/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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 11:25:02,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 11:25:02,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 11:25:02,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 11:25:02,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 11:25:02,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 11:25:02,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 11:25:02,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 11:25:02,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 11:25:02,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 11:25:02,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 11:25:02,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 11:25:02,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 11:25:02,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 11:25:02,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 11:25:02,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 11:25:02,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 11:25:02,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 11:25:02,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 11:25:02,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 11:25:02,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 11:25:02,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 11:25:02,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 11:25:02,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 11:25:02,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 11:25:02,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 11:25:02,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 11:25:02,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 11:25:02,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 11:25:02,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 11:25:02,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 11:25:02,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 11:25:02,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 11:25:02,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 11:25:02,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 11:25:02,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 11:25:02,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 11:25:02,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 11:25:02,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 11:25:02,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 11:25:02,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 11:25:02,120 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-After.epf [2022-01-19 11:25:02,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 11:25:02,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 11:25:02,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 11:25:02,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 11:25:02,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 11:25:02,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 11:25:02,134 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 11:25:02,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 11:25:02,135 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 11:25:02,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 11:25:02,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 11:25:02,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 11:25:02,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 11:25:02,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 11:25:02,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 11:25:02,136 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 11:25:02,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 11:25:02,136 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 11:25:02,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 11:25:02,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 11:25:02,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 11:25:02,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 11:25:02,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 11:25:02,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:25:02,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 11:25:02,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 11:25:02,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 11:25:02,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 11:25:02,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 11:25:02,137 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 11:25:02,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 11:25:02,138 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 11:25:02,138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 11:25:02,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 11:25:02,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 11:25:02,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 11:25:02,348 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 11:25:02,350 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 11:25:02,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2022-01-19 11:25:02,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264a7ff4c/92985efa3ebf4b1ea97e29a4b5224b89/FLAGa673e70df [2022-01-19 11:25:02,860 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 11:25:02,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2022-01-19 11:25:02,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264a7ff4c/92985efa3ebf4b1ea97e29a4b5224b89/FLAGa673e70df [2022-01-19 11:25:02,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264a7ff4c/92985efa3ebf4b1ea97e29a4b5224b89 [2022-01-19 11:25:02,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 11:25:02,885 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 11:25:02,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 11:25:02,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 11:25:02,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 11:25:02,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:25:02" (1/1) ... [2022-01-19 11:25:02,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b066ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:02, skipping insertion in model container [2022-01-19 11:25:02,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:25:02" (1/1) ... [2022-01-19 11:25:02,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 11:25:02,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 11:25:03,331 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_2-join.i[76153,76166] [2022-01-19 11:25:03,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:25:03,366 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 11:25:03,417 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_2-join.i[76153,76166] [2022-01-19 11:25:03,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:25:03,509 INFO L208 MainTranslator]: Completed translation [2022-01-19 11:25:03,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03 WrapperNode [2022-01-19 11:25:03,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 11:25:03,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 11:25:03,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 11:25:03,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 11:25:03,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (1/1) ... [2022-01-19 11:25:03,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (1/1) ... [2022-01-19 11:25:03,576 INFO L137 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-01-19 11:25:03,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 11:25:03,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 11:25:03,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 11:25:03,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 11:25:03,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (1/1) ... [2022-01-19 11:25:03,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (1/1) ... [2022-01-19 11:25:03,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (1/1) ... [2022-01-19 11:25:03,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (1/1) ... [2022-01-19 11:25:03,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (1/1) ... [2022-01-19 11:25:03,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (1/1) ... [2022-01-19 11:25:03,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (1/1) ... [2022-01-19 11:25:03,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 11:25:03,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 11:25:03,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 11:25:03,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 11:25:03,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (1/1) ... [2022-01-19 11:25:03,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:25:03,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:25:03,663 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 11:25:03,671 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 11:25:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 11:25:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 11:25:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 11:25:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 11:25:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-01-19 11:25:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 11:25:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-19 11:25:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 11:25:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 11:25:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 11:25:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 11:25:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 11:25:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 11:25:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 11:25:03,702 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 11:25:03,914 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 11:25:03,916 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 11:25:04,098 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 11:25:04,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 11:25:04,125 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 11:25:04,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:25:04 