/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 05:06:25,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 05:06:25,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 05:06:25,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 05:06:25,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 05:06:25,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 05:06:25,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 05:06:25,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 05:06:25,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 05:06:25,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 05:06:25,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 05:06:25,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 05:06:25,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 05:06:25,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 05:06:25,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 05:06:25,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 05:06:25,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 05:06:25,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 05:06:25,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 05:06:25,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 05:06:25,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 05:06:25,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 05:06:25,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 05:06:25,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 05:06:25,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 05:06:25,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 05:06:25,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 05:06:25,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 05:06:25,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 05:06:25,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-19 05:06:25,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 05:06:25,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 05:06:25,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 05:06:25,515 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-PN-NoLbe-Before.epf [2022-01-19 05:06:25,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 05:06:25,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 05:06:25,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 05:06:25,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 05:06:25,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 05:06:25,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 05:06:25,537 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 05:06:25,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 05:06:25,538 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 05:06:25,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 05:06:25,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 05:06:25,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 05:06:25,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 05:06:25,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 05:06:25,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 05:06:25,539 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 05:06:25,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 05:06:25,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 05:06:25,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 05:06:25,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 05:06:25,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 05:06:25,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 05:06:25,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 05:06:25,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:06:25,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 05:06:25,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 05:06:25,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 05:06:25,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 05:06:25,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 05:06:25,540 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 05:06:25,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 05:06:25,540 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 05:06:25,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 05:06:25,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 05:06:25,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 05:06:25,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 05:06:25,696 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 05:06:25,696 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 05:06:25,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i [2022-01-19 05:06:25,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37fe6e1c7/003f6051909e4ba88242de7565fa2e20/FLAG6a679b211 [2022-01-19 05:06:26,184 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 05:06:26,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i [2022-01-19 05:06:26,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37fe6e1c7/003f6051909e4ba88242de7565fa2e20/FLAG6a679b211 [2022-01-19 05:06:26,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37fe6e1c7/003f6051909e4ba88242de7565fa2e20 [2022-01-19 05:06:26,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 05:06:26,222 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 05:06:26,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 05:06:26,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 05:06:26,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 05:06:26,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1520e1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26, skipping insertion in model container [2022-01-19 05:06:26,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 05:06:26,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 05:06:26,699 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2022-01-19 05:06:26,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:06:26,733 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 05:06:26,768 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2022-01-19 05:06:26,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:06:26,840 INFO L208 MainTranslator]: Completed translation [2022-01-19 05:06:26,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26 WrapperNode [2022-01-19 05:06:26,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 05:06:26,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 05:06:26,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 05:06:26,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 05:06:26,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,878 INFO L137 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-01-19 05:06:26,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 05:06:26,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 05:06:26,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 05:06:26,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 05:06:26,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 05:06:26,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 05:06:26,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 05:06:26,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 05:06:26,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (1/1) ... [2022-01-19 05:06:26,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:06:26,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:06:26,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 05:06:26,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 05:06:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 05:06:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 05:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 05:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 05:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-01-19 05:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 05:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-19 05:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 05:06:26,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 05:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 05:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 05:06:26,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 05:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 05:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 05:06:26,960 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 05:06:27,116 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 05:06:27,117 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 05:06:27,241 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 05:06:27,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 05:06:27,258 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 05:06:27,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:06:27 BoogieIcfgContainer [2022-01-19 05:06:27,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 05:06:27,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 05:06:27,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 05:06:27,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 05:06:27,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 05:06:26" (1/3) ... [2022-01-19 05:06:27,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cd3124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:06:27, skipping insertion in model container [2022-01-19 05:06:27,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:06:26" (2/3) ... [2022-01-19 05:06:27,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cd3124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:06:27, skipping insertion in model container [2022-01-19 05:06:27,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:06:27" (3/3) ... [2022-01-19 05:06:27,265 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2022-01-19 05:06:27,268 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 05:06:27,268 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-19 05:06:27,268 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 05:06:27,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,302 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,302 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,303 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,303 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,306 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,307 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,307 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,307 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,307 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:06:27,311 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-19 05:06:27,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 05:06:27,347 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 05:06:27,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 05:06:27,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 220 flow [2022-01-19 05:06:27,392 INFO L129 PetriNetUnfolder]: 4/123 cut-off events. [2022-01-19 05:06:27,392 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 05:06:27,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 123 events. 