/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-FA-NoLbe.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-4b0ab11 [2022-03-01 17:03:43,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:03:43,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:03:43,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:03:43,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 17:03:43,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 17:03:43,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 17:03:43,410 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-FA-NoLbe.epf [2022-03-01 17:03:43,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:03:43,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:03:43,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:03:43,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:03:43,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:03:43,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:03:43,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:03:43,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:03:43,424 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:03:43,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:03:43,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:03:43,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:03:43,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:03:43,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:03:43,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:03:43,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:03:43,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:03:43,425 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:03:43,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:03:43,425 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:03:43,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:03:43,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:03:43,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:03:43,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:03:43,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:03:43,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:03:43,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:03:43,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:03:43,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:03:43,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:03:43,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:03:43,426 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:03:43,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:03:43,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:03:43,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:03:43,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:03:43,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:03:43,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 17:03:43,600 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 17:03:43,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2022-03-01 17:03:43,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ed5234e8/5299fc8aa6cf4802b84eff3c893fc78c/FLAG7b7fea375 [2022-03-01 17:03:44,011 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 17:03:44,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2022-03-01 17:03:44,012 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-01 17:03:44,012 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-01 17:03:44,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ed5234e8/5299fc8aa6cf4802b84eff3c893fc78c/FLAG7b7fea375 [2022-03-01 17:03:44,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ed5234e8/5299fc8aa6cf4802b84eff3c893fc78c [2022-03-01 17:03:44,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:03:44,052 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 17:03:44,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 17:03:44,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 17:03:44,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 17:03:44,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1feacb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44, skipping insertion in model container [2022-03-01 17:03:44,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 17:03:44,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 17:03:44,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 17:03:44,242 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 17:03:44,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 17:03:44,260 INFO L208 MainTranslator]: Completed translation [2022-03-01 17:03:44,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44 WrapperNode [2022-03-01 17:03:44,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 17:03:44,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:03:44,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:03:44,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:03:44,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,282 INFO L137 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-03-01 17:03:44,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:03:44,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:03:44,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:03:44,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:03:44,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:03:44,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:03:44,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:03:44,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:03:44,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (1/1) ... [2022-03-01 17:03:44,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:03:44,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:03:44,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 17:03:44,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 17:03:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 17:03:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure worker_thread [2022-03-01 17:03:44,356 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_thread [2022-03-01 17:03:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:03:44,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:03:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 17:03:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 17:03:44,357 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:03:44,408 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:03:44,410 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:03:44,519 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:03:44,523 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:03:44,523 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-01 17:03:44,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:03:44 BoogieIcfgContainer [2022-03-01 17:03:44,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:03:44,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:03:44,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:03:44,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:03:44,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 05:03:44" (1/3) ... [2022-03-01 17:03:44,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e710032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:03:44, skipping insertion in model container [2022-03-01 17:03:44,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:03:44" (2/3) ... [2022-03-01 17:03:44,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e710032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:03:44, skipping insertion in model container [2022-03-01 17:03:44,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:03:44" (3/3) ... [2022-03-01 17:03:44,530 INFO L111 eAbstractionObserver]: Analyzing ICFG mainThreadTerminates.c [2022-03-01 17:03:44,547 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:03:44,547 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:03:44,547 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:03:44,548 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:03:44,580 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,580 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,580 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,580 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,581 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,581 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,581 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,581 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,581 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,581 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,582 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,582 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,582 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,583 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,583 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,583 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,583 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,583 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,584 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,584 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,584 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,584 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,584 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,584 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,587 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,587 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,587 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,587 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,587 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,588 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:03:44,589 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-01 17:03:44,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:03:44,625 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=FINITE_AUTOMATA, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 17:03:44,625 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 17:03:44,639 