/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-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 12:19:17,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 12:19:17,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 12:19:18,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-16 12:19:18,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-16 12:19:18,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-16 12:19:18,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-16 12:19:18,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-16 12:19:18,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-16 12:19:18,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-16 12:19:18,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-16 12:19:18,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-16 12:19:18,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 12:19:18,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 12:19:18,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 12:19:18,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 12:19:18,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 12:19:18,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 12:19:18,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 12:19:18,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 12:19:18,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 12:19:18,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 12:19:18,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 12:19:18,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 12:19:18,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-16 12:19:18,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-16 12:19:18,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-16 12:19:18,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-16 12:19:18,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-16 12:19:18,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-16 12:19:18,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-16 12:19:18,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-16 12:19:18,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-16 12:19:18,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-16 12:19:18,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-16 12:19:18,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-16 12:19:18,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-16 12:19:18,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-16 12:19:18,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 12:19:18,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 12:19:18,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 12:19:18,051 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 [2022-03-16 12:19:18,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 12:19:18,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 12:19:18,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 12:19:18,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 12:19:18,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 12:19:18,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 12:19:18,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 12:19:18,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 12:19:18,082 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 12:19:18,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 12:19:18,083 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 12:19:18,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 12:19:18,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 12:19:18,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 12:19:18,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 12:19:18,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 12:19:18,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 12:19:18,084 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 12:19:18,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 12:19:18,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 12:19:18,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 12:19:18,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 12:19:18,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 12:19:18,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 12:19:18,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 12:19:18,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 12:19:18,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 12:19:18,085 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 12:19:18,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 12:19:18,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 12:19:18,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 12:19:18,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 12:19:18,086 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 12:19:18,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 12:19:18,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 12:19:18,087 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-16 12:19:18,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 12:19:18,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 12:19:18,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 12:19:18,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 12:19:18,311 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-16 12:19:18,311 INFO L275 PluginConnector]: CDTParser initialized [2022-03-16 12:19:18,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-6.i [2022-03-16 12:19:18,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd2ff1721/287ce430cc724898bc5316f3bdfab51d/FLAG9530927d3 [2022-03-16 12:19:18,791 INFO L306 CDTParser]: Found 1 translation units. [2022-03-16 12:19:18,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i [2022-03-16 