/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 13:57:38,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 13:57:38,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 13:57:38,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 13:57:38,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 13:57:38,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 13:57:38,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 13:57:38,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 13:57:38,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 13:57:38,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 13:57:38,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 13:57:38,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 13:57:38,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 13:57:38,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 13:57:38,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 13:57:38,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 13:57:38,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 13:57:38,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 13:57:38,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 13:57:38,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 13:57:38,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 13:57:38,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 13:57:38,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 13:57:38,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 13:57:38,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 13:57:38,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 13:57:38,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 13:57:38,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 13:57:38,155 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-Separate.epf [2022-01-18 13:57:38,168 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 13:57:38,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 13:57:38,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 13:57:38,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 13:57:38,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 13:57:38,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 13:57:38,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 13:57:38,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 13:57:38,170 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 13:57:38,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 13:57:38,170 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 13:57:38,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 13:57:38,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 13:57:38,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 13:57:38,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 13:57:38,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 13:57:38,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 13:57:38,171 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 13:57:38,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 13:57:38,171 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 13:57:38,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 13:57:38,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 13:57:38,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 13:57:38,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 13:57:38,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 13:57:38,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:57:38,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 13:57:38,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 13:57:38,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 13:57:38,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 13:57:38,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 13:57:38,199 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 13:57:38,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 13:57:38,199 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 13:57:38,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 13:57:38,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 13:57:38,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 13:57:38,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 13:57:38,428 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 13:57:38,429 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 13:57:38,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2022-01-18 13:57:38,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8594a1e/5892acfac083409195a6a9ec247a1e38/FLAG8f88dc68c [2022-01-18 13:57:38,803 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 13:57:38,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2022-01-18 13:57:38,803 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-01-18 13:57:38,803 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-01-18 13:57:38,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8594a1e/5892acfac083409195a6a9ec247a1e38/FLAG8f88dc68c [2022-01-18 13:57:38,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8594a1e/5892acfac083409195a6a9ec247a1e38 [2022-01-18 13:57:38,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 13:57:38,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 13:57:38,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 13:57:38,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 13:57:38,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 13:57:38,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:57:38" (1/1) ... [2022-01-18 13:57:38,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45949730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:38, skipping insertion in model container [2022-01-18 13:57:38,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:57:38" (1/1) ... [2022-01-18 13:57:38,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 13:57:38,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 13:57:38,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:57:38,996 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 13:57:39,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:57:39,011 INFO L208 MainTranslator]: Completed translation [2022-01-18 13:57:39,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39 WrapperNode [2022-01-18 13:57:39,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 13:57:39,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 13:57:39,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 13:57:39,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 13:57:39,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (1/1) ... [2022-01-18 13:57:39,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (1/1) ... [2022-01-18 13:57:39,028 INFO L137 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-01-18 13:57:39,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 13:57:39,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 13:57:39,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 13:57:39,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 13:57:39,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (1/1) ... [2022-01-18 13:57:39,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (1/1) ... [2022-01-18 13:57:39,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (1/1) ... [2022-01-18 13:57:39,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (1/1) ... [2022-01-18 13:57:39,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (1/1) ... [2022-01-18 13:57:39,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (1/1) ... [2022-01-18 13:57:39,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (1/1) ... [2022-01-18 13:57:39,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 13:57:39,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 13:57:39,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 13:57:39,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 13:57:39,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (1/1) ... [2022-01-18 13:57:39,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:57:39,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:57:39,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 13:57:39,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 13:57:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 13:57:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure worker_thread [2022-01-18 13:57:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_thread [2022-01-18 13:57:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 13:57:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 13:57:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 13:57:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 13:57:39,101 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 13:57:39,144 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 13:57:39,144 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 13:57:39,238 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 13:57:39,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 13:57:39,249 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-18 13:57:39,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:57:39 BoogieIcfgContainer [2022-01-18 13:57:39,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 13:57:39,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 13:57:39,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 13:57:39,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 13:57:39,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:57:38" (1/3) ... [2022-01-18 13:57:39,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adb1af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:57:39, skipping insertion in model container [2022-01-18 13:57:39,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:39" (2/3) ... [2022-01-18 13:57:39,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adb1af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:57:39, skipping insertion in model container [2022-01-18 13:57:39,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:57:39" (3/3) ... [2022-01-18 13:57:39,254 INFO L111 eAbstractionObserver]: Analyzing ICFG mainThreadTerminates.c [2022-01-18 13:57:39,257 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 13:57:39,257 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 13:57:39,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 13:57:39,257 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 13:57:39,284 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,284 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,284 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,284 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,285 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,285 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,285 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,285 