/usr/bin/java -Xmx16000000000 -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/pthread-deagle/floating_read-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 03:35:30,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:35:30,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:35:30,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 03:35:30,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 03:35:30,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 03:35:30,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 03:35:30,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 03:35:30,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 03:35:30,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 03:35:30,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 03:35:30,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 03:35:30,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 03:35:30,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 03:35:30,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 03:35:30,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 03:35:30,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 03:35:30,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 03:35:30,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 03:35:30,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 03:35:30,674 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 [2022-01-18 03:35:30,711 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:35:30,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:35:30,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:35:30,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:35:30,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:35:30,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:35:30,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:35:30,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:35:30,713 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:35:30,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:35:30,714 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:35:30,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:35:30,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:35:30,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:35:30,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:35:30,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:35:30,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:35:30,715 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:35:30,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:35:30,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:35:30,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:35:30,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:35:30,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:35:30,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:35:30,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:35:30,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:35:30,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:35:30,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:35:30,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:35:30,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:35:30,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:35:30,717 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:35:30,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:35:30,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:35:30,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:35:30,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:35:30,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:35:30,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 03:35:30,957 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 03:35:30,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/floating_read-5.i [2022-01-18 03:35:31,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c826626/5f4c1356abeb455cbe203ec7662dab04/FLAG02c995612 [2022-01-18 03:35:31,402 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 03:35:31,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/floating_read-5.i [2022-01-18 03:35:31,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c826626/5f4c1356abeb455cbe203ec7662dab04/FLAG02c995612 [2022-01-18 03:35:31,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c826626/5f4c1356abeb455cbe203ec7662dab04 [2022-01-18 03:35:31,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:35:31,428 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 03:35:31,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 03:35:31,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 03:35:31,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 03:35:31,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3cfe53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31, skipping insertion in model container [2022-01-18 03:35:31,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 03:35:31,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 03:35:31,740 WARN L1533 CHandler]: Possible shadowing of function thread [2022-01-18 03:35:31,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/floating_read-5.i[31193,31206] [2022-01-18 03:35:31,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 03:35:31,768 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 03:35:31,806 WARN L1533 CHandler]: Possible shadowing of function thread [2022-01-18 03:35:31,822 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/floating_read-5.i[31193,31206] [2022-01-18 03:35:31,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 03:35:31,858 INFO L208 MainTranslator]: Completed translation [2022-01-18 03:35:31,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31 WrapperNode [2022-01-18 03:35:31,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 03:35:31,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:35:31,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:35:31,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:35:31,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,906 INFO L137 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2022-01-18 03:35:31,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:35:31,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:35:31,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:35:31,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:35:31,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:35:31,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:35:31,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:35:31,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:35:31,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (1/1) ... [2022-01-18 03:35:31,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:35:31,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:35:31,984 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) [2022-01-18 03:35:32,011 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 [2022-01-18 03:35:32,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 03:35:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 03:35:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 03:35:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 03:35:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 03:35:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 03:35:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 03:35:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-01-18 03:35:32,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-01-18 03:35:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 03:35:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:35:32,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:35:32,034 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 03:35:32,122 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:35:32,123 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:35:32,242 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:35:32,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:35:32,248 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 03:35:32,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:35:32 BoogieIcfgContainer [2022-01-18 03:35:32,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:35:32,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:35:32,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:35:32,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:35:32,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 03:35:31" (1/3) ... [2022-01-18 03:35:32,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5d7da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:35:32, skipping insertion in model container [2022-01-18 03:35:32,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:35:31" (2/3) ... [2022-01-18 03:35:32,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5d7da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:35:32, skipping insertion in model container [2022-01-18 03:35:32,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:35:32" (3/3) ... [2022-01-18 03:35:32,256 INFO L111 eAbstractionObserver]: Analyzing ICFG floating_read-5.i [2022-01-18 03:35:32,261 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:35:32,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:35:32,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 03:35:32,261 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:35:32,284 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,284 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,285 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,285 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,285 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,285 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,285 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,286 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,286 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,286 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,286 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,286 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,287 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,287 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,287 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,287 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,288 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,288 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,289 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,289 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,292 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,292 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,292 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,292 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,292 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,298 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-18 03:35:32,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:35:32,341 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, 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 [2022-01-18 03:35:32,342 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 03:35:32,351 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 59 transitions, 126 flow [2022-01-18 03:35:32,374 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 109 states have (on average 1.6788990825688073) internal successors, (183), 111 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 109 states have (on average 1.6788990825688073) internal successors, (183), 111 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:32,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 03:35:32,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:32,382 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] [2022-01-18 03:35:32,383 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:32,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1781753840, now seen corresponding path program 1 times [2022-01-18 03:35:32,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:32,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442398541] [2022-01-18 03:35:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:32,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:32,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:32,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442398541] [2022-01-18 03:35:32,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442398541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:32,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:32,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:35:32,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269702331] [2022-01-18 03:35:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:32,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 03:35:32,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:32,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 03:35:32,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 03:35:32,593 INFO L87 Difference]: Start difference. First operand has 112 states, 109 states have (on average 1.6788990825688073) internal successors, (183), 111 states have internal predecessors, (183), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:32,617 INFO L93 Difference]: Finished difference Result 112 states and 176 transitions. [2022-01-18 03:35:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 03:35:32,619 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 03:35:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:32,629 INFO L225 Difference]: With dead ends: 112 [2022-01-18 03:35:32,630 INFO L226 Difference]: Without dead ends: 112 [2022-01-18 03:35:32,631 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 [2022-01-18 03:35:32,635 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:32,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-18 03:35:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-01-18 03:35:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.614678899082569) internal successors, (176), 111 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) [2022-01-18 03:35:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 176 transitions. [2022-01-18 03:35:32,691 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 176 transitions. Word has length 23 [2022-01-18 03:35:32,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:32,691 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 176 transitions. [2022-01-18 03:35:32,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 176 transitions. [2022-01-18 03:35:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 03:35:32,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:32,694 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] [2022-01-18 03:35:32,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 03:35:32,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:32,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:32,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1781754801, now seen corresponding path program 1 times [2022-01-18 03:35:32,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:32,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688966405] [2022-01-18 03:35:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:32,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:32,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:32,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688966405] [2022-01-18 03:35:32,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688966405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:32,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:32,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:35:32,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863156555] [2022-01-18 03:35:32,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:32,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:35:32,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:32,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:35:32,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:32,805 INFO L87 Difference]: Start difference. First operand 112 states and 176 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:32,822 INFO L93 Difference]: Finished difference Result 109 states and 173 transitions. [2022-01-18 03:35:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:35:32,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 03:35:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:32,824 INFO L225 Difference]: With dead ends: 109 [2022-01-18 03:35:32,824 INFO L226 Difference]: Without dead ends: 109 [2022-01-18 03:35:32,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:32,826 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:32,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 64 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:32,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-01-18 03:35:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-01-18 03:35:32,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.6168224299065421) internal successors, (173), 108 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 173 transitions. [2022-01-18 03:35:32,834 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 173 transitions. Word has length 23 [2022-01-18 03:35:32,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:32,834 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 173 transitions. [2022-01-18 03:35:32,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:32,835 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 173 transitions. [2022-01-18 03:35:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 03:35:32,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:32,836 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] [2022-01-18 03:35:32,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 03:35:32,836 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash -315270955, now seen corresponding path program 1 times [2022-01-18 03:35:32,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:32,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877711571] [2022-01-18 03:35:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:32,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:35:32,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:32,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877711571] [2022-01-18 