12:19:18,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd2ff1721/287ce430cc724898bc5316f3bdfab51d/FLAG9530927d3 [2022-03-16 12:19:19,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd2ff1721/287ce430cc724898bc5316f3bdfab51d [2022-03-16 12:19:19,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 12:19:19,147 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-16 12:19:19,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-16 12:19:19,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-16 12:19:19,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-16 12:19:19,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5b3c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19, skipping insertion in model container [2022-03-16 12:19:19,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-16 12:19:19,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-16 12:19:19,467 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-6.i[30813,30826] [2022-03-16 12:19:19,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-16 12:19:19,476 INFO L203 MainTranslator]: Completed pre-run [2022-03-16 12:19:19,514 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-6.i[30813,30826] [2022-03-16 12:19:19,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-16 12:19:19,543 INFO L208 MainTranslator]: Completed translation [2022-03-16 12:19:19,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19 WrapperNode [2022-03-16 12:19:19,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-16 12:19:19,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 12:19:19,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 12:19:19,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 12:19:19,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,579 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-03-16 12:19:19,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 12:19:19,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 12:19:19,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 12:19:19,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 12:19:19,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 12:19:19,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 12:19:19,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 12:19:19,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 12:19:19,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (1/1) ... [2022-03-16 12:19:19,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 12:19:19,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 12:19:19,626 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) [2022-03-16 12:19:19,629 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 [2022-03-16 12:19:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-03-16 12:19:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-03-16 12:19:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-03-16 12:19:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-03-16 12:19:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-16 12:19:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-16 12:19:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-16 12:19:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-16 12:19:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-16 12:19:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-16 12:19:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-16 12:19:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 12:19:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 12:19:19,656 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-16 12:19:19,726 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 12:19:19,727 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 12:19:19,895 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 12:19:19,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 12:19:19,918 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-16 12:19:19,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 12:19:19 BoogieIcfgContainer [2022-03-16 12:19:19,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 12:19:19,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 12:19:19,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 12:19:19,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 12:19:19,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 12:19:19" (1/3) ... [2022-03-16 12:19:19,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1ba36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 12:19:19, skipping insertion in model container [2022-03-16 12:19:19,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 12:19:19" (2/3) ... [2022-03-16 12:19:19,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1ba36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 12:19:19, skipping insertion in model container [2022-03-16 12:19:19,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 12:19:19" (3/3) ... [2022-03-16 12:19:19,937 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2022-03-16 12:19:19,941 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 12:19:19,941 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 12:19:19,941 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 12:19:19,941 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 12:19:19,981 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,982 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,982 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,982 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,982 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,982 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,983 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,983 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,983 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,984 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,984 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,984 