31,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:31,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:31,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664510246] [2022-03-03 17:46:31,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664510246] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:31,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342266511] [2022-03-03 17:46:31,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:46:31,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:31,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:31,355 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:31,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-03 17:46:31,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:46:31,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:31,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:46:31,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:31,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:32,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342266511] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:32,408 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:32,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 42 [2022-03-03 17:46:32,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371721900] [2022-03-03 17:46:32,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:32,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 17:46:32,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:32,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 17:46:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:46:32,409 INFO L87 Difference]: Start difference. First operand 282272 states and 856905 transitions. Second operand has 42 states, 42 states have (on average 4.595238095238095) internal successors, (193), 42 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:46:38,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:38,047 INFO L93 Difference]: Finished difference Result 324372 states and 982705 transitions. [2022-03-03 17:46:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-03 17:46:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.595238095238095) internal successors, (193), 42 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-03-03 17:46:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:39,230 INFO L225 Difference]: With dead ends: 324372 [2022-03-03 17:46:39,231 INFO L226 Difference]: Without dead ends: 324252 [2022-03-03 17:46:39,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8451 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5066, Invalid=20694, Unknown=0, NotChecked=0, Total=25760 [2022-03-03 17:46:39,232 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 1041 mSDsluCounter, 4189 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 4234 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:39,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 4234 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:46:39,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324252 states.