/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 04:52:05,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 04:52:05,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 04:52:05,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-16 04:52:05,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-16 04:52:05,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-16 04:52:05,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-16 04:52:05,880 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-MCRwithDepranks.epf [2022-02-16 04:52:05,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 04:52:05,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 04:52:05,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 04:52:05,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 04:52:05,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 04:52:05,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 04:52:05,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 04:52:05,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 04:52:05,905 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 04:52:05,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 04:52:05,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 04:52:05,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 04:52:05,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 04:52:05,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 04:52:05,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 04:52:05,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 04:52:05,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 04:52:05,907 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 04:52:05,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 04:52:05,907 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 04:52:05,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 04:52:05,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 04:52:05,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 04:52:05,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 04:52:05,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 04:52:05,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 04:52:05,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 04:52:05,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 04:52:05,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 04:52:05,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 04:52:05,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 04:52:05,909 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 04:52:05,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-16 04:52:05,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 04:52:05,909 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-16 04:52:05,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 04:52:06,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 04:52:06,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 04:52:06,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 04:52:06,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-16 04:52:06,119 INFO L275 PluginConnector]: CDTParser initialized [2022-02-16 04:52:06,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2022-02-16 04:52:06,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a928a2d3/669fcf5840184d44adc646a51489755e/FLAGb7189c4b9 [2022-02-16 04:52:06,482 INFO L306 CDTParser]: Found 1 translation units. [2022-02-16 04:52:06,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2022-02-16 04:52:06,482 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-16 04:52:06,482 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-16 04:52:06,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a928a2d3/669fcf5840184d44adc646a51489755e/FLAGb7189c4b9 [2022-02-16 04:52:06,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a928a2d3/669fcf5840184d44adc646a51489755e [2022-02-16 04:52:06,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 04:52:06,920 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-16 04:52:06,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-16 04:52:06,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-16 04:52:06,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-16 04:52:06,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:52:06" (1/1) ... [2022-02-16 04:52:06,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6207afa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:06, skipping insertion in model container [2022-02-16 04:52:06,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:52:06" (1/1) ... [2022-02-16 04:52:06,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-16 04:52:06,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-16 04:52:07,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 04:52:07,110 INFO L203 MainTranslator]: Completed pre-run [2022-02-16 04:52:07,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 04:52:07,126 INFO L208 MainTranslator]: Completed translation [2022-02-16 04:52:07,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07 WrapperNode [2022-02-16 04:52:07,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-16 04:52:07,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 04:52:07,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 04:52:07,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 04:52:07,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (1/1) ... [2022-02-16 04:52:07,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (1/1) ... [2022-02-16 04:52:07,148 INFO L137 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-02-16 04:52:07,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 04:52:07,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 04:52:07,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 04:52:07,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 04:52:07,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (1/1) ... [2022-02-16 04:52:07,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (1/1) ... [2022-02-16 04:52:07,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (1/1) ... [2022-02-16 04:52:07,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (1/1) ... [2022-02-16 04:52:07,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (1/1) ... [2022-02-16 04:52:07,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (1/1) ... [2022-02-16 04:52:07,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (1/1) ... [2022-02-16 04:52:07,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 04:52:07,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 04:52:07,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 04:52:07,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 04:52:07,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (1/1) ... [2022-02-16 04:52:07,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 04:52:07,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:52:07,205 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) [2022-02-16 04:52:07,224 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 [2022-02-16 04:52:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-16 04:52:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure worker_thread [2022-02-16 04:52:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_thread [2022-02-16 04:52:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 04:52:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 04:52:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-16 04:52:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-16 04:52:07,244 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 04:52:07,295 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 04:52:07,296 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 04:52:07,363 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 04:52:07,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 04:52:07,368 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-16 04:52:07,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:52:07 BoogieIcfgContainer [2022-02-16 04:52:07,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 04:52:07,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 04:52:07,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 04:52:07,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 04:52:07,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 04:52:06" (1/3) ... [2022-02-16 04:52:07,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a81e930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:52:07, skipping insertion in model container [2022-02-16 04:52:07,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:52:07" (2/3) ... [2022-02-16 04:52:07,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a81e930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:52:07, skipping insertion in model container [2022-02-16 04:52:07,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:52:07" (3/3) ... [2022-02-16 04:52:07,392 INFO L111 eAbstractionObserver]: Analyzing ICFG mainThreadTerminates.c [2022-02-16 