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,985 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,985 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,985 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,985 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,985 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,985 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,986 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,986 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,986 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,986 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,986 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,986 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,986 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,987 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,987 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,987 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,987 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,987 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,988 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,988 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,988 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,988 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,988 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,988 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,991 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,991 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,991 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,991 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,991 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,993 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,993 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,993 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,993 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,994 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 12:19:19,994 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-16 12:19:20,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 12:19:20,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 12:19:20,037 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) [2022-03-16 12:19:20,054 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 [2022-03-16 12:19:20,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 12:19:20,087 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 [2022-03-16 12:19:20,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 12:19:20,380 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 91 transitions and produced 92 states. [2022-03-16 12:19:20,383 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 12:19:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 12:19:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1927097680, now seen corresponding path program 1 times [2022-03-16 12:19:20,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 12:19:20,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133794654] [2022-03-16 12:19:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 12:19:20,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 12:19:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 12:19:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:20,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 12:19:20,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133794654] [2022-03-16 12:19:20,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133794654] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 12:19:20,627 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 12:19:20,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-16 12:19:20,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217202904] [2022-03-16 12:19:20,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 12:19:20,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-16 12:19:20,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 12:19:20,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-16 12:19:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-16 12:19:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:20,661 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 12:19:20,663 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) [2022-03-16 12:19:20,663 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:20,810 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 91 transitions and produced 92 states. [2022-03-16 12:19:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:20,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 12:19:20,812 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 12:19:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 12:19:20,815 INFO L85 PathProgramCache]: Analyzing trace with hash 560415153, now seen corresponding path program 1 times [2022-03-16 12:19:20,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 12:19:20,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749239105] [2022-03-16 12:19:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 12:19:20,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 12:19:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 12:19:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:21,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 12:19:21,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749239105] [2022-03-16 12:19:21,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749239105] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 12:19:21,020 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 12:19:21,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 12:19:21,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854947277] [2022-03-16 12:19:21,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 12:19:21,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 