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 32 transitions, 69 flow [2022-03-01 17:03:44,661 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) [2022-03-01 17:03:44,664 INFO L276 IsEmpty]: Start isEmpty. Operand 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) [2022-03-01 17:03:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-01 17:03:44,669 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:03:44,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:03:44,670 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-03-01 17:03:44,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:03:44,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1843131007, now seen corresponding path program 1 times [2022-03-01 17:03:44,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:03:44,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359362014] [2022-03-01 17:03:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:03:44,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:03:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:03:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:03:44,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:03:44,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359362014] [2022-03-01 17:03:44,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359362014] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:03:44,813 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:03:44,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 17:03:44,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886886415] [2022-03-01 17:03:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:03:44,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 17:03:44,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:03:44,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 17:03:44,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 17:03:44,846 INFO L87 Difference]: Start difference. First operand 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) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:44,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:03:44,865 INFO L93 Difference]: Finished difference Result 77 states and 133 transitions. [2022-03-01 17:03:44,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 17:03:44,867 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) Word has length 17 [2022-03-01 17:03:44,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:03:44,873 INFO L225 Difference]: With dead ends: 77 [2022-03-01 17:03:44,873 INFO L226 Difference]: Without dead ends: 77 [2022-03-01 17:03:44,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 17:03:44,877 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:03:44,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:03:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-03-01 17:03:44,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-03-01 17:03:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.75) internal successors, (133), 76 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2022-03-01 17:03:44,920 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 17 [2022-03-01 17:03:44,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:03:44,921 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2022-03-01 17:03:44,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:44,921 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2022-03-01 17:03:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-01 17:03:44,922 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:03:44,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:03:44,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:03:44,923 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-03-01 17:03:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:03:44,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1843130976, now seen corresponding path program 1 times [2022-03-01 17:03:44,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:03:44,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386443977] [2022-03-01 17:03:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:03:44,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:03:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:03:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:03:44,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:03:44,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386443977] [2022-03-01 17:03:44,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386443977] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:03:44,993 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:03:44,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:03:44,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414505872] [2022-03-01 17:03:44,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:03:44,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:03:44,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:03:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:03:44,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:03:44,995 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:45,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:03:45,021 INFO L93 Difference]: Finished difference Result 101 states and 178 transitions. [2022-03-01 17:03:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:03:45,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) Word has length 17 [2022-03-01 17:03:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:03:45,024 INFO L225 Difference]: With dead ends: 101 [2022-03-01 17:03:45,024 INFO L226 Difference]: Without dead ends: 101 [2022-03-01 17:03:45,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:03:45,025 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:03:45,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:03:45,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-03-01 17:03:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 85. [2022-03-01 17:03:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.7619047619047619) internal successors, (148), 84 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 148 transitions. [2022-03-01 17:03:45,033 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 148 transitions. Word has length 17 [2022-03-01 17:03:45,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:03:45,033 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 148 transitions. [2022-03-01 17:03:45,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 148 transitions. [2022-03-01 17:03:45,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:03:45,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:03:45,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:03:45,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 17:03:45,034 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-03-01 17:03:45,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:03:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1575236412, now seen corresponding path program 1 times [2022-03-01 17:03:45,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:03:45,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668756608] [2022-03-01 17:03:45,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:03:45,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:03:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:03:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:03:45,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:03:45,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668756608] [2022-03-01 17:03:45,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668756608] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:03:45,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782106392] [2022-03-01 17:03:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:03:45,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:03:45,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:03:45,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 17:03:45,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 17:03:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:03:45,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-01 17:03:45,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:03:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:03:45,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:03:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:03:45,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782106392] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:03:45,375 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:03:45,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-01 17:03:45,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106569845] [2022-03-01 17:03:45,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:03:45,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:03:45,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:03:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:03:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:03:45,381 INFO L87 Difference]: Start difference. First operand 85 states and 148 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:03:45,440 INFO L93 Difference]: Finished difference Result 149 states and 268 transitions. [2022-03-01 17:03:45,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:03:45,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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) Word has length 21 [2022-03-01 17:03:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:03:45,442 INFO L225 Difference]: With dead ends: 149 [2022-03-01 17:03:45,442 INFO L226 Difference]: Without dead ends: 149 [2022-03-01 17:03:45,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:03:45,443 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 95 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:03:45,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 192 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:03:45,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-03-01 17:03:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-03-01 17:03:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.8108108108108107) internal successors, (268), 148 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 268 transitions. [2022-03-01 17:03:45,453 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 268 transitions. Word has length 21 [2022-03-01 17:03:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:03:45,453 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 268 transitions. [2022-03-01 17:03:45,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:45,453 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 268 transitions. [2022-03-01 17:03:45,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-01 17:03:45,454 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:03:45,454 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:03:45,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-01 17:03:45,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:03:45,674 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-03-01 17:03:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:03:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1971303692, now seen corresponding path program 2 times [2022-03-01 17:03:45,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:03:45,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438817181] [2022-03-01 17:03:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:03:45,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:03:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:03:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:03:45,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:03:45,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438817181] [2022-03-01 17:03:45,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438817181] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:03:45,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895431655] [2022-03-01 17:03:45,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:03:45,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:03:45,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:03:45,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 17:03:45,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 17:03:45,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:03:45,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:03:45,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 17:03:45,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:03:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:03:45,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:03:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:03:45,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895431655] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:03:45,936 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:03:45,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-03-01 17:03:45,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018685138] [2022-03-01 17:03:45,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:03:45,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 17:03:45,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:03:45,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 17:03:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:03:45,943 INFO L87 Difference]: Start difference. First operand 149 states and 268 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:03:46,037 INFO L93 Difference]: Finished difference Result 181 states and 328 transitions. [2022-03-01 17:03:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:03:46,038 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) Word has length 29 [2022-03-01 17:03:46,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:03:46,048 INFO L225 Difference]: With dead ends: 181 [2022-03-01 17:03:46,048 INFO L226 Difference]: Without dead ends: 181 [2022-03-01 17:03:46,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:03:46,051 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 174 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:03:46,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 173 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:03:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-03-01 17:03:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-03-01 17:03:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.8222222222222222) internal successors, (328), 180 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 328 transitions. [2022-03-01 17:03:46,065 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 328 transitions. Word has length 29 [2022-03-01 17:03:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:03:46,065 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 328 transitions. [2022-03-01 17:03:46,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:03:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 328 transitions. [2022-03-01 17:03:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-01 17:03:46,066 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:03:46,066 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:03:46,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 17:03:46,283 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,SelfDestructingSolverStorable3 [2022-03-01 17:03:46,283 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-03-01 17:03:46,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:03:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1757553104, now seen corresponding path program 3 times [2022-03-01 17:03:46,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:03:46,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750154979] [2022-03-01 17:03:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:03:46,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:03:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 17:03:46,296 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-01 17:03:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 17:03:46,322 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-01 17:03:46,323 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-01 17:03:46,323 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location worker_threadErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-01 17:03:46,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location worker_threadErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-03-01 17:03:46,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 17:03:46,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 17:03:46,327 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-03-01 17:03:46,330 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 17:03:46,330 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 17:03:46,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 05:03:46 BasicIcfg [2022-03-01 17:03:46,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 17:03:46,357 INFO L158 Benchmark]: Toolchain (without parser) took 2305.38ms. Allocated memory was 200.3MB in the beginning and 241.2MB in the end (delta: 40.9MB). Free memory was 147.8MB in the beginning and 173.8MB in the end (delta: -26.1MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. [2022-03-01 17:03:46,357 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 165.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:03:46,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.26ms. Allocated memory is still 200.3MB. Free memory was 147.6MB in the beginning and 174.6MB in the end (delta: -27.0MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. [2022-03-01 17:03:46,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.86ms. Allocated memory is still 200.3MB. Free memory was 174.6MB in the beginning and 173.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 17:03:46,358 INFO L158 Benchmark]: Boogie Preprocessor took 20.11ms. Allocated memory is still 200.3MB. Free memory was 173.5MB in the beginning and 172.4MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 17:03:46,358 INFO L158 Benchmark]: RCFGBuilder took 220.80ms. Allocated memory is still 200.3MB. Free memory was 172.4MB in the beginning and 163.5MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-01 17:03:46,358 INFO L158 Benchmark]: TraceAbstraction took 1831.55ms. Allocated memory was 200.3MB in the beginning and 241.2MB in the end (delta: 40.9MB). Free memory was 162.8MB in the beginning and 173.8MB in the end (delta: -11.0MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-03-01 17:03:46,359 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 200.3MB. Free memory is still 165.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.26ms. Allocated memory is still 200.3MB. Free memory was 147.6MB in the beginning and 174.6MB in the end (delta: -27.0MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.86ms. Allocated memory is still 200.3MB. Free memory was 174.6MB in the beginning and 173.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.11ms. Allocated memory is still 200.3MB. Free memory was 173.5MB in the beginning and 172.4MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 220.80ms. Allocated memory is still 200.3MB. Free memory was 172.4MB in the beginning and 163.5MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1831.55ms. Allocated memory was 200.3MB in the beginning and 241.2MB in the end (delta: 40.9MB). Free memory was 162.8MB in the beginning and 173.8MB in the end (delta: -11.0MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * 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: 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: 1.7s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 446 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 311 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 135 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181occurred in iteration=4, 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 286 SizeOfPredicates, 8 NumberOfNonLiveVariables, 124 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! [2022-03-01 17:03:46,381 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...