04:52:07,395 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 04:52:07,396 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 04:52:07,396 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 04:52:07,396 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 04:52:07,417 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,417 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,417 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,417 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,418 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,418 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,418 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,418 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,419 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,419 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,419 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,420 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,420 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,420 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,421 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,421 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,421 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,421 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,422 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,422 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,422 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,422 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,423 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,423 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,426 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,426 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,426 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,427 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,427 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,427 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 04:52:07,429 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-16 04:52:07,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 04:52:07,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:52:07,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-16 04:52:07,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-16 04:52:07,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 04:52:07,528 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, 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 [2022-02-16 04:52:07,528 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-16 04:52:07,538 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 32 transitions, 69 flow [2022-02-16 04:52:07,565 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 77 states, 76 states have (on average 1.855263157894737) internal successors, (141), 76 states have internal predecessors, (141), 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) [2022-02-16 04:52:07,585 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 33 transitions and produced 34 states. [2022-02-16 04:52:07,587 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:07,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash 254801108, now seen corresponding path program 1 times [2022-02-16 04:52:07,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:07,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154412061] [2022-02-16 04:52:07,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:07,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:07,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:07,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154412061] [2022-02-16 04:52:07,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154412061] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 04:52:07,772 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 04:52:07,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-16 04:52:07,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887549750] [2022-02-16 04:52:07,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 04:52:07,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-16 04:52:07,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:07,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-16 04:52:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-16 04:52:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:07,798 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:07,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2022-02-16 04:52:07,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:07,813 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 33 transitions and produced 34 states. [2022-02-16 04:52:07,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:07,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 04:52:07,814 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash 254801139, now seen corresponding path program 1 times [2022-02-16 04:52:07,817 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:07,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283354204] [2022-02-16 04:52:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:07,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:07,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:07,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283354204] [2022-02-16 04:52:07,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283354204] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 04:52:07,909 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 04:52:07,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 04:52:07,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931308417] [2022-02-16 04:52:07,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 04:52:07,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 04:52:07,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 04:52:07,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 04:52:07,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:07,913 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:07,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-02-16 04:52:07,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:07,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:07,936 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 39 transitions and produced 40 states. [2022-02-16 04:52:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:07,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 04:52:07,938 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:07,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1567478423, now seen corresponding path program 1 times [2022-02-16 04:52:07,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:07,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116521018] [2022-02-16 04:52:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:07,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:07,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:07,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116521018] [2022-02-16 04:52:07,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116521018] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 04:52:07,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497124376] [2022-02-16 04:52:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:07,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 04:52:07,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:52:07,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 04:52:07,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-16 04:52:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:08,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-16 04:52:08,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 04:52:08,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:08,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 04:52:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:08,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497124376] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 04:52:08,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 04:52:08,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-02-16 04:52:08,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445470185] [2022-02-16 04:52:08,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 04:52:08,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-16 04:52:08,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:08,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-16 04:52:08,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-16 04:52:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:08,284 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:08,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2022-02-16 04:52:08,284 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:08,284 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:08,284 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:08,359 