12:19:21,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 12:19:21,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 12:19:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 12:19:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:21,036 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 12:19:21,036 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) [2022-03-16 12:19:21,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:21,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:21,276 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 114 transitions and produced 115 states. [2022-03-16 12:19:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 12:19:21,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-16 12:19:21,278 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 12:19:21,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 12:19:21,279 INFO L85 PathProgramCache]: Analyzing trace with hash -951035470, now seen corresponding path program 1 times [2022-03-16 12:19:21,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 12:19:21,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774781553] [2022-03-16 12:19:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 12:19:21,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 12:19:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 12:19:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:21,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 12:19:21,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774781553] [2022-03-16 12:19:21,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774781553] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 12:19:21,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426003605] [2022-03-16 12:19:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 12:19:21,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 12:19:21,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 12:19:21,409 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) [2022-03-16 12:19:21,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-16 12:19:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 12:19:21,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-16 12:19:21,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 12:19:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:21,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 12:19:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:21,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426003605] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 12:19:21,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 12:19:21,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-16 12:19:21,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695672242] [2022-03-16 12:19:21,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 12:19:21,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-16 12:19:21,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 12:19:21,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-16 12:19:21,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-16 12:19:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:21,934 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 12:19:21,934 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) [2022-03-16 12:19:21,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:21,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 12:19:21,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:22,643 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 160 transitions and produced 161 states. [2022-03-16 12:19:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 12:19:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 12:19:22,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-16 12:19:22,879 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 [2022-03-16 12:19:22,880 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 12:19:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 12:19:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1666707666, now seen corresponding path program 2 times [2022-03-16 12:19:22,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 12:19:22,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408542290] [2022-03-16 12:19:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 12:19:22,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 12:19:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 12:19:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:23,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 12:19:23,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408542290] [2022-03-16 12:19:23,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408542290] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 12:19:23,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381994351] [2022-03-16 12:19:23,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 12:19:23,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 12:19:23,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 12:19:23,037 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) [2022-03-16 12:19:23,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-16 12:19:23,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-16 12:19:23,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 12:19:23,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-16 12:19:23,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 12:19:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:23,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 12:19:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:23,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381994351] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 12:19:23,425 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 12:19:23,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-16 