03:35:32,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877711571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:32,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:32,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:35:32,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195256754] [2022-01-18 03:35:32,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:32,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:35:32,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:35:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:32,888 INFO L87 Difference]: Start difference. First operand 109 states and 173 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:32,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:32,899 INFO L93 Difference]: Finished difference Result 103 states and 161 transitions. [2022-01-18 03:35:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:35:32,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-18 03:35:32,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:32,901 INFO L225 Difference]: With dead ends: 103 [2022-01-18 03:35:32,901 INFO L226 Difference]: Without dead ends: 103 [2022-01-18 03:35:32,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:32,902 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:32,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 61 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-18 03:35:32,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-01-18 03:35:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.5940594059405941) internal successors, (161), 102 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) [2022-01-18 03:35:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 161 transitions. [2022-01-18 03:35:32,910 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 161 transitions. Word has length 33 [2022-01-18 03:35:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:32,911 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 161 transitions. [2022-01-18 03:35:32,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 161 transitions. [2022-01-18 03:35:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 03:35:32,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:32,912 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 03:35:32,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 03:35:32,912 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:32,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:32,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1968634815, now seen corresponding path program 1 times [2022-01-18 03:35:32,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:32,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201193975] [2022-01-18 03:35:32,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:32,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:35:32,933 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:35:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:35:32,962 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:35:32,962 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:35:32,963 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-01-18 03:35:32,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-18 03:35:32,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 03:35:32,967 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-18 03:35:32,968 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:35:32,968 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-01-18 03:35:32,976 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,977 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,977 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,977 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,977 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,977 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,977 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,977 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,978 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,978 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,978 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,978 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,978 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,978 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,979 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,979 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,979 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,979 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,979 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,979 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,980 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,980 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,980 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,980 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,980 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,980 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,980 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,980 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,981 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,981 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,981 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,981 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,981 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,981 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,981 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,982 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,982 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,982 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,982 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,982 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,983 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,983 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,983 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,983 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,983 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,984 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,984 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,984 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,984 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,984 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:32,987 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 03:35:32,988 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:35:32,989 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, 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 [2022-01-18 03:35:32,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 03:35:32,991 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 66 transitions, 150 flow [2022-01-18 03:35:33,031 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 610 states, 606 states have (on average 2.5115511551155114) internal successors, (1522), 609 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 610 states, 606 states have (on average 2.5115511551155114) internal successors, (1522), 609 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 03:35:33,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:33,034 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] [2022-01-18 03:35:33,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:33,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:33,035 INFO L85 PathProgramCache]: Analyzing trace with hash 775345522, now seen corresponding path program 1 times [2022-01-18 03:35:33,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:33,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141228082] [2022-01-18 03:35:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:33,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:33,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:33,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141228082] [2022-01-18 03:35:33,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141228082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:33,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:33,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:35:33,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919256491] [2022-01-18 03:35:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:33,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 03:35:33,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 03:35:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 03:35:33,061 INFO L87 Difference]: Start difference. First operand has 610 states, 606 states have (on average 2.5115511551155114) internal successors, (1522), 609 states have internal predecessors, (1522), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:33,075 INFO L93 Difference]: Finished difference Result 610 states and 1479 transitions. [2022-01-18 03:35:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 03:35:33,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 03:35:33,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:33,084 INFO L225 Difference]: With dead ends: 610 [2022-01-18 03:35:33,084 INFO L226 Difference]: Without dead ends: 610 [2022-01-18 03:35:33,084 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 [2022-01-18 03:35:33,085 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:33,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-01-18 03:35:33,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-01-18 03:35:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 606 states have (on average 2.4405940594059405) internal successors, (1479), 609 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1479 transitions. [2022-01-18 03:35:33,131 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1479 transitions. Word has length 23 [2022-01-18 03:35:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:33,131 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 1479 transitions. [2022-01-18 03:35:33,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1479 transitions. [2022-01-18 03:35:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 03:35:33,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:33,134 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] [2022-01-18 03:35:33,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 03:35:33,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash 775346483, now seen corresponding path program 1 times [2022-01-18 03:35:33,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:33,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870322757] [2022-01-18 03:35:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:33,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:33,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870322757] [2022-01-18 03:35:33,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870322757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:33,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:33,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:35:33,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124151277] [2022-01-18 03:35:33,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:33,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:35:33,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:33,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:35:33,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:33,176 INFO L87 Difference]: Start difference. First operand 610 states and 1479 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:33,197 INFO L93 Difference]: Finished difference Result 607 states and 1476 transitions. [2022-01-18 03:35:33,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:35:33,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 03:35:33,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:33,201 INFO L225 Difference]: With dead ends: 607 [2022-01-18 03:35:33,201 INFO L226 Difference]: Without dead ends: 607 [2022-01-18 03:35:33,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:33,202 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:33,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 76 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:33,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-01-18 03:35:33,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2022-01-18 03:35:33,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 604 states have (on average 2.443708609271523) internal successors, (1476), 606 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1476 transitions. [2022-01-18 03:35:33,221 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1476 transitions. Word has length 23 [2022-01-18 03:35:33,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:33,222 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 1476 transitions. [2022-01-18 03:35:33,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1476 transitions. [2022-01-18 03:35:33,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 03:35:33,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:33,223 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] [2022-01-18 03:35:33,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 03:35:33,223 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1083506660, now seen corresponding path program 1 times [2022-01-18 03:35:33,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:33,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163577590] [2022-01-18 03:35:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:33,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:35:33,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:33,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163577590] [2022-01-18 03:35:33,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163577590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:33,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:33,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:35:33,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651170533] [2022-01-18 03:35:33,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:33,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:35:33,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:33,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:35:33,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:33,275 INFO L87 Difference]: Start difference. First operand 607 states and 1476 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:33,300 INFO L93 Difference]: Finished difference Result 583 states and 1410 transitions. [2022-01-18 03:35:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:35:33,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-18 03:35:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:33,305 INFO L225 Difference]: With dead ends: 583 [2022-01-18 03:35:33,305 INFO L226 Difference]: Without dead ends: 583 [2022-01-18 03:35:33,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:33,306 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 14 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:33,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 72 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:33,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-01-18 03:35:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2022-01-18 03:35:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 580 states have (on average 2.4310344827586206) internal successors, (1410), 582 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1410 transitions. [2022-01-18 03:35:33,333 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1410 transitions. Word has length 33 [2022-01-18 03:35:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:33,333 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 1410 transitions. [2022-01-18 03:35:33,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,334 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1410 transitions. [2022-01-18 03:35:33,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 03:35:33,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:33,335 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] [2022-01-18 03:35:33,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 03:35:33,335 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:33,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2017126046, now seen corresponding path program 1 times [2022-01-18 03:35:33,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:33,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170838367] [2022-01-18 03:35:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:33,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:33,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:33,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170838367] [2022-01-18 03:35:33,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170838367] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:35:33,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372336173] [2022-01-18 03:35:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:33,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:33,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:35:33,423 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) [2022-01-18 03:35:33,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 03:35:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:33,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 03:35:33,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:35:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:33,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:35:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:33,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372336173] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:35:33,747 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:35:33,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 03:35:33,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324378901] [2022-01-18 03:35:33,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:35:33,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 03:35:33,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:33,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 03:35:33,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 03:35:33,749 INFO L87 Difference]: Start difference. First operand 583 states and 1410 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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) [2022-01-18 03:35:33,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:33,839 INFO L93 Difference]: Finished difference Result 481 states and 1155 transitions. [2022-01-18 03:35:33,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 03:35:33,839 