/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_safe-7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-02 05:24:42,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-02 05:24:42,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-02 05:24:42,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-02 05:24:42,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-02 05:24:42,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-02 05:24:42,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-02 05:24:42,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-02 05:24:42,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-02 05:24:42,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-02 05:24:42,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-02 05:24:42,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-02 05:24:42,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-02 05:24:42,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-02 05:24:42,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-02 05:24:42,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-02 05:24:42,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-02 05:24:42,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-02 05:24:42,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-02 05:24:42,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-02 05:24:42,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-02 05:24:42,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-02 05:24:42,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-02 05:24:42,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-02 05:24:42,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-02 05:24:42,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-02 05:24:42,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-02 05:24:42,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-02 05:24:42,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-02 05:24:42,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-02 05:24:42,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-02 05:24:42,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-02 05:24:42,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-02 05:24:42,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-02 05:24:42,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-02 05:24:42,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-02 05:24:42,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-02 05:24:42,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-02 05:24:42,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-02 05:24:42,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-02 05:24:42,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-02 05:24:42,145 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-MCRwithoutDepranks-Lazy.epf [2022-03-02 05:24:42,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-02 05:24:42,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-02 05:24:42,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-02 05:24:42,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-02 05:24:42,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-02 05:24:42,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-02 05:24:42,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-02 05:24:42,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-02 05:24:42,161 INFO L138 SettingsManager]: * Use SBE=true [2022-03-02 05:24:42,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-02 05:24:42,161 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-02 05:24:42,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-02 05:24:42,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-02 05:24:42,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-02 05:24:42,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-02 05:24:42,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-02 05:24:42,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-02 05:24:42,162 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-02 05:24:42,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-02 05:24:42,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-02 05:24:42,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-02 05:24:42,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-02 05:24:42,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-02 05:24:42,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-02 05:24:42,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-02 05:24:42,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-02 05:24:42,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-02 05:24:42,179 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-02 05:24:42,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-02 05:24:42,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-02 05:24:42,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-02 05:24:42,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-02 05:24:42,180 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-02 05:24:42,180 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-02 05:24:42,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-02 05:24:42,180 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-02 05:24:42,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-02 05:24:42,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-02 05:24:42,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-02 05:24:42,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-02 05:24:42,389 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-02 05:24:42,390 INFO L275 PluginConnector]: CDTParser initialized [2022-03-02 05:24:42,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-7.i [2022-03-02 05:24:42,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348fbeaa0/e1bb087152654611b0a901dd1ca4bbfa/FLAGb9d923886 [2022-03-02 05:24:42,833 INFO L306 CDTParser]: Found 1 translation units. [2022-03-02 05:24:42,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-7.i [2022-03-02 05:24:42,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348fbeaa0/e1bb087152654611b0a901dd1ca4bbfa/FLAGb9d923886 [2022-03-02 05:24:42,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348fbeaa0/e1bb087152654611b0a901dd1ca4bbfa [2022-03-02 05:24:42,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-02 05:24:42,857 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-02 05:24:42,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-02 05:24:42,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-02 05:24:42,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-02 05:24:42,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.03 05:24:42" (1/1) ... [2022-03-02 05:24:42,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@367641bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:42, skipping insertion in model container [2022-03-02 05:24:42,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.03 05:24:42" (1/1) ... [2022-03-02 05:24:42,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-02 05:24:42,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-02 05:24:43,139 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/fib_safe-7.i[30813,30826] [2022-03-02 05:24:43,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-02 05:24:43,149 INFO L203 MainTranslator]: Completed pre-run [2022-03-02 05:24:43,184 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/fib_safe-7.i[30813,30826] [2022-03-02 05:24:43,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-02 05:24:43,212 INFO L208 MainTranslator]: Completed translation [2022-03-02 05:24:43,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43 WrapperNode [2022-03-02 05:24:43,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-02 05:24:43,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-02 05:24:43,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-02 05:24:43,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-02 05:24:43,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (1/1) ... [2022-03-02 05:24:43,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (1/1) ... [2022-03-02 05:24:43,259 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-03-02 05:24:43,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-02 05:24:43,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-02 05:24:43,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-02 05:24:43,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-02 05:24:43,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (1/1) ... [2022-03-02 05:24:43,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (1/1) ... [2022-03-02 05:24:43,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (1/1) ... [2022-03-02 05:24:43,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (1/1) ... [2022-03-02 05:24:43,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (1/1) ... [2022-03-02 05:24:43,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (1/1) ... [2022-03-02 05:24:43,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (1/1) ... [2022-03-02 