12:19:23,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438942151] [2022-03-16 12:19:23,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 12:19:23,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-16 12:19:23,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 12:19:23,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-16 12:19:23,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-16 12:19:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:23,428 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 12:19:23,428 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) [2022-03-16 12:19:23,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:23,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 12:19:23,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-16 12:19:23,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:23,910 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 252 transitions and produced 245 states. [2022-03-16 12:19:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 12:19:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 12:19:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-16 12:19:23,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-16 12:19:24,135 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 [2022-03-16 12:19:24,136 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 12:19:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 12:19:24,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1283180782, now seen corresponding path program 3 times [2022-03-16 12:19:24,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 12:19:24,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454749351] [2022-03-16 12:19:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 12:19:24,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 12:19:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 12:19:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:24,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 12:19:24,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454749351] [2022-03-16 12:19:24,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454749351] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 12:19:24,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533930312] [2022-03-16 12:19:24,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-16 12:19:24,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 12:19:24,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 12:19:24,378 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) [2022-03-16 12:19:24,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-16 12:19:24,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-16 12:19:24,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 12:19:24,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-16 12:19:24,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 12:19:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:24,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 12:19:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:24,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533930312] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 12:19:24,985 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 12:19:24,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2022-03-16 12:19:24,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779796080] [2022-03-16 12:19:24,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 12:19:24,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-16 12:19:24,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 12:19:24,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-16 12:19:24,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2022-03-16 12:19:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:24,988 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 12:19:24,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 12:19:24,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:24,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 12:19:24,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-16 12:19:24,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-03-16 12:19:24,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:25,713 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 413 transitions and produced 393 states. [2022-03-16 12:19:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:19:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 12:19:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-16 12:19:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-16 12:19:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-16 12:19:25,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-16 12:19:25,928 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 [2022-03-16 12:19:25,928 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 12:19:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 12:19:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2049692625, now seen corresponding path program 4 times [2022-03-16 12:19:25,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 12:19:25,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622867041] [2022-03-16 12:19:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 12:19:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 12:19:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 12:19:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:27,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 12:19:27,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622867041] [2022-03-16 12:19:27,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622867041] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 12:19:27,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991679959] [2022-03-16 12:19:27,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-16 