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 51 transitions and produced 52 states. [2022-02-16 04:52:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-16 04:52:08,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-16 04:52:08,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-16 04:52:08,569 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:08,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:08,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1231304671, now seen corresponding path program 2 times [2022-02-16 04:52:08,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:08,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887448848] [2022-02-16 04:52:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:08,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:08,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:08,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887448848] [2022-02-16 04:52:08,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887448848] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 04:52:08,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280965619] [2022-02-16 04:52:08,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-16 04:52:08,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 04:52:08,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:52:08,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 04:52:08,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-16 04:52:08,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-16 04:52:08,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 04:52:08,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-16 04:52:08,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 04:52:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:08,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 04:52:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:08,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280965619] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 04:52:08,867 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 04:52:08,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-02-16 04:52:08,868 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129036890] [2022-02-16 04:52:08,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 04:52:08,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-16 04:52:08,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:08,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-16 04:52:08,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-02-16 04:52:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:08,869 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:08,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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) [2022-02-16 04:52:08,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:08,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:08,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-16 04:52:08,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:08,977 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 57 transitions and produced 58 states. [2022-02-16 04:52:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-16 04:52:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-16 04:52:08,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-16 04:52:09,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 04:52:09,180 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:09,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash 212778883, now seen corresponding path program 3 times [2022-02-16 04:52:09,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:09,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726384725] [2022-02-16 04:52:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:09,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 04:52:09,195 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-16 04:52:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 04:52:09,226 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-16 04:52:09,226 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-16 04:52:09,227 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location worker_threadErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-16 04:52:09,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location worker_threadErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-02-16 04:52:09,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 3 remaining) [2022-02-16 04:52:09,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-16 04:52:09,233 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-02-16 04:52:09,236 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-16 04:52:09,236 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-16 04:52:09,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 04:52:09 BasicIcfg [2022-02-16 04:52:09,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-16 04:52:09,257 INFO L158 Benchmark]: Toolchain (without parser) took 2337.21ms. Allocated memory was 190.8MB in the beginning and 286.3MB in the end (delta: 95.4MB). Free memory was 131.8MB in the beginning and 161.0MB in the end (delta: -29.2MB). Peak memory consumption was 66.0MB. Max. memory is 8.0GB. [2022-02-16 04:52:09,257 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 190.8MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-16 04:52:09,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.36ms. Allocated memory was 190.8MB in the beginning and 286.3MB in the end (delta: 95.4MB). Free memory was 131.6MB in the beginning and 257.5MB in the end (delta: -125.9MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-02-16 04:52:09,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.33ms. Allocated memory is still 286.3MB. Free memory was 257.5MB in the beginning and 256.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-16 04:52:09,258 INFO L158 Benchmark]: Boogie Preprocessor took 19.39ms. Allocated memory is still 286.3MB. Free memory was 256.5MB in the beginning and 255.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-16 04:52:09,259 INFO L158 Benchmark]: RCFGBuilder took 200.25ms. Allocated memory is still 286.3MB. Free memory was 255.4MB in the beginning and 244.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-16 04:52:09,259 INFO L158 Benchmark]: TraceAbstraction took 1885.71ms. Allocated memory is still 286.3MB. Free memory was 243.9MB in the beginning and 161.0MB in the end (delta: 82.8MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. [2022-02-16 04:52:09,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 190.8MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.36ms. Allocated memory was 190.8MB in the beginning and 286.3MB in the end (delta: 95.4MB). Free memory was 131.6MB in the beginning and 257.5MB in the end (delta: -125.9MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.33ms. Allocated memory is still 286.3MB. Free memory was 257.5MB in the beginning and 256.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.39ms. Allocated memory is still 286.3MB. Free memory was 256.5MB in the beginning and 255.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 200.25ms. Allocated memory is still 286.3MB. Free memory was 255.4MB in the beginning and 244.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1885.71ms. Allocated memory is still 286.3MB. Free memory was 243.9MB in the beginning and 161.0MB in the end (delta: 82.8MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 22]: assertion can be violated assertion can be violated We found a FailurePath: [L26] 0 pthread_t thread; VAL [thread={2:0}] [L27] FCALL, FORK 0 pthread_create(&thread, NULL, worker_thread, NULL) VAL [arg={0:0}, pthread_create(&thread, NULL, worker_thread, NULL)=-1, thread={2:0}] [L18] 1 int x = 0; VAL [arg={0:0}, arg={0:0}, x=0] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=0] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=1] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=1] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=2] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=2] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=3] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=3] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=4] [L19] COND FALSE 1 !(x < 4) VAL [arg={0:0}, arg={0:0}, x=4] [L22] 1 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=4] - UnprovableResult [Line: 27]: 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, 42 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=0, InterpolantAutomatonStates: 26, 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, 0.6s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 342 SizeOfPredicates, 8 NumberOfNonLiveVariables, 144 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/48 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! [2022-02-16 04:52:09,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-16 04:52:09,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...