05:24:43,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-02 05:24:43,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-02 05:24:43,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-02 05:24:43,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-02 05:24:43,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (1/1) ... [2022-03-02 05:24:43,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-02 05:24:43,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 05:24:43,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-02 05:24:43,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-02 05:24:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-03-02 05:24:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-03-02 05:24:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-03-02 05:24:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-03-02 05:24:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-02 05:24:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-02 05:24:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-02 05:24:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-02 05:24:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-02 05:24:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-02 05:24:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-02 05:24:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-02 05:24:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-02 05:24:43,344 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-02 05:24:43,437 INFO L234 CfgBuilder]: Building ICFG [2022-03-02 05:24:43,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-02 05:24:43,559 INFO L275 CfgBuilder]: Performing block encoding [2022-03-02 05:24:43,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-02 05:24:43,564 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-02 05:24:43,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.03 05:24:43 BoogieIcfgContainer [2022-03-02 05:24:43,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-02 05:24:43,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-02 05:24:43,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-02 05:24:43,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-02 05:24:43,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.03 05:24:42" (1/3) ... [2022-03-02 05:24:43,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282c917b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.03 05:24:43, skipping insertion in model container [2022-03-02 05:24:43,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.03 05:24:43" (2/3) ... [2022-03-02 05:24:43,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282c917b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.03 05:24:43, skipping insertion in model container [2022-03-02 05:24:43,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.03 05:24:43" (3/3) ... [2022-03-02 05:24:43,571 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_safe-7.i [2022-03-02 05:24:43,574 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-02 05:24:43,574 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-02 05:24:43,574 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-02 05:24:43,574 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-02 05:24:43,608 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,609 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,609 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,609 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,609 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,609 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,609 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,609 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,610 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,610 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,610 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,610 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,611 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,611 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,611 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,611 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,611 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,611 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,612 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,612 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,612 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,612 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,612 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,612 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,612 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,612 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,613 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,613 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,613 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,613 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,614 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,614 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,614 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,614 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,614 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,614 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,616 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,616 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,617 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,617 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,617 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,618 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,618 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,619 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,619 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,619 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-02 05:24:43,619 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-02 05:24:43,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-02 05:24:43,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 05:24:43,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-02 05:24:43,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-03-02 05:24:43,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-02 05:24:43,676 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=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-02 05:24:43,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-02 05:24:43,737 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 91 transitions and produced 92 states. [2022-03-02 05:24:43,739 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 05:24:43,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 05:24:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1927097680, now seen corresponding path program 1 times [2022-03-02 05:24:43,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 05:24:43,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987326451] [2022-03-02 05:24:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 05:24:43,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 05:24:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 05:24:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:43,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 05:24:43,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987326451] [2022-03-02 05:24:43,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987326451] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-02 05:24:43,924 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-02 05:24:43,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-02 05:24:43,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284557018] [2022-03-02 05:24:43,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-02 05:24:43,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-02 05:24:43,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 05:24:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-02 05:24:43,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-02 05:24:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:43,952 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 05:24:43,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 05:24:43,954 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:44,006 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 91 transitions and produced 92 states. [2022-03-02 05:24:44,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:44,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-02 05:24:44,007 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 05:24:44,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 05:24:44,010 INFO L85 PathProgramCache]: Analyzing trace with hash 560415153, now seen corresponding path program 1 times [2022-03-02 05:24:44,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 05:24:44,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050595983] [2022-03-02 