12:19:27,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 12:19:27,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 12:19:27,474 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) [2022-03-16 12:19:27,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-16 12:19:27,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-16 12:19:27,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 12:19:27,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-16 12:19:27,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 12:19:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 486 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:19:30,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 12:27:42,978 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~i~0_8 Int)) (or (forall ((v_~j~0_8 Int)) (or (and (forall ((v_~cur~0_28 Int) (aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse0 (* 2 v_~cur~0_26))) (or (< aux_div_v_~cur~0_22_51 (+ .cse0 c_~prev~0 v_~cur~0_28 1 c_~cur~0)) (>= aux_mod_v_~cur~0_22_51 2) (< (+ aux_mod_v_~next~0_20_56 (* 2 aux_mod_v_~cur~0_22_51) 10 v_~j~0_8) (+ .cse0 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) c_~prev~0 (* 2 aux_div_v_~next~0_20_56) v_~cur~0_28 c_~cur~0)) (< v_~cur~0_28 (+ (* 2 c_~cur~0) c_~prev~0)) (>= aux_mod_v_~next~0_20_56 2) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 v_~j~0_8) (* aux_mod_v_~next~0_20_56 2))) (> 0 aux_mod_v_~cur~0_22_51) (< v_~prev~0_24 (+ c_~prev~0 v_~cur~0_28 v_~cur~0_26 c_~cur~0)) (< v_~cur~0_26 (+ c_~prev~0 (* 2 v_~cur~0_28) c_~cur~0)) (> 0 aux_mod_v_~next~0_20_56)))) (forall ((v_~cur~0_28 Int) (aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse1 (* 2 v_~cur~0_26))) (or (< aux_div_v_~cur~0_22_51 (+ .cse1 c_~prev~0 v_~cur~0_28 1 c_~cur~0)) (>= aux_mod_v_~cur~0_22_51 2) (< v_~cur~0_28 (+ (* 2 c_~cur~0) c_~prev~0)) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~cur~0_22_51) (< (+ aux_mod_v_~next~0_20_56 (* 2 aux_mod_v_~cur~0_22_51) 10 v_~i~0_8) (+ .cse1 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) c_~prev~0 (* 2 aux_div_v_~next~0_20_56) v_~cur~0_28 c_~cur~0)) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ (* 2 v_~i~0_8) 21 aux_mod_v_~cur~0_22_51 (* aux_mod_v_~next~0_20_56 2))) (< v_~prev~0_24 (+ c_~prev~0 v_~cur~0_28 v_~cur~0_26 c_~cur~0)) (< v_~cur~0_26 (+ c_~prev~0 (* 2 v_~cur~0_28) c_~cur~0)) (> 0 aux_mod_v_~next~0_20_56))))) (not (<= v_~j~0_8 1)))) (not (<= v_~i~0_8 1)))) is different from false [2022-03-16 12:28:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 649 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 12:28:36,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991679959] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 12:28:36,098 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 12:28:36,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 139 [2022-03-16 12:28:36,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608568577] [2022-03-16 12:28:36,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 12:28:36,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-03-16 12:28:36,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 12:28:36,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-03-16 12:28:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1221, Invalid=17537, Unknown=152, NotChecked=272, Total=19182 [2022-03-16 12:28:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:28:36,105 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 12:28:36,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 3.050359712230216) internal successors, (424), 139 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 12:28:36,106 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:28:36,106 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 12:28:36,106 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-03-16 12:28:36,106 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-03-16 12:28:36,106 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2022-03-16 12:28:36,106 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 12:29:14,347 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (* (- 1) c_~j~0)) (.cse2 (* 144 c_~next~0)) (.cse0 (+ c_~prev~0 c_~next~0)) (.cse1 (* (- 1) c_~i~0)) (.cse7 (+ 2 c_~prev~0 c_~next~0))) (and (= (+ (- 1) c_~i~0) 0) (<= c_~i~0 .cse0) (<= (div (+ c_~prev~0 .cse1) (- 2)) c_~next~0) (<= 377 (+ (* c_~prev~0 89) .cse2)) (forall ((v_~cur~0_26 Int)) (or (and (forall ((aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse3 (* 2 v_~cur~0_26))) (or (< (+ aux_mod_v_~next~0_20_56 c_~i~0 (* 2 aux_mod_v_~cur~0_22_51) 10) (+ .cse3 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) c_~prev~0 (* 2 aux_div_v_~next~0_20_56))) (>= aux_mod_v_~cur~0_22_51 2) (>= aux_mod_v_~next~0_20_56 2) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (> 0 aux_mod_v_~cur~0_22_51) (< aux_div_v_~cur~0_22_51 (+ .cse3 c_~prev~0 1)) (< v_~prev~0_24 (+ c_~prev~0 v_~cur~0_26)) (> 0 aux_mod_v_~next~0_20_56)))) (forall ((aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse4 (* 2 v_~cur~0_26))) (or (>= aux_mod_v_~cur~0_22_51 2) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~cur~0_22_51) (< (+ aux_mod_v_~next~0_20_56 c_~j~0 (* 2 aux_mod_v_~cur~0_22_51) 10) (+ .cse4 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) c_~prev~0 (* 2 aux_div_v_~next~0_20_56))) (< aux_div_v_~cur~0_22_51 (+ .cse4 c_~prev~0 1)) (< v_~prev~0_24 (+ c_~prev~0 v_~cur~0_26)) (> 0 aux_mod_v_~next~0_20_56) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))))))) (not (<= c_~next~0 v_~cur~0_26)))) (forall ((aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse5 (* 2 v_~cur~0_26))) (or (< aux_div_v_~cur~0_22_51 (+ .cse5 c_~next~0 1)) (< v_~cur~0_26 (+ c_~prev~0 c_~next~0)) (>= aux_mod_v_~cur~0_22_51 2) (< v_~prev~0_24 (+ c_~next~0 v_~cur~0_26)) (< (+ aux_mod_v_~next~0_20_56 c_~j~0 (* 2 aux_mod_v_~cur~0_22_51) 