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,285 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,285 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,285 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,286 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,286 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,286 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,287 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,287 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,287 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,287 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,287 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,287 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,287 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,287 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,288 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,288 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,289 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,290 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,290 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,290 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,290 WARN L322 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,290 WARN L322 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:57:39,298 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 13:57:39,337 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:57:39,344 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, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 13:57:39,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 13:57:39,353 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 32 transitions, 69 flow [2022-01-18 13:57:39,375 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) [2022-01-18 13:57:39,377 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) [2022-01-18 13:57:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 13:57:39,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:57:39,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:57:39,381 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 13:57:39,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:57:39,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1843131007, now seen corresponding path program 1 times [2022-01-18 13:57:39,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:57:39,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724240529] [2022-01-18 13:57:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:57:39,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:57:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:57:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:57:39,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:57:39,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724240529] [2022-01-18 13:57:39,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724240529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:57:39,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:57:39,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:57:39,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998357113] [2022-01-18 13:57:39,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:57:39,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 13:57:39,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:57:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 13:57:39,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 13:57:39,531 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) [2022-01-18 13:57:39,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:57:39,546 INFO L93 Difference]: Finished difference Result 77 states and 133 transitions. [2022-01-18 13:57:39,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 13:57:39,547 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 [2022-01-18 13:57:39,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:57:39,553 INFO L225 Difference]: With dead ends: 77 [2022-01-18 13:57:39,553 INFO L226 Difference]: Without dead ends: 77 [2022-01-18 13:57:39,555 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 [2022-01-18 13:57:39,559 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 [2022-01-18 13:57:39,560 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] [2022-01-18 13:57:39,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-01-18 13:57:39,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-01-18 13:57:39,589 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) [2022-01-18 13:57:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2022-01-18 13:57:39,594 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 17 [2022-01-18 13:57:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:57:39,594 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2022-01-18 13:57:39,596 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) [2022-01-18 13:57:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2022-01-18 13:57:39,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 13:57:39,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:57:39,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:57:39,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 13:57:39,598 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 13:57:39,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:57:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1843130976, now seen corresponding path program 1 times [2022-01-18 13:57:39,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:57:39,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137402556] [2022-01-18 13:57:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:57:39,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:57:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:57:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:57:39,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:57:39,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137402556] [2022-01-18 13:57:39,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137402556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:57:39,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:57:39,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:57:39,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145315428] [2022-01-18 13:57:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:57:39,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:57:39,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:57:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:57:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:57:39,650 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) [2022-01-18 13:57:39,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:57:39,667 INFO L93 Difference]: Finished difference Result 101 states and 178 transitions. [2022-01-18 13:57:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:57:39,667 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 [2022-01-18 13:57:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:57:39,668 INFO L225 Difference]: With dead ends: 101 [2022-01-18 13:57:39,668 INFO L226 Difference]: Without dead ends: 101 [2022-01-18 13:57:39,668 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 [2022-01-18 13:57:39,669 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 [2022-01-18 13:57:39,670 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] [2022-01-18 13:57:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-18 13:57:39,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 85. [2022-01-18 13:57:39,675 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) [2022-01-18 13:57:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 148 transitions. [2022-01-18 13:57:39,676 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 148 transitions. Word has length 17 [2022-01-18 13:57:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:57:39,676 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 148 transitions. [2022-01-18 13:57:39,676 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) [2022-01-18 13:57:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 148 transitions. [2022-01-18 13:57:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 13:57:39,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:57:39,677 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] [2022-01-18 13:57:39,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 13:57:39,677 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 13:57:39,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:57:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1575236412, now seen corresponding path program 1 times [2022-01-18 13:57:39,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:57:39,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386003210] [2022-01-18 13:57:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:57:39,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:57:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:57:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:57:39,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:57:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386003210] [2022-01-18 13:57:39,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386003210] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:57:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043851319] [2022-01-18 13:57:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:57:39,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:57:39,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:57:39,724 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) [2022-01-18 13:57:39,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 13:57:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:57:39,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 13:57:39,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:57:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:57:39,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:57:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:57:39,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043851319] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:57:39,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:57:39,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 13:57:39,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384386183] [2022-01-18 13:57:39,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:57:39,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 13:57:39,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:57:39,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 13:57:39,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 13:57:39,896 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) [2022-01-18 