05:24:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 05:24:44,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 05:24:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 05:24:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:44,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 05:24:44,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050595983] [2022-03-02 05:24:44,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050595983] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-02 05:24:44,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-02 05:24:44,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-02 05:24:44,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363029109] [2022-03-02 05:24:44,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-02 05:24:44,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-02 05:24:44,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 05:24:44,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-02 05:24:44,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-02 05:24:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:44,132 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 05:24:44,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 05:24:44,132 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:44,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:44,166 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 114 transitions and produced 115 states. [2022-03-02 05:24:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:44,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 05:24:44,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-02 05:24:44,168 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 05:24:44,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 05:24:44,168 INFO L85 PathProgramCache]: Analyzing trace with hash -951035470, now seen corresponding path program 1 times [2022-03-02 05:24:44,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 05:24:44,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155648313] [2022-03-02 05:24:44,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 05:24:44,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 05:24:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 05:24:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:44,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 05:24:44,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155648313] [2022-03-02 05:24:44,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155648313] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 05:24:44,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498702890] [2022-03-02 05:24:44,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 05:24:44,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 05:24:44,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 05:24:44,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 05:24:44,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-02 05:24:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 05:24:44,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-02 05:24:44,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 05:24:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:44,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 05:24:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:44,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498702890] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 05:24:44,618 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 05:24:44,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-02 05:24:44,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155220275] [2022-03-02 05:24:44,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 05:24:44,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-02 05:24:44,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 05:24:44,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-02 05:24:44,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-02 05:24:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:44,620 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 05:24:44,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 05:24:44,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:44,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 05:24:44,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:44,883 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 160 transitions and produced 159 states. [2022-03-02 05:24:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 05:24:44,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-02 05:24:44,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-02 05:24:45,103 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,SelfDestructingSolverStorable2 [2022-03-02 05:24:45,104 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 05:24:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 05:24:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1666707666, now seen corresponding path program 2 times [2022-03-02 05:24:45,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 05:24:45,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247808153] [2022-03-02 05:24:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 05:24:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 05:24:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 05:24:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:45,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 05:24:45,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247808153] [2022-03-02 05:24:45,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247808153] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 05:24:45,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341226900] [2022-03-02 05:24:45,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-02 05:24:45,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 05:24:45,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 05:24:45,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 05:24:45,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-02 05:24:45,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-02 05:24:45,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 05:24:45,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-02 05:24:45,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 05:24:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:45,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 05:24:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:45,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341226900] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 05:24:45,581 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 05:24:45,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-02 05:24:45,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828358455] [2022-03-02 05:24:45,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 05:24:45,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-02 05:24:45,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 05:24:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-02 05:24:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-02 05:24:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:45,584 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 05:24:45,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2022-03-02 05:24:45,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:45,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 05:24:45,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-02 05:24:45,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:45,901 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 252 transitions and produced 244 states. [2022-03-02 05:24:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 05:24:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-02 05:24:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-02 05:24:45,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-02 05:24:46,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 05:24:46,116 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 05:24:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 05:24:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1283180782, now seen corresponding path program 3 times [2022-03-02 05:24:46,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 05:24:46,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473426353] [2022-03-02 05:24:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 05:24:46,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 05:24:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 05:24:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:46,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 05:24:46,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473426353] [2022-03-02 05:24:46,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473426353] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 05:24:46,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152635966] [2022-03-02 