BoogieIcfgContainer [2022-01-19 11:25:04,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 11:25:04,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 11:25:04,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 11:25:04,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 11:25:04,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 11:25:02" (1/3) ... [2022-01-19 11:25:04,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdc6f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:25:04, skipping insertion in model container [2022-01-19 11:25:04,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:25:03" (2/3) ... [2022-01-19 11:25:04,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdc6f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:25:04, skipping insertion in model container [2022-01-19 11:25:04,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:25:04" (3/3) ... [2022-01-19 11:25:04,134 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-01-19 11:25:04,137 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 11:25:04,138 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-19 11:25:04,138 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 11:25:04,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,172 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,172 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,172 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,173 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,173 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,178 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,178 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:25:04,181 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-19 11:25:04,215 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 11:25:04,222 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 11:25:04,222 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 11:25:04,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 220 flow [2022-01-19 11:25:04,255 INFO L129 PetriNetUnfolder]: 4/120 cut-off events. [2022-01-19 11:25:04,255 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 11:25:04,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 120 events. 4/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 164 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2022-01-19 11:25:04,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 106 transitions, 220 flow [2022-01-19 11:25:04,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 87 transitions, 180 flow [2022-01-19 11:25:04,265 INFO L129 PetriNetUnfolder]: 1/36 cut-off events. [2022-01-19 11:25:04,265 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:25:04,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:25:04,266 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 11:25:04,266 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 11:25:04,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:25:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1430332822, now seen corresponding path program 1 times [2022-01-19 11:25:04,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:25:04,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25923764] [2022-01-19 11:25:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:25:04,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:25:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:25:04,553 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 11:25:04,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:25:04,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25923764] [2022-01-19 11:25:04,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25923764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:25:04,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:25:04,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 11:25:04,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850332260] [2022-01-19 11:25:04,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:25:04,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 11:25:04,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:25:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 11:25:04,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 11:25:04,588 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 106 [2022-01-19 11:25:04,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 180 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 11:25:04,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:25:04,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 106 [2022-01-19 11:25:04,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:25:04,698 INFO L129 PetriNetUnfolder]: 3/102 cut-off events. [2022-01-19 11:25:04,698 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 11:25:04,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 102 events. 3/102 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 1 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 51. Up to 11 conditions per place. [2022-01-19 11:25:04,699 INFO L132 encePairwiseOnDemand]: 94/106 looper letters, 14 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2022-01-19 11:25:04,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 228 flow [2022-01-19 11:25:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 11:25:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 11:25:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 551 transitions. [2022-01-19 11:25:04,717 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7425876010781671 [2022-01-19 11:25:04,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 551 transitions. [2022-01-19 11:25:04,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 551 transitions. [2022-01-19 11:25:04,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:25:04,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 551 transitions. [2022-01-19 11:25:04,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 0 states have call successors, (0), 0 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 11:25:04,731 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 11:25:04,732 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 11:25:04,733 INFO L186 Difference]: Start difference. First operand has 90 places, 87 transitions, 180 flow. Second operand 7 states and 551 transitions. [2022-01-19 11:25:04,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 228 flow [2022-01-19 11:25:04,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 11:25:04,739 INFO L242 Difference]: Finished difference. Result has 92 places, 85 transitions, 202 flow [2022-01-19 11:25:04,740 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=202, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2022-01-19 11:25:04,743 INFO L334 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2022-01-19 11:25:04,743 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 202 flow [2022-01-19 11:25:04,744 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 11:25:04,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:25:04,744 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 11:25:04,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 11:25:04,745 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 11:25:04,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:25:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2117080854, now seen corresponding path program 1 times [2022-01-19 11:25:04,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:25:04,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468613685] [2022-01-19 11:25:04,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:25:04,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:25:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:25:04,897 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 11:25:04,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:25:04,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468613685] [2022-01-19 11:25:04,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468613685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:25:04,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:25:04,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 11:25:04,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127371099] [2022-01-19 11:25:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:25:04,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 11:25:04,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:25:04,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 11:25:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 11:25:04,900 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 106 [2022-01-19 11:25:04,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 202 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 11:25:04,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:25:04,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 106 [2022-01-19 11:25:04,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:25:04,958 INFO L129 PetriNetUnfolder]: 3/100 cut-off events. [2022-01-19 11:25:04,958 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-01-19 11:25:04,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 100 events. 