4/123 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 171 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 76. Up to 3 conditions per place. [2022-01-19 05:06:27,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 106 transitions, 220 flow [2022-01-19 05:06:27,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 92 transitions, 190 flow [2022-01-19 05:06:27,403 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2022-01-19 05:06:27,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:06:27,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:06:27,404 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:06:27,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 05:06:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:06:27,408 INFO L85 PathProgramCache]: Analyzing trace with hash 262582575, now seen corresponding path program 1 times [2022-01-19 05:06:27,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:06:27,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573963563] [2022-01-19 05:06:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:06:27,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:06:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:06:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:06:27,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:06:27,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573963563] [2022-01-19 05:06:27,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573963563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:06:27,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:06:27,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 05:06:27,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492836908] [2022-01-19 05:06:27,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:06:27,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 05:06:27,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:06:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 05:06:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 05:06:27,785 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 106 [2022-01-19 05:06:27,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:27,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:06:27,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 106 [2022-01-19 05:06:27,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:06:27,897 INFO L129 PetriNetUnfolder]: 3/105 cut-off events. [2022-01-19 05:06:27,898 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 05:06:27,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 105 events. 3/105 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 39. Up to 12 conditions per place. [2022-01-19 05:06:27,899 INFO L132 encePairwiseOnDemand]: 91/106 looper letters, 15 selfloop transitions, 13 changer transitions 1/92 dead transitions. [2022-01-19 05:06:27,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 92 transitions, 248 flow [2022-01-19 05:06:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 05:06:27,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 05:06:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 556 transitions. [2022-01-19 05:06:27,909 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7493261455525606 [2022-01-19 05:06:27,910 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 556 transitions. [2022-01-19 05:06:27,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 556 transitions. [2022-01-19 05:06:27,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:06:27,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 556 transitions. [2022-01-19 05:06:27,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.42857142857143) internal successors, (556), 7 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:27,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:27,925 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:27,926 INFO L186 Difference]: Start difference. First operand has 93 places, 92 transitions, 190 flow. Second operand 7 states and 556 transitions. [2022-01-19 05:06:27,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 92 transitions, 248 flow [2022-01-19 05:06:27,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 05:06:27,930 INFO L242 Difference]: Finished difference. Result has 95 places, 89 transitions, 222 flow [2022-01-19 05:06:27,931 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=222, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2022-01-19 05:06:27,933 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 2 predicate places. [2022-01-19 05:06:27,933 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 222 flow [2022-01-19 05:06:27,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:27,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:06:27,934 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:06:27,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 05:06:27,934 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 05:06:27,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:06:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1110563530, now seen corresponding path program 1 times [2022-01-19 05:06:27,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:06:27,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345107429] [2022-01-19 05:06:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:06:27,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:06:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:06:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:06:28,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:06:28,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345107429] [2022-01-19 05:06:28,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345107429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:06:28,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:06:28,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 05:06:28,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455830047] [2022-01-19 05:06:28,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:06:28,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 05:06:28,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:06:28,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 05:06:28,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 05:06:28,023 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 106 [2022-01-19 05:06:28,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:28,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:06:28,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 106 [2022-01-19 05:06:28,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:06:28,095 INFO L129 PetriNetUnfolder]: 3/101 cut-off events. [2022-01-19 05:06:28,095 INFO L130 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-01-19 05:06:28,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 101 events. 3/101 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 99. Up to 13 conditions per place. [2022-01-19 05:06:28,097 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 17 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2022-01-19 05:06:28,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 286 flow [2022-01-19 05:06:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 05:06:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 05:06:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 552 transitions. [2022-01-19 05:06:28,104 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7439353099730458 [2022-01-19 05:06:28,104 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 552 transitions. [2022-01-19 05:06:28,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 552 transitions. [2022-01-19 05:06:28,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:06:28,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 552 transitions. [2022-01-19 05:06:28,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:28,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:28,108 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:28,108 INFO L186 Difference]: Start difference. First operand has 95 places, 89 transitions, 222 flow. Second operand 7 states and 552 transitions. [2022-01-19 05:06:28,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 286 flow [2022-01-19 05:06:28,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 276 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 05:06:28,113 INFO L242 Difference]: Finished difference. Result has 97 places, 88 transitions, 240 flow [2022-01-19 05:06:28,113 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2022-01-19 05:06:28,114 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 4 predicate places. [2022-01-19 05:06:28,114 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 240 flow [2022-01-19 