10) (+ .cse5 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) c_~next~0 (* 2 aux_div_v_~next~0_20_56))) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~cur~0_22_51) (> 0 aux_mod_v_~next~0_20_56) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2)))))) (forall ((aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (aux_mod_v_~next~0_20_56 Int)) (or (>= aux_mod_v_~cur~0_22_51 2) (< (+ aux_mod_v_~next~0_20_56 c_~j~0 (* 2 aux_mod_v_~cur~0_22_51) 10) (+ (* aux_div_v_~cur~0_22_51 4) (* 3 c_~prev~0) c_~next~0 (* 2 aux_div_v_~next~0_20_56))) (< aux_div_v_~cur~0_22_51 (+ c_~next~0 1)) (>= aux_mod_v_~next~0_20_56 2) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) c_~prev~0) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))) (> 0 aux_mod_v_~cur~0_22_51) (> 0 aux_mod_v_~next~0_20_56))) (<= (div (+ .cse6 (- 4) c_~next~0) (- 2)) .cse7) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))) (< (+ aux_mod_v_~next~0_20_56 c_~j~0 8) (+ (* 2 v_~cur~0_22) c_~next~0 (* 2 aux_div_v_~next~0_20_56))) (>= aux_mod_v_~next~0_20_56 2) (< v_~cur~0_22 (+ c_~prev~0 c_~next~0)) (> 0 aux_mod_v_~next~0_20_56))) (= (+ (- 1) c_~j~0) 0) (forall ((aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (aux_mod_v_~next~0_20_56 Int)) (or (>= aux_mod_v_~cur~0_22_51 2) (>= aux_mod_v_~next~0_20_56 2) (< (+ aux_mod_v_~next~0_20_56 c_~j~0 (* 2 aux_mod_v_~cur~0_22_51) 10) (+ (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) c_~prev~0 c_~next~0 (* 2 aux_div_v_~next~0_20_56))) (> 0 aux_mod_v_~cur~0_22_51) (< aux_div_v_~cur~0_22_51 (+ c_~prev~0 c_~next~0 1)) (< v_~prev~0_24 c_~next~0) (> 0 aux_mod_v_~next~0_20_56) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))))) (<= (div (+ c_~prev~0 .cse6) (- 2)) c_~next~0) (<= 377 (+ .cse2 (* 89 c_~cur~0))) (<= 2 c_~cur~0) (<= c_~j~0 1) (forall ((v_~cur~0_22 Int)) (or (not (<= c_~next~0 v_~cur~0_22)) (and (forall ((aux_div_v_~next~0_20_56 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2))) (not (<= (+ (* 2 v_~cur~0_22) c_~prev~0 (* 2 aux_div_v_~next~0_20_56)) (+ aux_mod_v_~next~0_20_56 c_~j~0 8))) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~next~0_20_56))) (forall ((aux_div_v_~next~0_20_56 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (>= aux_mod_v_~next~0_20_56 2) (not (<= (+ (* 2 v_~cur~0_22) c_~prev~0 (* 2 aux_div_v_~next~0_20_56)) (+ aux_mod_v_~next~0_20_56 c_~i~0 8))) (> 0 aux_mod_v_~next~0_20_56)))))) (forall ((aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (aux_mod_v_~next~0_20_56 Int)) (or (< (+ aux_mod_v_~next~0_20_56 c_~i~0 (* 2 aux_mod_v_~cur~0_22_51) 10) (+ (* aux_div_v_~cur~0_22_51 4) (* 3 c_~prev~0) c_~next~0 (* 2 aux_div_v_~next~0_20_56))) (>= aux_mod_v_~cur~0_22_51 2) (< aux_div_v_~cur~0_22_51 (+ c_~next~0 1)) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~cur~0_22_51) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) c_~prev~0) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (> 0 aux_mod_v_~next~0_20_56))) (<= 0 c_~prev~0) (forall ((v_~cur~0_28 Int) (aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse8 (* 2 v_~cur~0_26))) (or (< (+ aux_mod_v_~next~0_20_56 c_~j~0 (* 2 aux_mod_v_~cur~0_22_51) 10) (+ .cse8 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) c_~next~0 (* 2 aux_div_v_~next~0_20_56) v_~cur~0_28)) (< aux_div_v_~cur~0_22_51 (+ .cse8 c_~next~0 v_~cur~0_28 1)) (< v_~cur~0_28 (+ c_~prev~0 c_~next~0)) (< v_~prev~0_24 (+ c_~next~0 v_~cur~0_28 v_~cur~0_26)) (>= aux_mod_v_~cur~0_22_51 2) (>= aux_mod_v_~next~0_20_56 2) (> 0 aux_mod_v_~cur~0_22_51) (< v_~cur~0_26 (+ (* 2 v_~cur~0_28) c_~next~0)) (> 0 aux_mod_v_~next~0_20_56) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 c_~j~0) (* aux_mod_v_~next~0_20_56 2)))))) (<= (+ 1 c_~cur~0) c_~next~0) (forall ((aux_div_v_~cur~0_21_56 Int) (aux_mod_v_~cur~0_21_56 Int)) (or (>= aux_mod_v_~cur~0_21_56 2) (not (<= (+ (* 2 aux_div_v_~cur~0_21_56) c_~prev~0 c_~next~0) (+ c_~j~0 6 aux_mod_v_~cur~0_21_56))) (> 0 aux_mod_v_~cur~0_21_56) (<= (+ (* 5 aux_div_v_~cur~0_21_56) c_~prev~0) (+ 15 (* 2 aux_mod_v_~cur~0_21_56) (* 2 c_~j~0))))) (<= c_~j~0 .cse0) (forall ((aux_div_v_~cur~0_21_56 Int) (aux_mod_v_~cur~0_21_56 Int)) (or (<= (+ (* 5 aux_div_v_~cur~0_21_56) c_~prev~0) (+ 15 (* 2 aux_mod_v_~cur~0_21_56) (* 2 c_~i~0))) (>= aux_mod_v_~cur~0_21_56 2) (not (<= (+ (* 2 aux_div_v_~cur~0_21_56) c_~prev~0 c_~next~0) (+ 6 c_~i~0 aux_mod_v_~cur~0_21_56))) (> 0 aux_mod_v_~cur~0_21_56))) (forall ((aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (aux_mod_v_~next~0_20_56 Int)) (or (< (+ aux_mod_v_~next~0_20_56 c_~i~0 (* 2 aux_mod_v_~cur~0_22_51) 10) (+ (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) c_~prev~0 c_~next~0 (* 2 aux_div_v_~next~0_20_56))) (>= aux_mod_v_~cur~0_22_51 2) (>= aux_mod_v_~next~0_20_56 2) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (> 0 aux_mod_v_~cur~0_22_51) (< aux_div_v_~cur~0_22_51 (+ c_~prev~0 c_~next~0 1)) (< v_~prev~0_24 c_~next~0) (> 0 aux_mod_v_~next~0_20_56))) (<= 377 (+ (* 89 c_~next~0) (* 55 c_~cur~0))) (forall ((aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse9 (* 2 v_~cur~0_26))) (or (< aux_div_v_~cur~0_22_51 (+ .cse9 c_~next~0 1)) (< v_~cur~0_26 (+ c_~prev~0 c_~next~0)) (>= aux_mod_v_~cur~0_22_51 2) (< v_~prev~0_24 (+ c_~next~0 v_~cur~0_26)) (>= aux_mod_v_~next~0_20_56 2) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (> 0 aux_mod_v_~cur~0_22_51) (< (+ aux_mod_v_~next~0_20_56 c_~i~0 (* 2 aux_mod_v_~cur~0_22_51) 10) (+ .cse9 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) c_~next~0 (* 2 aux_div_v_~next~0_20_56))) (> 0 aux_mod_v_~next~0_20_56)))) (<= c_~i~0 1) (forall ((v_~cur~0_28 Int) (aux_mod_v_~cur~0_22_51 Int) (aux_div_v_~next~0_20_56 Int) (aux_div_v_~cur~0_22_51 Int) (v_~prev~0_24 Int) (v_~cur~0_26 Int) (aux_mod_v_~next~0_20_56 Int)) (let ((.cse10 (* 2 v_~cur~0_26))) (or (< aux_div_v_~cur~0_22_51 (+ .cse10 c_~next~0 v_~cur~0_28 1)) (< v_~cur~0_28 (+ c_~prev~0 