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 36 [2022-01-18 03:35:33,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:33,842 INFO L225 Difference]: With dead ends: 481 [2022-01-18 03:35:33,842 INFO L226 Difference]: Without dead ends: 481 [2022-01-18 03:35:33,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 03:35:33,843 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 131 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:33,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 214 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-01-18 03:35:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2022-01-18 03:35:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 2.40625) internal successors, (1155), 480 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1155 transitions. [2022-01-18 03:35:33,854 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1155 transitions. Word has length 36 [2022-01-18 03:35:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:33,855 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 1155 transitions. [2022-01-18 03:35:33,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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) [2022-01-18 03:35:33,855 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1155 transitions. [2022-01-18 03:35:33,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-18 03:35:33,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:33,857 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-18 03:35:33,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 03:35:34,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:34,080 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash 286308789, now seen corresponding path program 1 times [2022-01-18 03:35:34,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:34,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092661034] [2022-01-18 03:35:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:34,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:35:34,102 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:35:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:35:34,117 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:35:34,117 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:35:34,117 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-01-18 03:35:34,117 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-18 03:35:34,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 03:35:34,118 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-18 03:35:34,118 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:35:34,118 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-01-18 03:35:34,133 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,133 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,133 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,133 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,134 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,134 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,134 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,134 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,134 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,134 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,134 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,134 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,134 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,135 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,135 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,135 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,135 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,135 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,135 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,135 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,138 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,139 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,139 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,139 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,139 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,139 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,139 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,139 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,150 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,150 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,151 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,151 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,151 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,151 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,151 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,151 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,151 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,151 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,152 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,152 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,152 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,152 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,152 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,152 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,152 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,152 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,153 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,153 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,153 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,153 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,153 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,153 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,153 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,154 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,154 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,154 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,155 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,155 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,155 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,155 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,159 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,160 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,160 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,160 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,160 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:34,162 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 03:35:34,163 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:35:34,163 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, 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 [2022-01-18 03:35:34,164 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 03:35:34,165 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 73 transitions, 176 flow [2022-01-18 03:35:34,300 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3598 states, 3593 states have (on average 3.352630114110771) internal successors, (12046), 3597 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) [2022-01-18 03:35:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 3598 states, 3593 states have (on average 3.352630114110771) internal successors, (12046), 3597 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) [2022-01-18 03:35:34,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 03:35:34,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:34,313 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] [2022-01-18 03:35:34,314 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:34,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash 898626907, now seen corresponding path program 1 times [2022-01-18 03:35:34,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:34,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446345746] [2022-01-18 03:35:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:34,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:34,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:34,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446345746] [2022-01-18 03:35:34,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446345746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:34,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:34,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:35:34,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78258430] [2022-01-18 03:35:34,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:34,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 03:35:34,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:34,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 03:35:34,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 03:35:34,355 INFO L87 Difference]: Start difference. First operand has 3598 states, 3593 states have (on average 3.352630114110771) internal successors, (12046), 3597 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) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:34,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:34,411 INFO L93 Difference]: Finished difference Result 3598 states and 11787 transitions. [2022-01-18 03:35:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 03:35:34,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 03:35:34,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:34,443 INFO L225 Difference]: With dead ends: 3598 [2022-01-18 03:35:34,443 INFO L226 Difference]: Without dead ends: 3598 [2022-01-18 03:35:34,444 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 [2022-01-18 03:35:34,444 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:34,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2022-01-18 03:35:34,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3598. [2022-01-18 03:35:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3593 states have (on average 3.2805455051489005) internal successors, (11787), 3597 states have internal predecessors, (11787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 11787 transitions. [2022-01-18 03:35:34,623 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 11787 transitions. Word has length 23 [2022-01-18 03:35:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:34,623 INFO L470 AbstractCegarLoop]: Abstraction has 3598 states and 11787 transitions. [2022-01-18 03:35:34,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 11787 transitions. [2022-01-18 03:35:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 03:35:34,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:34,624 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] [2022-01-18 03:35:34,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 03:35:34,624 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:34,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:34,625 INFO L85 PathProgramCache]: Analyzing trace with hash 898627868, now seen corresponding path program 1 times [2022-01-18 03:35:34,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:34,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842046447] [2022-01-18 03:35:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:34,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:34,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:34,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842046447] [2022-01-18 03:35:34,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842046447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:34,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:34,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:35:34,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250505665] [2022-01-18 03:35:34,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:34,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:35:34,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:34,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:35:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:34,659 INFO L87 Difference]: Start difference. First operand 3598 states and 11787 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:34,706 INFO L93 Difference]: Finished difference Result 3595 states and 11784 transitions. [2022-01-18 03:35:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:35:34,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 03:35:34,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:34,730 INFO L225 Difference]: With dead ends: 3595 [2022-01-18 03:35:34,730 INFO L226 Difference]: Without dead ends: 3595 [2022-01-18 03:35:34,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:34,733 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 13 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:34,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 86 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2022-01-18 03:35:34,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3595. [2022-01-18 03:35:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 3591 states have (on average 3.281537176274018) internal successors, (11784), 3594 states have internal predecessors, (11784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 11784 transitions. [2022-01-18 03:35:34,860 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 11784 transitions. Word has length 23 [2022-01-18 03:35:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:34,860 INFO L470 AbstractCegarLoop]: Abstraction has 3595 states and 11784 transitions. [2022-01-18 03:35:34,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 11784 transitions. [2022-01-18 03:35:34,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 03:35:34,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:34,861 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] [2022-01-18 03:35:34,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 03:35:34,861 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:34,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1823512938, now seen corresponding path program 1 times [2022-01-18 03:35:34,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:34,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075675991] [2022-01-18 03:35:34,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:34,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:35:34,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:34,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075675991] [2022-01-18 03:35:34,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075675991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:34,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:34,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:35:34,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762113125] [2022-01-18 03:35:34,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:34,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:35:34,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:34,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:35:34,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:34,905 INFO L87 Difference]: Start difference. First operand 3595 states and 11784 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:34,942 INFO L93 Difference]: Finished difference Result 3517 states and 11502 transitions. [2022-01-18 03:35:34,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:35:34,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-18 03:35:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:34,965 INFO L225 Difference]: With dead ends: 3517 [2022-01-18 03:35:34,965 INFO L226 Difference]: Without dead ends: 3517 [2022-01-18 03:35:34,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:34,966 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 17 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:34,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 81 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2022-01-18 03:35:35,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 3517. [2022-01-18 03:35:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 3513 states have (on average 3.274124679760888) internal successors, (11502), 3516 states have internal predecessors, (11502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 11502 transitions. [2022-01-18 03:35:35,078 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 11502 transitions. Word has length 33 [2022-01-18 03:35:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:35,078 INFO L470 AbstractCegarLoop]: Abstraction has 3517 states and 11502 transitions. [2022-01-18 03:35:35,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 11502 transitions. [2022-01-18 03:35:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 03:35:35,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:35,079 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] [2022-01-18 03:35:35,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 03:35:35,079 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:35,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1943735733, now seen corresponding path program 1 times [2022-01-18 03:35:35,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:35,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358596246] [2022-01-18 03:35:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:35,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:35,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:35,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358596246] [2022-01-18 03:35:35,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358596246] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:35:35,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820935803] [2022-01-18 03:35:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:35,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:35,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:35:35,124 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) [2022-01-18 03:35:35,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 03:35:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:35,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 03:35:35,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:35:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:35,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:35:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:35,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820935803] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:35:35,413 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:35:35,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-01-18 03:35:35,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987194303] [2022-01-18 