13:57:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:57:39,950 INFO L93 Difference]: Finished difference Result 149 states and 268 transitions. [2022-01-18 13:57:39,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 13:57:39,951 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 [2022-01-18 13:57:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:57:39,952 INFO L225 Difference]: With dead ends: 149 [2022-01-18 13:57:39,952 INFO L226 Difference]: Without dead ends: 149 [2022-01-18 13:57:39,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 13:57:39,953 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 [2022-01-18 13:57:39,953 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] [2022-01-18 13:57:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-01-18 13:57:39,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-01-18 13:57:39,961 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) [2022-01-18 13:57:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 268 transitions. [2022-01-18 13:57:39,962 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 268 transitions. Word has length 21 [2022-01-18 13:57:39,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:57:39,962 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 268 transitions. [2022-01-18 13:57:39,963 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) [2022-01-18 13:57:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 268 transitions. [2022-01-18 13:57:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 13:57:39,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:57:39,964 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] [2022-01-18 13:57:40,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 13:57:40,179 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 [2022-01-18 13:57:40,179 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 13:57:40,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:57:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1971303692, now seen corresponding path program 2 times [2022-01-18 13:57:40,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:57:40,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370443086] [2022-01-18 13:57:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:57:40,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:57:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:57:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:57:40,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:57:40,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370443086] [2022-01-18 13:57:40,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370443086] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:57:40,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748344642] [2022-01-18 13:57:40,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:57:40,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:57:40,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:57:40,281 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) [2022-01-18 13:57:40,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 13:57:40,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:57:40,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:57:40,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 13:57:40,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:57:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:57:40,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:57:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:57:40,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748344642] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:57:40,509 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:57:40,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-01-18 13:57:40,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373511094] [2022-01-18 13:57:40,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:57:40,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 13:57:40,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:57:40,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 13:57:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-01-18 13:57:40,513 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) [2022-01-18 13:57:40,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:57:40,595 INFO L93 Difference]: Finished difference Result 181 states and 328 transitions. [2022-01-18 13:57:40,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 13:57:40,598 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 [2022-01-18 13:57:40,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:57:40,603 INFO L225 Difference]: With dead ends: 181 [2022-01-18 13:57:40,603 INFO L226 Difference]: Without dead ends: 181 [2022-01-18 13:57:40,603 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 [2022-01-18 13:57:40,604 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 [2022-01-18 13:57:40,604 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] [2022-01-18 13:57:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-01-18 13:57:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-01-18 13:57:40,622 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) [2022-01-18 13:57:40,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 328 transitions. [2022-01-18 13:57:40,623 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 328 transitions. Word has length 29 [2022-01-18 13:57:40,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:57:40,624 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 328 transitions. [2022-01-18 13:57:40,624 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) [2022-01-18 13:57:40,624 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 328 transitions. [2022-01-18 13:57:40,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 13:57:40,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:57:40,625 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] [2022-01-18 13:57:40,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 13:57:40,826 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 [2022-01-18 13:57:40,826 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting worker_threadErr0ASSERT_VIOLATIONASSERT === [worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, worker_threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 13:57:40,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:57:40,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1757553104, now seen corresponding path program 3 times [2022-01-18 13:57:40,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:57:40,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233714595] [2022-01-18 13:57:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:57:40,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:57:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:57:40,846 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 13:57:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 13:57:40,895 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 13:57:40,895 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 13:57:40,896 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location worker_threadErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-01-18 13:57:40,897 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location worker_threadErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-01-18 13:57:40,897 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 13:57:40,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 13:57:40,899 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-01-18 13:57:40,903 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 13:57:40,903 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 13:57:40,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:57:40 BasicIcfg [2022-01-18 13:57:40,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 13:57:40,927 INFO L158 Benchmark]: Toolchain (without parser) took 2095.55ms. Allocated memory is still 429.9MB. Free memory was 376.9MB in the beginning and 298.1MB in the end (delta: 78.8MB). Peak memory consumption was 78.6MB. Max. memory is 16.0GB. [2022-01-18 13:57:40,927 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 429.9MB. Free memory was 394.6MB in the beginning and 394.5MB in the end (delta: 65.7kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:57:40,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.15ms. Allocated memory is still 429.9MB. Free memory was 376.7MB in the beginning and 397.7MB in the end (delta: -21.0MB). Peak memory consumption was 9.4MB. Max. memory is 16.0GB. [2022-01-18 13:57:40,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.56ms. Allocated memory is still 429.9MB. Free memory was 397.7MB in the beginning and 396.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:57:40,928 INFO L158 Benchmark]: Boogie Preprocessor took 15.26ms. Allocated memory is still 429.9MB. Free memory was 396.7MB in the beginning and 395.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:57:40,928 INFO L158 Benchmark]: RCFGBuilder took 205.27ms. Allocated memory is still 429.9MB. Free memory was 395.4MB in the beginning and 385.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2022-01-18 13:57:40,928 INFO L158 Benchmark]: TraceAbstraction took 1675.55ms. Allocated memory is still 429.9MB. Free memory was 385.1MB in the beginning and 298.1MB in the end (delta: 87.0MB). Peak memory consumption was 86.0MB. Max. memory is 16.0GB. [2022-01-18 13:57:40,929 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 429.9MB. Free memory was 394.6MB in the beginning and 394.5MB in the end (delta: 65.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 179.15ms. Allocated memory is still 429.9MB. Free memory was 376.7MB in the beginning and 397.7MB in the end (delta: -21.0MB). Peak memory consumption was 9.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 16.56ms. Allocated memory is still 429.9MB. Free memory was 397.7MB in the beginning and 396.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 15.26ms. Allocated memory is still 429.9MB. Free memory was 396.7MB in the beginning and 395.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 205.27ms. Allocated memory is still 429.9MB. Free memory was 395.4MB in the beginning and 385.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 1675.55ms. Allocated memory is still 429.9MB. Free memory was 385.1MB in the beginning and 298.1MB in the end (delta: 87.0MB). Peak memory consumption was 86.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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: 1.6s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, 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! [2022-01-18 13:57:40,967 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...