3/100 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 0 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 44. Up to 12 conditions per place. [2022-01-19 11:25:04,960 INFO L132 encePairwiseOnDemand]: 96/106 looper letters, 16 selfloop transitions, 5 changer transitions 7/85 dead transitions. [2022-01-19 11:25:04,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 256 flow [2022-01-19 11:25:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 11:25:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 11:25:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2022-01-19 11:25:04,962 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7398921832884097 [2022-01-19 11:25:04,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2022-01-19 11:25:04,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2022-01-19 11:25:04,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:25:04,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2022-01-19 11:25:04,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 11:25:04,964 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 11:25:04,965 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 11:25:04,965 INFO L186 Difference]: Start difference. First operand has 92 places, 85 transitions, 202 flow. Second operand 7 states and 549 transitions. [2022-01-19 11:25:04,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 256 flow [2022-01-19 11:25:04,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 85 transitions, 238 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-01-19 11:25:04,967 INFO L242 Difference]: Finished difference. Result has 91 places, 76 transitions, 174 flow [2022-01-19 11:25:04,967 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=91, PETRI_TRANSITIONS=76} [2022-01-19 11:25:04,968 INFO L334 CegarLoopForPetriNet]: 90 programPoint places, 1 predicate places. [2022-01-19 11:25:04,968 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 174 flow [2022-01-19 11:25:04,968 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 11:25:04,968 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:25:04,969 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] [2022-01-19 11:25:04,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 11:25:04,969 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 11:25:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:25:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash 447259994, now seen corresponding path program 1 times [2022-01-19 11:25:04,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:25:04,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792720695] [2022-01-19 11:25:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:25:04,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:25:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:25:05,041 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 11:25:05,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:25:05,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792720695] [2022-01-19 11:25:05,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792720695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:25:05,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:25:05,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 11:25:05,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192478136] [2022-01-19 11:25:05,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:25:05,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 11:25:05,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:25:05,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 11:25:05,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 11:25:05,044 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-01-19 11:25:05,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 76 transitions, 174 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 11:25:05,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:25:05,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-01-19 11:25:05,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:25:05,075 INFO L129 PetriNetUnfolder]: 2/100 cut-off events. [2022-01-19 11:25:05,075 INFO L130 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-01-19 11:25:05,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 100 events. 2/100 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 109 event pairs, 0 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 26. Up to 13 conditions per place. [2022-01-19 11:25:05,075 INFO L132 encePairwiseOnDemand]: 101/106 looper letters, 11 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2022-01-19 11:25:05,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 215 flow [2022-01-19 11:25:05,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 11:25:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 11:25:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2022-01-19 11:25:05,076 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8710691823899371 [2022-01-19 11:25:05,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2022-01-19 11:25:05,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2022-01-19 11:25:05,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:25:05,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2022-01-19 11:25:05,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 11:25:05,078 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 11:25:05,078 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 11:25:05,078 INFO L186 Difference]: Start difference. First operand has 91 places, 76 transitions, 174 flow. Second operand 3 states and 277 transitions. [2022-01-19 11:25:05,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 215 flow [2022-01-19 11:25:05,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 203 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 11:25:05,080 INFO L242 Difference]: Finished difference. Result has 82 places, 78 transitions, 194 flow [2022-01-19 11:25:05,081 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2022-01-19 11:25:05,082 INFO L334 CegarLoopForPetriNet]: 90 programPoint places, -8 predicate places. [2022-01-19 11:25:05,082 INFO L470 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 194 flow [2022-01-19 11:25:05,082 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 11:25:05,082 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:25:05,083 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] [2022-01-19 11:25:05,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 11:25:05,083 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 11:25:05,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:25:05,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1791891516, now seen corresponding path program 1 times [2022-01-19 11:25:05,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:25:05,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386632922] [2022-01-19 11:25:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:25:05,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:25:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 11:25:05,105 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-19 11:25:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 11:25:05,143 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-19 11:25:05,143 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-19 11:25:05,144 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-19 11:25:05,145 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-01-19 11:25:05,145 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-01-19 11:25:05,146 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-01-19 11:25:05,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 5 remaining) [2022-01-19 11:25:05,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 11:25:05,150 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-19 11:25:05,153 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 11:25:05,153 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 11:25:05,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 11:25:05 BasicIcfg [2022-01-19 11:25:05,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 11:25:05,188 INFO L158 Benchmark]: Toolchain (without parser) took 2303.40ms. Allocated memory was 369.1MB in the beginning and 503.3MB in the end (delta: 134.2MB). Free memory was 309.5MB in the beginning and 418.3MB in the end (delta: -108.7MB). Peak memory consumption was 29.5MB. Max. memory is 16.0GB. [2022-01-19 11:25:05,189 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 369.1MB. Free memory is still 329.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 11:25:05,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 624.53ms. Allocated memory was 369.1MB in the beginning and 503.3MB in the end (delta: 134.2MB). Free memory was 309.4MB in the beginning and 429.9MB in the end (delta: -120.5MB). Peak memory consumption was 18.0MB. Max. memory is 16.0GB. [2022-01-19 11:25:05,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.12ms. Allocated memory is still 503.3MB. Free memory was 429.9MB in the beginning and 427.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-19 11:25:05,189 INFO L158 Benchmark]: Boogie Preprocessor took 39.48ms. Allocated memory is still 503.3MB. Free memory was 426.2MB in the beginning and 424.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:25:05,190 INFO L158 Benchmark]: RCFGBuilder took 509.94ms. Allocated memory is still 503.3MB. Free memory was 424.1MB in the beginning and 404.8MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 11:25:05,190 INFO L158 Benchmark]: TraceAbstraction took 1059.98ms. Allocated memory is still 503.3MB. Free memory was 403.9MB in the beginning and 418.3MB in the end (delta: -14.4MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 11:25:05,191 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 369.1MB. Free memory is still 329.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 624.53ms. Allocated memory was 369.1MB in the beginning and 503.3MB in the end (delta: 134.2MB). Free memory was 309.4MB in the beginning and 429.9MB in the end (delta: -120.5MB). Peak memory consumption was 18.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 65.12ms. Allocated memory is still 503.3MB. Free memory was 429.9MB in the beginning and 427.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.48ms. Allocated memory is still 503.3MB. Free memory was 426.2MB in the beginning and 424.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 509.94ms. Allocated memory is still 503.3MB. Free memory was 424.1MB in the beginning and 404.8MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 1059.98ms. Allocated memory is still 503.3MB. Free memory was 403.9MB in the beginning and 418.3MB in the end (delta: -14.4MB). There was no memory consumed. 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 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}] [L1714] 0 pdev = 2 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={3:0}] [L1717] CALL 0 ldv_assert(pdev==2) [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: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 40 mSDtfsCounter, 78 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=1, 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, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 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 11:25:05,224 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...