03:35:35,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:35:35,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 03:35:35,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 03:35:35,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-01-18 03:35:35,415 INFO L87 Difference]: Start difference. First operand 3517 states and 11502 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:35,917 INFO L93 Difference]: Finished difference Result 4684 states and 14991 transitions. [2022-01-18 03:35:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:35:35,918 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 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 36 [2022-01-18 03:35:35,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:35,942 INFO L225 Difference]: With dead ends: 4684 [2022-01-18 03:35:35,942 INFO L226 Difference]: Without dead ends: 4648 [2022-01-18 03:35:35,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=492, Invalid=1230, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 03:35:35,943 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 563 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:35,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 693 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:35:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2022-01-18 03:35:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 4063. [2022-01-18 03:35:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4063 states, 4060 states have (on average 3.246059113300493) internal successors, (13179), 4062 states have internal predecessors, (13179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 13179 transitions. [2022-01-18 03:35:36,138 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 13179 transitions. Word has length 36 [2022-01-18 03:35:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:36,139 INFO L470 AbstractCegarLoop]: Abstraction has 4063 states and 13179 transitions. [2022-01-18 03:35:36,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 13179 transitions. [2022-01-18 03:35:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 03:35:36,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:36,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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] [2022-01-18 03:35:36,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 03:35:36,363 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,SelfDestructingSolverStorable12 [2022-01-18 03:35:36,363 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash -569723489, now seen corresponding path program 1 times [2022-01-18 03:35:36,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:36,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002676378] [2022-01-18 03:35:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:36,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:36,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:36,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002676378] [2022-01-18 03:35:36,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002676378] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:35:36,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363807464] [2022-01-18 03:35:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:36,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:36,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:35:36,422 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) [2022-01-18 03:35:36,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 03:35:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:36,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 03:35:36,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:35:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:36,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:35:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:36,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363807464] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:35:36,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:35:36,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-01-18 03:35:36,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937518296] [2022-01-18 03:35:36,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:35:36,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 03:35:36,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:36,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 03:35:36,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 03:35:36,674 INFO L87 Difference]: Start difference. First operand 4063 states and 13179 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:36,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:36,759 INFO L93 Difference]: Finished difference Result 3397 states and 10971 transitions. [2022-01-18 03:35:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 03:35:36,764 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 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 46 [2022-01-18 03:35:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:36,777 INFO L225 Difference]: With dead ends: 3397 [2022-01-18 03:35:36,778 INFO L226 Difference]: Without dead ends: 3397 [2022-01-18 03:35:36,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:35:36,778 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 229 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:36,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 320 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2022-01-18 03:35:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 2821. [2022-01-18 03:35:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2820 states have (on average 3.2606382978723403) internal successors, (9195), 2820 states have internal predecessors, (9195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 9195 transitions. [2022-01-18 03:35:36,860 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 9195 transitions. Word has length 46 [2022-01-18 03:35:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:36,861 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 9195 transitions. [2022-01-18 03:35:36,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 9195 transitions. [2022-01-18 03:35:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-18 03:35:36,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:36,865 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-01-18 03:35:36,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 03:35:37,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:37,088 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash 176735389, now seen corresponding path program 1 times [2022-01-18 03:35:37,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:37,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742728697] [2022-01-18 03:35:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:37,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:35:37,105 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:35:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:35:37,131 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:35:37,131 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:35:37,131 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-01-18 03:35:37,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-18 03:35:37,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 03:35:37,132 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-01-18 03:35:37,132 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:35:37,132 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-01-18 03:35:37,144 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,144 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,144 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,144 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,144 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,145 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,145 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,145 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,145 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,145 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,145 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,145 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,145 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,145 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,145 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,146 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,147 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,148 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,149 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,150 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,151 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,151 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,151 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,151 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,151 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,151 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,151 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,151 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,152 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,152 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,152 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,152 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,152 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,152 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,152 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,152 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,152 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,153 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,153 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,153 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,153 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,153 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,153 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:37,155 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 03:35:37,156 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:35:37,156 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, 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 [2022-01-18 03:35:37,156 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 03:35:37,162 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 80 transitions, 204 flow [2022-01-18 03:35:37,865 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21526 states, 21520 states have (on average 4.188197026022305) internal successors, (90130), 21525 states have internal predecessors, (90130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:37,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 21526 states, 21520 states have (on average 4.188197026022305) internal successors, (90130), 21525 states have internal predecessors, (90130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:37,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 03:35:37,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:37,923 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] [2022-01-18 03:35:37,923 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:37,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2143369301, now seen corresponding path program 1 times [2022-01-18 03:35:37,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:37,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280094760] [2022-01-18 03:35:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:37,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:37,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:37,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280094760] [2022-01-18 03:35:37,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280094760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:37,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:37,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:35:37,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355089156] [2022-01-18 03:35:37,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:37,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 03:35:37,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 03:35:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 03:35:37,999 INFO L87 Difference]: Start difference. First operand has 21526 states, 21520 states have (on average 4.188197026022305) internal successors, (90130), 21525 states have internal predecessors, (90130), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:38,183 INFO L93 Difference]: Finished difference Result 21526 states and 88575 transitions. [2022-01-18 03:35:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 03:35:38,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 03:35:38,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:38,321 INFO L225 Difference]: With dead ends: 21526 [2022-01-18 03:35:38,321 INFO L226 Difference]: Without dead ends: 21526 [2022-01-18 03:35:38,322 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 [2022-01-18 03:35:38,322 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:38,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21526 states. [2022-01-18 03:35:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21526 to 21526. [2022-01-18 03:35:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21526 states, 21520 states have (on average 4.115938661710037) internal successors, (88575), 21525 states have internal predecessors, (88575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21526 states to 21526 states and 88575 transitions. [2022-01-18 03:35:39,766 INFO L78 Accepts]: Start accepts. Automaton has 21526 states and 88575 transitions. Word has length 23 [2022-01-18 03:35:39,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:39,767 INFO L470 AbstractCegarLoop]: Abstraction has 21526 states and 88575 transitions. [2022-01-18 03:35:39,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 21526 states and 88575 transitions. [2022-01-18 03:35:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 03:35:39,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:39,768 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] [2022-01-18 03:35:39,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 03:35:39,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:39,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2143368340, now seen corresponding path program 1 times [2022-01-18 03:35:39,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:39,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641694496] [2022-01-18 03:35:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:39,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:39,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:39,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641694496] [2022-01-18 03:35:39,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641694496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:39,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:39,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:35:39,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202711026] [2022-01-18 03:35:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:39,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:35:39,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:39,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:35:39,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:39,791 INFO L87 Difference]: Start difference. First operand 21526 states and 88575 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:40,047 INFO L93 Difference]: Finished difference Result 21523 states and 88572 transitions. [2022-01-18 03:35:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:35:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 03:35:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:40,340 INFO L225 Difference]: With dead ends: 21523 [2022-01-18 03:35:40,340 INFO L226 Difference]: Without dead ends: 21523 [2022-01-18 03:35:40,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:40,342 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 13 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:40,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 96 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:40,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21523 states. [2022-01-18 03:35:41,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21523 to 21523. [2022-01-18 03:35:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21523 states, 21518 states have (on average 4.116181801282647) internal successors, (88572), 21522 states have internal predecessors, (88572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21523 states to 21523 states and 88572 transitions. [2022-01-18 03:35:41,353 INFO L78 Accepts]: Start accepts. Automaton has 21523 states and 88572 transitions. Word has length 23 [2022-01-18 03:35:41,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:41,353 INFO L470 AbstractCegarLoop]: Abstraction has 21523 states and 88572 transitions. [2022-01-18 03:35:41,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:41,353 INFO L276 IsEmpty]: Start isEmpty. Operand 21523 states and 88572 transitions. [2022-01-18 03:35:41,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 03:35:41,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:41,372 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] [2022-01-18 03:35:41,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 03:35:41,372 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash -184146753, now seen corresponding path program 1 times [2022-01-18 03:35:41,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:41,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747922429] [2022-01-18 03:35:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:41,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:35:41,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:41,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747922429] [2022-01-18 03:35:41,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747922429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:41,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:41,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:35:41,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029347477] [2022-01-18 03:35:41,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:41,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:35:41,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:41,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:35:41,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:41,409 INFO L87 Difference]: Start difference. First operand 21523 states and 88572 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:41,583 INFO L93 Difference]: Finished difference Result 21283 states and 87480 transitions. [2022-01-18 03:35:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:35:41,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-18 03:35:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:41,817 INFO L225 Difference]: With dead ends: 21283 [2022-01-18 03:35:41,817 INFO L226 Difference]: Without dead ends: 21283 [2022-01-18 03:35:41,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:35:41,833 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:41,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 90 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21283 states. [2022-01-18 03:35:42,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21283 to 21283. [2022-01-18 03:35:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21283 states, 21278 states have (on average 4.1112886549487735) internal successors, (87480), 21282 states have internal predecessors, (87480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21283 states to 21283 states and 87480 transitions. [2022-01-18 03:35:42,511 INFO L78 Accepts]: Start accepts. Automaton has 21283 states and 87480 transitions. Word has length 33 [2022-01-18 03:35:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:42,512 INFO L470 AbstractCegarLoop]: Abstraction has 21283 states and 87480 transitions. [2022-01-18 03:35:42,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:42,512 INFO L276 IsEmpty]: Start isEmpty. Operand 21283 states and 87480 transitions. [2022-01-18 03:35:42,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 03:35:42,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:42,513 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] [2022-01-18 03:35:42,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 03:35:42,513 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:42,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1187205763, now seen corresponding path program 1 times [2022-01-18 03:35:42,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:42,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883496838] [2022-01-18 03:35:42,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:42,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:42,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:42,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883496838] [2022-01-18 03:35:42,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883496838] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:35:42,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429770749] [2022-01-18 03:35:42,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:42,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:42,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:35:42,552 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) [2022-01-18 03:35:42,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 03:35:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:42,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 03:35:42,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:35:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:42,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:35:42,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:42,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429770749] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:35:42,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:35:42,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 03:35:42,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20306706] [2022-01-18 03:35:42,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:35:42,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 03:35:42,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:42,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 03:35:42,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 03:35:42,741 INFO L87 Difference]: Start difference. First operand 21283 states and 87480 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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) [2022-01-18 03:35:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:42,926 INFO L93 Difference]: Finished difference Result 21181 states and 87225 transitions. [2022-01-18 03:35:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 03:35:42,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 36 [2022-01-18 03:35:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:43,212 INFO L225 Difference]: With dead ends: 21181 [2022-01-18 03:35:43,212 INFO L226 Difference]: Without dead ends: 21181 [2022-01-18 03:35:43,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 03:35:43,213 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 176 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:43,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 261 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:35:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2022-01-18 03:35:43,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 21181. [2022-01-18 03:35:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21181 states, 21178 states have (on average 4.118660874492398) internal successors, (87225), 21180 states have internal predecessors, (87225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21181 states to 21181 states and 87225 transitions. [2022-01-18 03:35:44,100 INFO L78 Accepts]: Start accepts. Automaton has 21181 states and 87225 transitions. Word has length 36 [2022-01-18 03:35:44,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:44,101 INFO L470 AbstractCegarLoop]: Abstraction has 21181 states and 87225 transitions. [2022-01-18 03:35:44,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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) [2022-01-18 03:35:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 21181 states and 87225 transitions. [2022-01-18 03:35:44,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 03:35:44,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:44,106 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-18 03:35:44,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 03:35:44,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:44,307 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:44,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:44,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1944197442, now seen corresponding path program 1 times [2022-01-18 03:35:44,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:44,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493252677] [2022-01-18 03:35:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:44,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:44,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:44,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493252677] [2022-01-18 03:35:44,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493252677] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:35:44,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683722627] [2022-01-18 03:35:44,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:44,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:44,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:35:44,386 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) [2022-01-18 03:35:44,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 03:35:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:44,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 03:35:44,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:35:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:44,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:35:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:44,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683722627] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:35:44,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:35:44,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-01-18 03:35:44,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944826151] [2022-01-18 03:35:44,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:35:44,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 03:35:44,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 03:35:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 03:35:44,778 INFO L87 Difference]: Start difference. First operand 21181 states and 87225 transitions. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:45,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:45,226 INFO L93 Difference]: Finished difference Result 30046 states and 121167 transitions. [2022-01-18 03:35:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 03:35:45,226 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 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 56 [2022-01-18 03:35:45,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:45,336 INFO L225 Difference]: With dead ends: 30046 [2022-01-18 03:35:45,336 INFO L226 Difference]: Without dead ends: 29938 [2022-01-18 03:35:45,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2022-01-18 03:35:45,337 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 596 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:45,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 656 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:35:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29938 states. [2022-01-18 03:35:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29938 to 25807. [2022-01-18 03:35:46,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25807 states, 25804 states have (on average 4.07657727484111) internal successors, (105192), 25806 states have internal predecessors, (105192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25807 states to 25807 states and 105192 transitions. [2022-01-18 03:35:46,551 INFO L78 Accepts]: Start accepts. Automaton has 25807 states and 105192 transitions. Word has length 56 [2022-01-18 03:35:46,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:46,552 INFO L470 AbstractCegarLoop]: Abstraction has 25807 states and 105192 transitions. [2022-01-18 03:35:46,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:46,552 INFO L276 IsEmpty]: Start isEmpty. Operand 25807 states and 105192 transitions. [2022-01-18 03:35:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 03:35:46,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:46,559 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-18 03:35:46,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 03:35:46,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:46,761 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:46,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:46,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1730070023, now seen corresponding path program 1 times [2022-01-18 03:35:46,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:46,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122461119] [2022-01-18 03:35:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:46,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 03:35:46,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:46,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122461119] [2022-01-18 03:35:46,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122461119] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:35:46,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779975574] [2022-01-18 03:35:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:46,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:46,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:35:46,864 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) [2022-01-18 03:35:46,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 03:35:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:46,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 03:35:46,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:35:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 03:35:47,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:35:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 03:35:47,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779975574] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:35:47,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:35:47,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 03:35:47,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320919410] [2022-01-18 03:35:47,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:35:47,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:35:47,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:35:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:35:47,254 INFO L87 Difference]: Start difference. First operand 25807 states and 105192 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:48,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:48,068 INFO L93 Difference]: Finished difference Result 33286 states and 133785 transitions. [2022-01-18 03:35:48,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:35:48,069 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 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 56 [2022-01-18 03:35:48,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:48,188 INFO L225 Difference]: With dead ends: 33286 [2022-01-18 03:35:48,188 INFO L226 Difference]: Without dead ends: 32962 [2022-01-18 03:35:48,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=637, Invalid=2333, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:35:48,190 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 902 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:48,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 1037 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:35:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32962 states. [2022-01-18 03:35:49,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32962 to 26203. [2022-01-18 03:35:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26203 states, 26200 states have (on average 4.081488549618321) internal successors, (106935), 26202 states have internal predecessors, (106935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26203 states to 26203 states and 106935 transitions. [2022-01-18 03:35:49,153 INFO L78 Accepts]: Start accepts. Automaton has 26203 states and 106935 transitions. Word has length 56 [2022-01-18 03:35:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:49,153 INFO L470 AbstractCegarLoop]: Abstraction has 26203 states and 106935 transitions. [2022-01-18 03:35:49,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:49,153 INFO L276 IsEmpty]: Start isEmpty. Operand 26203 states and 106935 transitions. [2022-01-18 03:35:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 03:35:49,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:49,158 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-18 03:35:49,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 03:35:49,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:49,372 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:49,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:49,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1109338339, now seen corresponding path program 1 times [2022-01-18 03:35:49,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:49,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943992601] [2022-01-18 03:35:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:49,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:49,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:49,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943992601] [2022-01-18 03:35:49,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943992601] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:35:49,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704012169] [2022-01-18 03:35:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:49,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:49,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:35:49,458 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) [2022-01-18 03:35:49,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 03:35:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:49,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 03:35:49,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:35:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:49,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:35:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:49,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704012169] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:35:49,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:35:49,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 21 [2022-01-18 03:35:49,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492965354] [2022-01-18 03:35:49,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:35:49,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:35:49,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:49,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:35:49,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:35:49,835 INFO L87 Difference]: Start difference. First operand 26203 states and 106935 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:50,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:50,913 INFO L93 Difference]: Finished difference Result 26824 states and 108546 transitions. [2022-01-18 03:35:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 03:35:50,914 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 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 56 [2022-01-18 03:35:50,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:35:51,270 INFO L225 Difference]: With dead ends: 26824 [2022-01-18 03:35:51,270 INFO L226 Difference]: Without dead ends: 26824 [2022-01-18 03:35:51,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1026, Invalid=4376, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 03:35:51,272 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1613 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:35:51,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 1352 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:35:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26824 states. [2022-01-18 03:35:51,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26824 