c_~next~0)) (< v_~prev~0_24 (+ c_~next~0 v_~cur~0_28 v_~cur~0_26)) (>= aux_mod_v_~cur~0_22_51 2) (>= aux_mod_v_~next~0_20_56 2) (<= (+ (* 5 aux_div_v_~next~0_20_56) (* 2 aux_div_v_~cur~0_22_51) v_~prev~0_24) (+ 21 aux_mod_v_~cur~0_22_51 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (> 0 aux_mod_v_~cur~0_22_51) (< (+ aux_mod_v_~next~0_20_56 c_~i~0 (* 2 aux_mod_v_~cur~0_22_51) 10) (+ .cse10 (* v_~prev~0_24 3) (* aux_div_v_~cur~0_22_51 4) c_~next~0 (* 2 aux_div_v_~next~0_20_56) v_~cur~0_28)) (< v_~cur~0_26 (+ (* 2 v_~cur~0_28) c_~next~0)) (> 0 aux_mod_v_~next~0_20_56)))) (<= (div (+ .cse1 (- 4) c_~next~0) (- 2)) .cse7) (<= 1 c_~cur~0) (forall ((aux_div_v_~next~0_20_56 Int) (v_~cur~0_22 Int) (aux_mod_v_~next~0_20_56 Int)) (or (<= (+ (* 5 aux_div_v_~next~0_20_56) v_~cur~0_22) (+ 20 (* 2 c_~i~0) (* aux_mod_v_~next~0_20_56 2))) (>= aux_mod_v_~next~0_20_56 2) (< v_~cur~0_22 (+ c_~prev~0 c_~next~0)) (< (+ aux_mod_v_~next~0_20_56 c_~i~0 8) (+ (* 2 v_~cur~0_22) c_~next~0 (* 2 aux_div_v_~next~0_20_56))) (> 0 aux_mod_v_~next~0_20_56))))) is different from false [2022-03-16 12:29:31,802 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-03-16 12:29:31,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2022-03-16 12:29:31,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-16 12:29:32,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 12:29:32,004 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:829) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.MaximalCausalityReduction.internalSuccessors(MaximalCausalityReduction.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.MaximalCausalityReduction.internalSuccessors(MaximalCausalityReduction.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.INwaOutgoingLetterAndTransitionProvider.lambda$0(INwaOutgoingLetterAndTransitionProvider.java:123) at de.uni_freiburg.informatik.ultimate.util.datastructures.relation.NestedIterator.nextLetter(NestedIterator.java:69) at de.uni_freiburg.informatik.ultimate.util.datastructures.relation.NestedIterator.(NestedIterator.java:62) at de.uni_freiburg.informatik.ultimate.util.datastructures.relation.NestedIteratorNoopConstruction.(NestedIteratorNoopConstruction.java:48) at de.uni_freiburg.informatik.ultimate.automata.nestedword.INwaOutgoingLetterAndTransitionProvider.lambda$1(INwaOutgoingLetterAndTransitionProvider.java:124) at java.base/java.lang.Iterable.spliterator(Iterable.java:101) at de.uni_freiburg.informatik.ultimate.automata.partialorder.DepthFirstTraversal.visitState(DepthFirstTraversal.java:197) at de.uni_freiburg.informatik.ultimate.automata.partialorder.DepthFirstTraversal.traverse(DepthFirstTraversal.java:127) at de.uni_freiburg.informatik.ultimate.automata.partialorder.DepthFirstTraversal.(DepthFirstTraversal.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderReductionFacade.apply(PartialOrderReductionFacade.java:246) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:440) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 53 more [2022-03-16 12:29:32,008 INFO L158 Benchmark]: Toolchain (without parser) took 612860.89ms. Allocated memory was 182.5MB in the beginning and 677.4MB in the end (delta: 494.9MB). Free memory was 122.9MB in the beginning and 337.1MB in the end (delta: -214.3MB). Peak memory consumption was 281.8MB. Max. memory is 8.0GB. [2022-03-16 12:29:32,008 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 182.5MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 12:29:32,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.49ms. Allocated memory was 182.5MB in the beginning and 235.9MB in the end (delta: 53.5MB). Free memory was 122.6MB in the beginning and 200.4MB in the end (delta: -77.8MB). Peak memory consumption was 16.7MB. Max. memory is 8.0GB. [2022-03-16 12:29:32,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.75ms. Allocated memory is still 235.9MB. Free memory was 200.4MB in the beginning and 198.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-16 12:29:32,009 INFO L158 Benchmark]: Boogie Preprocessor took 18.36ms. Allocated memory is still 235.9MB. Free memory was 198.3MB in the beginning and 196.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-16 12:29:32,010 INFO L158 Benchmark]: RCFGBuilder took 321.07ms. Allocated memory is still 235.9MB. Free memory was 196.8MB in the beginning and 183.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-16 12:29:32,010 INFO L158 Benchmark]: TraceAbstraction took 612086.04ms. Allocated memory was 235.9MB in the beginning and 677.4MB in the end (delta: 441.5MB). Free memory was 183.6MB in the beginning and 337.1MB in the end (delta: -153.5MB). Peak memory consumption was 290.0MB. Max. memory is 8.0GB. [2022-03-16 12:29:32,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 182.5MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 392.49ms. Allocated memory was 182.5MB in the beginning and 235.9MB in the end (delta: 53.5MB). Free memory was 122.6MB in the beginning and 200.4MB in the end (delta: -77.8MB). Peak memory consumption was 16.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.75ms. Allocated memory is still 235.9MB. Free memory was 200.4MB in the beginning and 198.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.36ms. Allocated memory is still 235.9MB. Free memory was 198.3MB in the beginning and 196.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 321.07ms. Allocated memory is still 235.9MB. Free memory was 196.8MB in the beginning and 183.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 612086.04ms. Allocated memory was 235.9MB in the beginning and 677.4MB in the end (delta: 441.5MB). Free memory was 183.6MB in the beginning and 337.1MB in the end (delta: -153.5MB). Peak memory consumption was 290.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-16 12:29:32,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 Received shutdown request...