05:06:28,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:28,114 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:06:28,115 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:06:28,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 05:06:28,115 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 05:06:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:06:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash -367857545, now seen corresponding path program 1 times [2022-01-19 05:06:28,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:06:28,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503859414] [2022-01-19 05:06:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:06:28,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:06:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:06:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:06:28,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:06:28,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503859414] [2022-01-19 05:06:28,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503859414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:06:28,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:06:28,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 05:06:28,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613656510] [2022-01-19 05:06:28,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:06:28,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 05:06:28,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:06:28,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 05:06:28,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 05:06:28,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-01-19 05:06:28,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:28,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:06:28,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-01-19 05:06:28,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:06:28,226 INFO L129 PetriNetUnfolder]: 2/110 cut-off events. [2022-01-19 05:06:28,226 INFO L130 PetriNetUnfolder]: For 40/42 co-relation queries the response was YES. [2022-01-19 05:06:28,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 110 events. 2/110 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 3/112 useless extension candidates. Maximal degree in co-relation 112. Up to 15 conditions per place. [2022-01-19 05:06:28,227 INFO L132 encePairwiseOnDemand]: 101/106 looper letters, 11 selfloop transitions, 5 changer transitions 11/90 dead transitions. [2022-01-19 05:06:28,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 283 flow [2022-01-19 05:06:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 05:06:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 05:06:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2022-01-19 05:06:28,229 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8773584905660378 [2022-01-19 05:06:28,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2022-01-19 05:06:28,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2022-01-19 05:06:28,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:06:28,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2022-01-19 05:06:28,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:28,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2022-01-19 05:06:28,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2022-01-19 05:06:28,231 INFO L186 Difference]: Start difference. First operand has 97 places, 88 transitions, 240 flow. Second operand 3 states and 279 transitions. [2022-01-19 05:06:28,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 283 flow [2022-01-19 05:06:28,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 265 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-01-19 05:06:28,233 INFO L242 Difference]: Finished difference. Result has 96 places, 78 transitions, 212 flow [2022-01-19 05:06:28,233 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2022-01-19 05:06:28,234 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 3 predicate places. [2022-01-19 05:06:28,234 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 212 flow [2022-01-19 05:06:28,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:06:28,234 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:06:28,234 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:06:28,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 05:06:28,235 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 05:06:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:06:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash -771862539, now seen corresponding path program 1 times [2022-01-19 05:06:28,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:06:28,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822630187] [2022-01-19 05:06:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:06:28,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:06:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 05:06:28,273 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-19 05:06:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 05:06:28,318 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-19 05:06:28,318 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-19 05:06:28,319 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-19 05:06:28,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-01-19 05:06:28,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-01-19 05:06:28,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-01-19 05:06:28,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 5 remaining) [2022-01-19 05:06:28,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 05:06:28,327 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-19 05:06:28,330 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 05:06:28,330 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 05:06:28,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 05:06:28 BasicIcfg [2022-01-19 05:06:28,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 05:06:28,375 INFO L158 Benchmark]: Toolchain (without parser) took 2153.38ms. Allocated memory was 367.0MB in the beginning and 513.8MB in the end (delta: 146.8MB). Free memory was 335.6MB in the beginning and 402.0MB in the end (delta: -66.4MB). Peak memory consumption was 80.3MB. Max. memory is 16.0GB. [2022-01-19 05:06:28,375 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 367.0MB. Free memory is still 325.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 05:06:28,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 617.24ms. Allocated memory was 367.0MB in the beginning and 513.8MB in the end (delta: 146.8MB). Free memory was 335.6MB in the beginning and 440.8MB in the end (delta: -105.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.0GB. [2022-01-19 05:06:28,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.51ms. Allocated memory is still 513.8MB. Free memory was 440.8MB in the beginning and 438.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:06:28,376 INFO L158 Benchmark]: Boogie Preprocessor took 19.71ms. Allocated memory is still 513.8MB. Free memory was 438.1MB in the beginning and 435.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:06:28,377 INFO L158 Benchmark]: RCFGBuilder took 360.61ms. Allocated memory is still 513.8MB. Free memory was 435.8MB in the beginning and 417.8MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 05:06:28,377 INFO L158 Benchmark]: TraceAbstraction took 1113.92ms. Allocated memory is still 513.8MB. Free memory was 417.1MB in the beginning and 402.0MB in the end (delta: 15.1MB). Peak memory consumption was 18.1MB. Max. memory is 16.0GB. [2022-01-19 05:06:28,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 367.0MB. Free memory is still 325.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 617.24ms. Allocated memory was 367.0MB in the beginning and 513.8MB in the end (delta: 146.8MB). Free memory was 335.6MB in the beginning and 440.8MB in the end (delta: -105.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.51ms. Allocated memory is still 513.8MB. Free memory was 440.8MB in the beginning and 438.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.71ms. Allocated memory is still 513.8MB. Free memory was 438.1MB in the beginning and 435.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 360.61ms. Allocated memory is still 513.8MB. Free memory was 435.8MB in the beginning and 417.8MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 1113.92ms. Allocated memory is still 513.8MB. Free memory was 417.1MB in the beginning and 402.0MB in the end (delta: 15.1MB). Peak memory consumption was 18.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; VAL [t1={3:0}] [L1697] 0 pthread_mutex_t mutex; VAL [mutex={4:0}, t1={3:0}] [L1698] 0 int pdev; VAL [mutex={4:0}, pdev=0, t1={3:0}] [L1734] CALL, EXPR 0 module_init() [L1709] 0 pdev = 1 VAL [mutex={4:0}, pdev=1, t1={3:0}] [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, mutex={4:0}, pdev=1, t1={3:0}] [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, mutex={4:0}, pdev=1, t1={3:0}] [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1713] 0 return 0; VAL [\result=0, arg={0:0}, mutex={4:0}, pdev=1, t1={3:0}] [L1734] RET, EXPR 0 module_init() [L1734] COND FALSE 0 !(module_init()!=0) VAL [arg={0:0}, module_init()=0, mutex={4:0}, pdev=1, t1={3:0}] [L1735] CALL 0 module_exit() [L1721] 0 void *status; VAL [arg={0:0}, mutex={4:0}, pdev=1, status={5:0}, t1={3:0}] [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={4:0}, pdev=4, status={5:0}, t1={3:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={3:0}] [L1726] CALL 0 ldv_assert(pdev==4) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 111 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 43 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-19 05:06:28,412 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 0 Received shutdown request...