to 16861. [2022-01-18 03:35:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16861 states, 16860 states have (on average 4.100533807829182) internal successors, (69135), 16860 states have internal predecessors, (69135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16861 states to 16861 states and 69135 transitions. [2022-01-18 03:35:51,747 INFO L78 Accepts]: Start accepts. Automaton has 16861 states and 69135 transitions. Word has length 56 [2022-01-18 03:35:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:35:51,747 INFO L470 AbstractCegarLoop]: Abstraction has 16861 states and 69135 transitions. [2022-01-18 03:35:51,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand 16861 states and 69135 transitions. [2022-01-18 03:35:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 03:35:51,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:51,764 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:35:51,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 03:35:51,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:35:51,986 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:51,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1693116247, now seen corresponding path program 1 times [2022-01-18 03:35:51,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:51,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608168036] [2022-01-18 03:35:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:51,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:35:51,999 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:35:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:35:52,026 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:35:52,026 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:35:52,026 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining) [2022-01-18 03:35:52,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-18 03:35:52,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 03:35:52,027 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:35:52,027 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:35:52,027 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-01-18 03:35:52,036 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,037 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,038 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,039 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,039 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,039 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,039 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,039 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,040 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,040 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,040 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,040 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,040 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,040 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,040 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,041 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,042 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,043 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,044 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,044 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,044 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,044 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,045 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,045 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,045 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,045 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,045 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,045 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,045 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,045 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,046 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,047 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,047 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,047 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,047 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,047 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,047 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,047 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,048 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,048 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,048 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,048 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,048 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,048 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,048 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,048 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,048 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,049 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,049 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,049 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,049 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,049 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,049 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,049 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,050 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,050 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:35:52,053 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-01-18 03:35:52,056 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:35:52,057 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, 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 [2022-01-18 03:35:52,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 03:35:52,058 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 87 transitions, 234 flow [2022-01-18 03:35:56,068 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 129094 states, 129087 states have (on average 5.021992919503901) internal successors, (648274), 129093 states have internal predecessors, (648274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 129094 states, 129087 states have (on average 5.021992919503901) internal successors, (648274), 129093 states have internal predecessors, (648274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 03:35:56,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:35:56,279 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] [2022-01-18 03:35:56,279 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:35:56,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:35:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash 239291490, now seen corresponding path program 1 times [2022-01-18 03:35:56,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:35:56,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131728714] [2022-01-18 03:35:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:35:56,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:35:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:35:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:35:56,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:35:56,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131728714] [2022-01-18 03:35:56,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131728714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:35:56,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:35:56,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:35:56,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584803003] [2022-01-18 03:35:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:35:56,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 03:35:56,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:35:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 03:35:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 03:35:56,581 INFO L87 Difference]: Start difference. First operand has 129094 states, 129087 states have (on average 5.021992919503901) internal successors, (648274), 129093 states have internal predecessors, (648274), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:35:58,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:35:58,968 INFO L93 Difference]: Finished difference Result 129094 states and 638943 transitions. [2022-01-18 03:35:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 03:35:58,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 03:35:58,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:36:00,047 INFO L225 Difference]: With dead ends: 129094 [2022-01-18 03:36:00,047 INFO L226 Difference]: Without dead ends: 129094 [2022-01-18 03:36:00,048 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 [2022-01-18 03:36:00,048 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:36:00,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:36:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129094 states. [2022-01-18 03:36:04,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129094 to 129094. [2022-01-18 03:36:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129094 states, 129087 states have (on average 4.949708336238351) internal successors, (638943), 129093 states have internal predecessors, (638943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129094 states to 129094 states and 638943 transitions. [2022-01-18 03:36:06,748 INFO L78 Accepts]: Start accepts. Automaton has 129094 states and 638943 transitions. Word has length 23 [2022-01-18 03:36:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:36:06,748 INFO L470 AbstractCegarLoop]: Abstraction has 129094 states and 638943 transitions. [2022-01-18 03:36:06,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 129094 states and 638943 transitions. [2022-01-18 03:36:06,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 03:36:06,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:36:06,749 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] [2022-01-18 03:36:06,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 03:36:06,749 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:36:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:36:06,749 INFO L85 PathProgramCache]: Analyzing trace with hash 239292451, now seen corresponding path program 1 times [2022-01-18 03:36:06,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:36:06,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003978749] [2022-01-18 03:36:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:36:06,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:36:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:36:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:36:06,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:36:06,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003978749] [2022-01-18 03:36:06,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003978749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:36:06,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:36:06,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:36:06,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190482850] [2022-01-18 03:36:06,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:36:06,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:36:06,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:36:06,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:36:06,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:36:06,774 INFO L87 Difference]: Start difference. First operand 129094 states and 638943 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:08,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:36:08,564 INFO L93 Difference]: Finished difference Result 129091 states and 638940 transitions. [2022-01-18 03:36:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:36:08,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 03:36:08,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:36:09,460 INFO L225 Difference]: With dead ends: 129091 [2022-01-18 03:36:09,460 INFO L226 Difference]: Without dead ends: 129091 [2022-01-18 03:36:09,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:36:09,461 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 13 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:36:09,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 106 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:36:10,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129091 states. [2022-01-18 03:36:14,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129091 to 129091. [2022-01-18 03:36:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129091 states, 129085 states have (on average 4.949761784870434) internal successors, (638940), 129090 states have internal predecessors, (638940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129091 states to 129091 states and 638940 transitions. [2022-01-18 03:36:15,887 INFO L78 Accepts]: Start accepts. Automaton has 129091 states and 638940 transitions. Word has length 23 [2022-01-18 03:36:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:36:15,887 INFO L470 AbstractCegarLoop]: Abstraction has 129091 states and 638940 transitions. [2022-01-18 03:36:15,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 129091 states and 638940 transitions. [2022-01-18 03:36:15,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 03:36:15,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:36:15,888 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] [2022-01-18 03:36:15,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 03:36:15,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:36:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:36:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1483448859, now seen corresponding path program 1 times [2022-01-18 03:36:15,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:36:15,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357083631] [2022-01-18 03:36:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:36:15,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:36:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:36:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:36:15,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:36:15,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357083631] [2022-01-18 03:36:15,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357083631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:36:15,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:36:15,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:36:15,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863020755] [2022-01-18 03:36:15,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:36:15,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:36:15,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:36:15,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:36:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:36:15,933 INFO L87 Difference]: Start difference. First operand 129091 states and 638940 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:36:17,676 INFO L93 Difference]: Finished difference Result 128365 states and 634932 transitions. [2022-01-18 03:36:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:36:17,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-18 03:36:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:36:19,275 INFO L225 Difference]: With dead ends: 128365 [2022-01-18 03:36:19,275 INFO L226 Difference]: Without dead ends: 128365 [2022-01-18 03:36:19,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:36:19,276 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 23 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:36:19,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 99 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:36:19,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128365 states. [2022-01-18 03:36:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128365 to 128365. [2022-01-18 03:36:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128365 states, 128359 states have (on average 4.946532771367805) internal successors, (634932), 128364 states have internal predecessors, (634932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128365 states to 128365 states and 634932 transitions. [2022-01-18 03:36:25,225 INFO L78 Accepts]: Start accepts. Automaton has 128365 states and 634932 transitions. Word has length 33 [2022-01-18 03:36:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:36:25,225 INFO L470 AbstractCegarLoop]: Abstraction has 128365 states and 634932 transitions. [2022-01-18 03:36:25,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 128365 states and 634932 transitions. [2022-01-18 03:36:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 03:36:25,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:36:25,226 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] [2022-01-18 03:36:25,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 03:36:25,226 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:36:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:36:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1737726477, now seen corresponding path program 1 times [2022-01-18 03:36:25,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:36:25,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104700055] [2022-01-18 03:36:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:36:25,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:36:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:36:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:36:25,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:36:25,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104700055] [2022-01-18 03:36:25,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104700055] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:36:25,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345599568] [2022-01-18 03:36:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:36:25,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:36:25,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:36:25,256 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) [2022-01-18 03:36:25,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 03:36:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:36:25,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 03:36:25,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:36:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:36:25,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:36:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:36:25,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345599568] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:36:25,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:36:25,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 03:36:25,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108498703] [2022-01-18 03:36:25,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:36:25,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 03:36:25,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:36:25,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 03:36:25,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 03:36:25,438 INFO L87 Difference]: Start difference. First operand 128365 states and 634932 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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) [2022-01-18 03:36:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:36:27,333 INFO L93 Difference]: Finished difference Result 128263 states and 634677 transitions. [2022-01-18 03:36:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 03:36:27,333 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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 36 [2022-01-18 03:36:27,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:36:28,825 INFO L225 Difference]: With dead ends: 128263 [2022-01-18 03:36:28,825 INFO L226 Difference]: Without dead ends: 128263 [2022-01-18 03:36:28,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 03:36:28,826 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 140 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:36:28,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 351 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:36:29,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128263 states. [2022-01-18 03:36:33,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128263 to 128263. [2022-01-18 03:36:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128263 states, 128259 states have (on average 4.948401281781395) internal successors, (634677), 128262 states have internal predecessors, (634677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128263 states to 128263 states and 634677 transitions. [2022-01-18 03:36:34,740 INFO L78 Accepts]: Start accepts. Automaton has 128263 states and 634677 transitions. Word has length 36 [2022-01-18 03:36:34,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:36:34,740 INFO L470 AbstractCegarLoop]: Abstraction has 128263 states and 634677 transitions. [2022-01-18 03:36:34,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 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) [2022-01-18 03:36:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand 128263 states and 634677 transitions. [2022-01-18 03:36:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 03:36:34,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:36:34,746 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-18 03:36:34,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 03:36:34,969 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,SelfDestructingSolverStorable26 [2022-01-18 03:36:34,969 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:36:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:36:34,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1612090915, now seen corresponding path program 1 times [2022-01-18 03:36:34,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:36:34,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387198406] [2022-01-18 03:36:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:36:34,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:36:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:36:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 03:36:35,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:36:35,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387198406] [2022-01-18 03:36:35,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387198406] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:36:35,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654131440] [2022-01-18 03:36:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:36:35,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:36:35,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:36:35,032 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) [2022-01-18 03:36:35,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 03:36:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:36:35,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 03:36:35,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:36:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 03:36:35,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:36:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 03:36:35,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654131440] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:36:35,411 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:36:35,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 03:36:35,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149609183] [2022-01-18 03:36:35,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:36:35,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:36:35,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:36:35,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:36:35,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:36:35,413 INFO L87 Difference]: Start difference. First operand 128263 states and 634677 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:38,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:36:38,918 INFO L93 Difference]: Finished difference Result 187105 states and 909702 transitions. [2022-01-18 03:36:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:36:38,919 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 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 56 [2022-01-18 03:36:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:36:40,356 INFO L225 Difference]: With dead ends: 187105 [2022-01-18 03:36:40,356 INFO L226 Difference]: Without dead ends: 186754 [2022-01-18 03:36:40,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=637, Invalid=2333, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:36:40,360 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 698 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:36:40,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 1549 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:36:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186754 states. [2022-01-18 03:36:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186754 to 159943. [2022-01-18 03:36:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159943 states, 159939 states have (on average 4.904901243599122) internal successors, (784485), 159942 states have internal predecessors, (784485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159943 states to 159943 states and 784485 transitions. [2022-01-18 03:36:50,640 INFO L78 Accepts]: Start accepts. Automaton has 159943 states and 784485 transitions. Word has length 56 [2022-01-18 03:36:50,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:36:50,640 INFO L470 AbstractCegarLoop]: Abstraction has 159943 states and 784485 transitions. [2022-01-18 03:36:50,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 159943 states and 784485 transitions. [2022-01-18 03:36:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-18 03:36:50,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:36:50,660 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-18 03:36:50,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-18 03:36:50,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 03:36:50,861 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:36:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:36:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash 930514222, now seen corresponding path program 1 times [2022-01-18 03:36:50,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:36:50,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545932155] [2022-01-18 03:36:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:36:50,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:36:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:36:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:36:51,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:36:51,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545932155] [2022-01-18 03:36:51,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545932155] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:36:51,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048450612] [2022-01-18 03:36:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:36:51,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:36:51,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:36:51,011 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) [2022-01-18 03:36:51,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 03:36:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:36:51,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 03:36:51,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:36:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:36:51,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:36:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:36:51,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048450612] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:36:51,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:36:51,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-01-18 03:36:51,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377485967] [2022-01-18 03:36:51,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:36:51,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 03:36:51,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:36:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 03:36:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-01-18 03:36:51,644 INFO L87 Difference]: Start difference. First operand 159943 states and 784485 transitions. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:36:55,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:36:55,056 INFO L93 Difference]: Finished difference Result 208570 states and 1015344 transitions. [2022-01-18 03:36:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 03:36:55,056 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 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 56 [2022-01-18 03:36:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:36:57,565 INFO L225 Difference]: With dead ends: 208570 [2022-01-18 03:36:57,566 INFO L226 Difference]: Without dead ends: 207841 [2022-01-18 03:36:57,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1242, Invalid=5238, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 03:36:57,567 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1924 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:36:57,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1924 Valid, 2010 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:36:58,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207841 states. [2022-01-18 03:37:04,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207841 to 165667. [2022-01-18 03:37:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165667 states, 165665 states have (on average 4.923610901518124) internal successors, (815670), 165666 states have internal predecessors, (815670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165667 states to 165667 states and 815670 transitions. [2022-01-18 03:37:06,271 INFO L78 Accepts]: Start accepts. Automaton has 165667 states and 815670 transitions. Word has length 56 [2022-01-18 03:37:06,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:37:06,271 INFO L470 AbstractCegarLoop]: Abstraction has 165667 states and 815670 transitions. [2022-01-18 03:37:06,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 165667 states and 815670 transitions. [2022-01-18 03:37:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 03:37:06,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:37:06,389 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:37:06,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 03:37:06,596 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,SelfDestructingSolverStorable28 [2022-01-18 03:37:06,596 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:37:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:37:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash -184578877, now seen corresponding path program 1 times [2022-01-18 03:37:06,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:37:06,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833237805] [2022-01-18 03:37:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:37:06,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:37:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:37:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 88 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:37:06,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:37:06,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833237805] [2022-01-18 03:37:06,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833237805] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:37:06,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087781319] [2022-01-18 03:37:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:37:06,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:37:06,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:37:06,717 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) [2022-01-18 03:37:06,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 03:37:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:37:06,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 03:37:06,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:37:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:37:06,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 03:37:06,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087781319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:37:06,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 03:37:06,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2022-01-18 03:37:06,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852839120] [2022-01-18 03:37:06,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:37:06,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 03:37:06,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:37:06,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 03:37:06,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-01-18 03:37:06,957 INFO L87 Difference]: Start difference. First operand 165667 states and 815670 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:37:08,845 INFO L93 Difference]: Finished difference Result 126787 states and 609687 transitions. [2022-01-18 03:37:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 03:37:08,846 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-18 03:37:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:37:10,384 INFO L225 Difference]: With dead ends: 126787 [2022-01-18 03:37:10,385 INFO L226 Difference]: Without dead ends: 122413 [2022-01-18 03:37:10,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2022-01-18 03:37:10,385 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 290 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:37:10,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 1042 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:37:10,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122413 states. [2022-01-18 03:37:14,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122413 to 122413. [2022-01-18 03:37:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122413 states, 122412 states have (on average 4.807910989118714) internal successors, (588546), 122412 states have internal predecessors, (588546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122413 states to 122413 states and 588546 transitions. [2022-01-18 03:37:16,079 INFO L78 Accepts]: Start accepts. Automaton has 122413 states and 588546 transitions. Word has length 75 [2022-01-18 03:37:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:37:16,079 INFO L470 AbstractCegarLoop]: Abstraction has 122413 states and 588546 transitions. [2022-01-18 03:37:16,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 122413 states and 588546 transitions. [2022-01-18 03:37:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-18 03:37:16,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:37:16,211 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:37:16,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 03:37:16,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:37:16,412 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:37:16,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:37:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1215162759, now seen corresponding path program 1 times [2022-01-18 03:37:16,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:37:16,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793769157] [2022-01-18 03:37:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:37:16,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:37:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:37:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 03:37:16,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:37:16,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793769157] [2022-01-18 03:37:16,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793769157] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:37:16,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097752137] [2022-01-18 03:37:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:37:16,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:37:16,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:37:16,519 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) [2022-01-18 03:37:16,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 03:37:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:37:16,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 03:37:16,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:37:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 03:37:16,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:37:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 03:37:16,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097752137] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:37:16,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:37:16,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-01-18 03:37:16,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106966455] [2022-01-18 03:37:16,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:37:16,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 03:37:16,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:37:16,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 03:37:16,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-01-18 03:37:16,941 INFO L87 Difference]: Start difference. First operand 122413 states and 588546 transitions. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:37:19,570 INFO L93 Difference]: Finished difference Result 149953 states and 711342 transitions. [2022-01-18 03:37:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 03:37:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 76 [2022-01-18 03:37:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:37:21,130 INFO L225 Difference]: With dead ends: 149953 [2022-01-18 03:37:21,130 INFO L226 Difference]: Without dead ends: 138046 [2022-01-18 03:37:21,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=801, Invalid=3755, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 03:37:21,132 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1591 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:37:21,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 2068 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:37:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138046 states. [2022-01-18 03:37:25,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138046 to 112045. [2022-01-18 03:37:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112045 states, 112044 states have (on average 4.769652993466853) internal successors, (534411), 112044 states have internal predecessors, (534411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112045 states to 112045 states and 534411 transitions. [2022-01-18 03:37:25,959 INFO L78 Accepts]: Start accepts. Automaton has 112045 states and 534411 transitions. Word has length 76 [2022-01-18 03:37:25,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:37:25,959 INFO L470 AbstractCegarLoop]: Abstraction has 112045 states and 534411 transitions. [2022-01-18 03:37:25,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:25,959 INFO L276 IsEmpty]: Start isEmpty. Operand 112045 states and 534411 transitions. [2022-01-18 03:37:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-18 03:37:26,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:37:26,065 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:37:26,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 03:37:26,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:37:26,289 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:37:26,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:37:26,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1403858248, now seen corresponding path program 1 times [2022-01-18 03:37:26,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:37:26,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325149190] [2022-01-18 03:37:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:37:26,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:37:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:37:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:37:26,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:37:26,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325149190] [2022-01-18 03:37:26,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325149190] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:37:26,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689027799] [2022-01-18 03:37:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:37:26,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:37:26,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:37:26,414 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) [2022-01-18 03:37:27,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 03:37:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:37:27,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 03:37:27,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:37:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:37:27,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:37:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:37:27,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689027799] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:37:27,611 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:37:27,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2022-01-18 03:37:27,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140415851] [2022-01-18 03:37:27,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:37:27,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:37:27,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:37:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:37:27,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:37:27,613 INFO L87 Difference]: Start difference. First operand 112045 states and 534411 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:29,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:37:29,607 INFO L93 Difference]: Finished difference Result 125653 states and 588195 transitions. [2022-01-18 03:37:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:37:29,617 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 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 76 [2022-01-18 03:37:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:37:30,238 INFO L225 Difference]: With dead ends: 125653 [2022-01-18 03:37:30,238 INFO L226 Difference]: Without dead ends: 93568 [2022-01-18 03:37:30,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=490, Invalid=2266, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 03:37:30,239 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 1045 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:37:30,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 1536 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:37:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93568 states. [2022-01-18 03:37:32,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93568 to 77773. [2022-01-18 03:37:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77773 states, 77772 states have (on average 4.569472303656843) internal successors, (355377), 77772 states have internal predecessors, (355377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77773 states to 77773 states and 355377 transitions. [2022-01-18 03:37:33,839 INFO L78 Accepts]: Start accepts. Automaton has 77773 states and 355377 transitions. Word has length 76 [2022-01-18 03:37:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:37:33,839 INFO L470 AbstractCegarLoop]: Abstraction has 77773 states and 355377 transitions. [2022-01-18 03:37:33,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 77773 states and 355377 transitions. [2022-01-18 03:37:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-18 03:37:33,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:37:33,916 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:37:33,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 03:37:34,118 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,SelfDestructingSolverStorable31 [2022-01-18 03:37:34,119 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:37:34,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:37:34,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1418172343, now seen corresponding path program 1 times [2022-01-18 03:37:34,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:37:34,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199940632] [2022-01-18 03:37:34,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:37:34,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:37:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:37:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-18 03:37:34,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:37:34,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199940632] [2022-01-18 03:37:34,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199940632] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:37:34,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900533683] [2022-01-18 03:37:34,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:37:34,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:37:34,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:37:34,171 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) [2022-01-18 03:37:34,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 03:37:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:37:34,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 03:37:34,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:37:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-18 03:37:34,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:37:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-18 03:37:34,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900533683] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:37:34,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:37:34,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-01-18 03:37:34,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954797889] [2022-01-18 03:37:34,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:37:34,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 03:37:34,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:37:34,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 03:37:34,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 03:37:34,694 INFO L87 Difference]: Start difference. First operand 77773 states and 355377 transitions. Second operand has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:37:35,428 INFO L93 Difference]: Finished difference Result 69997 states and 316497 transitions. [2022-01-18 03:37:35,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 03:37:35,428 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 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 76 [2022-01-18 03:37:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:37:35,428 INFO L225 Difference]: With dead ends: 69997 [2022-01-18 03:37:35,428 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 03:37:35,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2022-01-18 03:37:35,429 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 580 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:37:35,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 802 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:37:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 03:37:35,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 03:37:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:35,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 03:37:35,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-01-18 03:37:35,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:37:35,430 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 03:37:35,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:37:35,431 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 03:37:35,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 03:37:35,431 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-18 03:37:35,431 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-01-18 03:37:35,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-01-18 03:37:35,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:37:35,635 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:37:35,636 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 5 thread instances [2022-01-18 03:37:35,636 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:37:35,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:37:35 BasicIcfg [2022-01-18 03:37:35,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:37:35,641 INFO L158 Benchmark]: Toolchain (without parser) took 124213.29ms. Allocated memory was 377.5MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 318.4MB in the beginning and 8.0GB in the end (delta: -7.6GB). Peak memory consumption was 7.9GB. Max. memory is 16.0GB. [2022-01-18 03:37:35,641 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 377.5MB. Free memory is still 335.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:37:35,641 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.88ms. Allocated memory was 377.5MB in the beginning and 532.7MB in the end (delta: 155.2MB). Free memory was 318.2MB in the beginning and 494.8MB in the end (delta: -176.6MB). Peak memory consumption was 9.1MB. Max. memory is 16.0GB. [2022-01-18 03:37:35,641 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.84ms. Allocated memory is still 532.7MB. Free memory was 494.8MB in the beginning and 492.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:37:35,641 INFO L158 Benchmark]: Boogie Preprocessor took 37.77ms. Allocated memory is still 532.7MB. Free memory was 492.8MB in the beginning and 491.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:37:35,642 INFO L158 Benchmark]: RCFGBuilder took 303.35ms. Allocated memory is still 532.7MB. Free memory was 490.7MB in the beginning and 478.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 03:37:35,642 INFO L158 Benchmark]: TraceAbstraction took 123389.57ms. Allocated memory was 532.7MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 477.0MB in the beginning and 8.0GB in the end (delta: -7.5GB). Peak memory consumption was 7.9GB. Max. memory is 16.0GB. [2022-01-18 03:37:35,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 377.5MB. Free memory is still 335.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 428.88ms. Allocated memory was 377.5MB in the beginning and 532.7MB in the end (delta: 155.2MB). Free memory was 318.2MB in the beginning and 494.8MB in the end (delta: -176.6MB). Peak memory consumption was 9.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.84ms. Allocated memory is still 532.7MB. Free memory was 494.8MB in the beginning and 492.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.77ms. Allocated memory is still 532.7MB. Free memory was 492.8MB in the beginning and 491.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 303.35ms. Allocated memory is still 532.7MB. Free memory was 490.7MB in the beginning and 478.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 123389.57ms. Allocated memory was 532.7MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 477.0MB in the beginning and 8.0GB in the end (delta: -7.5GB). Peak memory consumption was 7.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 727]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 62 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 111 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 106 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 68 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 158 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 405 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 234 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 172 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=610occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 279 SizeOfPredicates, 2 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 1/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 74 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 822 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 822 mSDsluCounter, 1228 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 945 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 271 IncrementalHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 285 mSDtfsCounter, 271 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 213 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4063occurred in iteration=4, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 1161 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 582 SizeOfPredicates, 10 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 1/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 80 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 14.9s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3320 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3320 mSDsluCounter, 3545 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2920 mSDsCounter, 154 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 766 IncrementalHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 154 mSolverCounterUnsat, 628 mSDtfsCounter, 766 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 545 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26203occurred in iteration=6, InterpolantAutomatonStates: 136, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 20853 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 552 NumberOfCodeBlocks, 552 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 676 ConstructedInterpolants, 0 QuantifiedInterpolants, 1688 SizeOfPredicates, 26 NumberOfNonLiveVariables, 496 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 19/301 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 5 thread instances CFG has 7 procedures, 86 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 103.6s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.7s, AutomataDifference: 35.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6304 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6304 mSDsluCounter, 9621 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8344 mSDsCounter, 234 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1842 IncrementalHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 234 mSolverCounterUnsat, 1281 mSDtfsCounter, 1842 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1094 GetRequests, 777 SyntacticMatches, 3 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4915 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165667occurred in iteration=6, InterpolantAutomatonStates: 254, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 58.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 110781 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 981 NumberOfCodeBlocks, 981 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1334 ConstructedInterpolants, 0 QuantifiedInterpolants, 3678 SizeOfPredicates, 62 NumberOfNonLiveVariables, 1076 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 23 InterpolantComputations, 4 PerfectInterpolantSequences, 502/1397 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 03:37:35,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...