05:24:46,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-02 05:24:46,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 05:24:46,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 05:24:46,332 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 05:24:46,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-02 05:24:46,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-02 05:24:46,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 05:24:46,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-02 05:24:46,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 05:24:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:46,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 05:24:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:46,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152635966] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 05:24:46,859 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 05:24:46,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-03-02 05:24:46,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966585603] [2022-03-02 05:24:46,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 05:24:46,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-02 05:24:46,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 05:24:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-02 05:24:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-03-02 05:24:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:46,861 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 05:24:46,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 05:24:46,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:46,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 05:24:46,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-02 05:24:46,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-03-02 05:24:46,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:47,567 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 436 transitions and produced 413 states. [2022-03-02 05:24:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 05:24:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 05:24:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-02 05:24:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-02 05:24:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-02 05:24:47,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-02 05:24:47,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 05:24:47,769 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 05:24:47,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 05:24:47,770 INFO L85 PathProgramCache]: Analyzing trace with hash 835265426, now seen corresponding path program 4 times [2022-03-02 05:24:47,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 05:24:47,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110380787] [2022-03-02 05:24:47,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 05:24:47,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 05:24:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 05:24:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:48,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 05:24:48,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110380787] [2022-03-02 05:24:48,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110380787] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 05:24:48,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162031706] [2022-03-02 05:24:48,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-02 05:24:48,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 05:24:48,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 05:24:48,174 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 05:24:48,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-02 05:24:48,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-02 05:24:48,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 05:24:48,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-02 05:24:48,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 05:24:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 572 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 05:24:50,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-03-02 05:39:17,566 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-02 05:39:17,568 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-02 05:39:17,568 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-02 05:39:18,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-02 05:39:18,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-03-02 05:39:18,783 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-03-02 05:39:18,858 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 137 [2022-03-02 05:39:18,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-02 05:39:18,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-02 05:39:18,861 WARN L594 AbstractCegarLoop]: Verification canceled: while PartialOrderCegarLoop was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2022-03-02 05:39:18,862 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-02 05:39:18,862 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-02 05:39:18,866 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-03-02 05:39:18,867 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-02 05:39:18,868 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-02 05:39:18,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.03 05:39:18 BasicIcfg [2022-03-02 05:39:18,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-02 05:39:18,871 INFO L158 Benchmark]: Toolchain (without parser) took 876014.85ms. Allocated memory was 217.1MB in the beginning and 448.8MB in the end (delta: 231.7MB). Free memory was 163.0MB in the beginning and 336.7MB in the end (delta: -173.7MB). Peak memory consumption was 59.5MB. Max. memory is 8.0GB. [2022-03-02 05:39:18,872 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 217.1MB. Free memory is still 180.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-02 05:39:18,872 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.96ms. Allocated memory was 217.1MB in the beginning and 296.7MB in the end (delta: 79.7MB). Free memory was 162.8MB in the beginning and 263.8MB in the end (delta: -101.0MB). Peak memory consumption was 5.0MB. Max. memory is 8.0GB. [2022-03-02 05:39:18,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.99ms. Allocated memory is still 296.7MB. Free memory was 263.3MB in the beginning and 261.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-02 05:39:18,872 INFO L158 Benchmark]: Boogie Preprocessor took 29.65ms. Allocated memory is still 296.7MB. Free memory was 261.7MB in the beginning and 260.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-02 05:39:18,873 INFO L158 Benchmark]: RCFGBuilder took 276.02ms. Allocated memory is still 296.7MB. Free memory was 260.1MB in the beginning and 246.0MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-02 05:39:18,873 INFO L158 Benchmark]: TraceAbstraction took 875304.13ms. Allocated memory was 296.7MB in the beginning and 448.8MB in the end (delta: 152.0MB). Free memory was 245.5MB in the beginning and 336.7MB in the end (delta: -91.2MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. [2022-03-02 05:39:18,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 217.1MB. Free memory is still 180.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 348.96ms. Allocated memory was 217.1MB in the beginning and 296.7MB in the end (delta: 79.7MB). Free memory was 162.8MB in the beginning and 263.8MB in the end (delta: -101.0MB). Peak memory consumption was 5.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.99ms. Allocated memory is still 296.7MB. Free memory was 263.3MB in the beginning and 261.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.65ms. Allocated memory is still 296.7MB. Free memory was 261.7MB in the beginning and 260.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 276.02ms. Allocated memory is still 296.7MB. Free memory was 260.1MB in the beginning and 246.0MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 875304.13ms. Allocated memory was 296.7MB in the beginning and 448.8MB in the end (delta: 152.0MB). Free memory was 245.5MB in the beginning and 336.7MB in the end (delta: -91.2MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 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 - TimeoutResultAtElement [Line: 726]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PartialOrderCegarLoop was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 159 with TraceHistMax 15,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 875.2s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 1.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 803 ConstructedInterpolants, 0 QuantifiedInterpolants, 1285 SizeOfPredicates, 22 NumberOfNonLiveVariables, 552 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 0/537 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown