/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-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 15:40:39,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 15:40:39,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 15:40:40,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 15:40:40,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 15:40:40,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 15:40:40,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 15:40:40,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 15:40:40,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 15:40:40,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 15:40:40,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 15:40:40,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 15:40:40,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 15:40:40,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 15:40:40,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 15:40:40,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 15:40:40,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 15:40:40,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 15:40:40,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 15:40:40,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 15:40:40,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 15:40:40,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 15:40:40,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 15:40:40,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 15:40:40,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 15:40:40,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 15:40:40,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 15:40:40,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 15:40:40,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 15:40:40,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 15:40:40,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 15:40:40,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 15:40:40,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 15:40:40,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 15:40:40,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 15:40:40,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 15:40:40,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 15:40:40,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 15:40:40,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 15:40:40,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 15:40:40,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 15:40:40,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 15:40:40,095 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 15:40:40,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 15:40:40,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 15:40:40,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 15:40:40,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 15:40:40,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 15:40:40,099 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 15:40:40,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 15:40:40,099 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 15:40:40,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 15:40:40,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 15:40:40,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 15:40:40,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 15:40:40,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 15:40:40,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 15:40:40,101 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 15:40:40,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 15:40:40,101 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 15:40:40,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 15:40:40,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 15:40:40,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 15:40:40,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 15:40:40,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 15:40:40,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:40:40,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 15:40:40,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 15:40:40,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 15:40:40,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 15:40:40,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 15:40:40,103 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 15:40:40,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 15:40:40,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 15:40:40,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 15:40:40,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 15:40:40,432 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 15:40:40,432 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 15:40:40,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2022-12-12 15:40:41,540 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 15:40:41,721 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 15:40:41,721 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2022-12-12 15:40:41,727 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7317101b8/2121e66d183f44c68d7048a955d403fb/FLAG63d3ecb05 [2022-12-12 15:40:41,737 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7317101b8/2121e66d183f44c68d7048a955d403fb [2022-12-12 15:40:41,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 15:40:41,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 15:40:41,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 15:40:41,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 15:40:41,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 15:40:41,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4b708c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41, skipping insertion in model container [2022-12-12 15:40:41,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 15:40:41,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 15:40:41,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,900 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-12-12 15:40:41,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:40:41,911 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 15:40:41,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,931 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-12-12 15:40:41,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:40:41,944 INFO L208 MainTranslator]: Completed translation [2022-12-12 15:40:41,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41 WrapperNode [2022-12-12 15:40:41,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 15:40:41,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 15:40:41,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 15:40:41,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 15:40:41,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,976 INFO L138 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 118 [2022-12-12 15:40:41,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 15:40:41,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 15:40:41,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 15:40:41,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 15:40:41,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 15:40:41,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 15:40:41,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 15:40:41,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 15:40:41,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:42,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:40:42,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:40:42,032 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) [2022-12-12 15:40:42,047 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 [2022-12-12 15:40:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 15:40:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 15:40:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 15:40:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 15:40:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 15:40:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 15:40:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 15:40:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 15:40:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 15:40:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 15:40:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 15:40:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 15:40:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 15:40:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 15:40:42,069 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 15:40:42,157 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 15:40:42,159 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 15:40:42,397 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 15:40:42,464 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 15:40:42,465 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 15:40:42,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:40:42 BoogieIcfgContainer [2022-12-12 15:40:42,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 15:40:42,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 15:40:42,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 15:40:42,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 15:40:42,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 03:40:41" (1/3) ... [2022-12-12 15:40:42,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce236b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:40:42, skipping insertion in model container [2022-12-12 15:40:42,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (2/3) ... [2022-12-12 15:40:42,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce236b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:40:42, skipping insertion in model container [2022-12-12 15:40:42,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:40:42" (3/3) ... [2022-12-12 15:40:42,474 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2022-12-12 15:40:42,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 15:40:42,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 15:40:42,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 15:40:42,563 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 15:40:42,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 89 transitions, 194 flow [2022-12-12 15:40:42,679 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2022-12-12 15:40:42,679 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 15:40:42,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 2/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-12-12 15:40:42,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 89 transitions, 194 flow [2022-12-12 15:40:42,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 79 transitions, 170 flow [2022-12-12 15:40:42,690 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 15:40:42,714 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 79 transitions, 170 flow [2022-12-12 15:40:42,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 170 flow [2022-12-12 15:40:42,764 INFO L130 PetriNetUnfolder]: 2/79 cut-off events. [2022-12-12 15:40:42,765 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 15:40:42,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 2/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-12-12 15:40:42,769 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 79 transitions, 170 flow [2022-12-12 15:40:42,769 INFO L226 LiptonReduction]: Number of co-enabled transitions 282 [2022-12-12 15:40:46,477 INFO L241 LiptonReduction]: Total number of compositions: 65 [2022-12-12 15:40:46,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 15:40:46,496 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@170e2019, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 15:40:46,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 15:40:46,507 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-12 15:40:46,507 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 15:40:46,507 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:40:46,508 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:40:46,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 15:40:46,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:40:46,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1455503599, now seen corresponding path program 1 times [2022-12-12 15:40:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:40:46,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633791484] [2022-12-12 15:40:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:40:46,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:40:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:40:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:40:47,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:40:47,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633791484] [2022-12-12 15:40:47,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633791484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:40:47,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:40:47,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 15:40:47,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950427522] [2022-12-12 15:40:47,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:40:47,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 15:40:47,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:40:47,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 15:40:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 15:40:47,268 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 15:40:47,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 40 flow. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-12 15:40:47,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:40:47,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 15:40:47,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:40:47,365 INFO L130 PetriNetUnfolder]: 33/81 cut-off events. [2022-12-12 15:40:47,365 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-12 15:40:47,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 81 events. 33/81 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 206 event pairs, 11 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 136. Up to 45 conditions per place. [2022-12-12 15:40:47,368 INFO L137 encePairwiseOnDemand]: 9/14 looper letters, 16 selfloop transitions, 2 changer transitions 9/27 dead transitions. [2022-12-12 15:40:47,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 129 flow [2022-12-12 15:40:47,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:40:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:40:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2022-12-12 15:40:47,382 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-12 15:40:47,387 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 40 flow. Second operand 5 states and 28 transitions. [2022-12-12 15:40:47,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 129 flow [2022-12-12 15:40:47,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 27 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-12 15:40:47,395 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 44 flow [2022-12-12 15:40:47,396 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=44, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2022-12-12 15:40:47,399 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2022-12-12 15:40:47,399 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 44 flow [2022-12-12 15:40:47,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-12 15:40:47,400 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:40:47,400 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:40:47,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 15:40:47,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 15:40:47,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:40:47,401 INFO L85 PathProgramCache]: Analyzing trace with hash -95863757, now seen corresponding path program 2 times [2022-12-12 15:40:47,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:40:47,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080137073] [2022-12-12 15:40:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:40:47,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:40:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:40:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:40:47,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:40:47,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080137073] [2022-12-12 15:40:47,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080137073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:40:47,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:40:47,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:40:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283353349] [2022-12-12 15:40:47,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:40:47,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:40:47,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:40:47,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:40:47,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:40:47,566 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 15:40:47,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 44 flow. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-12 15:40:47,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:40:47,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 15:40:47,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:40:47,650 INFO L130 PetriNetUnfolder]: 26/68 cut-off events. [2022-12-12 15:40:47,650 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-12 15:40:47,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 68 events. 26/68 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 15 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 166. Up to 38 conditions per place. [2022-12-12 15:40:47,652 INFO L137 encePairwiseOnDemand]: 9/14 looper letters, 16 selfloop transitions, 3 changer transitions 8/27 dead transitions. [2022-12-12 15:40:47,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 132 flow [2022-12-12 15:40:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:40:47,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:40:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2022-12-12 15:40:47,654 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-12 15:40:47,654 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 44 flow. Second operand 5 states and 28 transitions. [2022-12-12 15:40:47,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 132 flow [2022-12-12 15:40:47,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 27 transitions, 122 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-12 15:40:47,658 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 48 flow [2022-12-12 15:40:47,658 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=48, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2022-12-12 15:40:47,659 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2022-12-12 15:40:47,659 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 48 flow [2022-12-12 15:40:47,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-12 15:40:47,659 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:40:47,659 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:40:47,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 15:40:47,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 15:40:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:40:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash 790716403, now seen corresponding path program 3 times [2022-12-12 15:40:47,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:40:47,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661641724] [2022-12-12 15:40:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:40:47,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:40:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:40:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:40:47,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:40:47,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661641724] [2022-12-12 15:40:47,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661641724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:40:47,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:40:47,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 15:40:47,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665241562] [2022-12-12 15:40:47,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:40:47,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:40:47,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:40:47,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:40:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:40:47,832 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 15:40:47,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 48 flow. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-12-12 15:40:47,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:40:47,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 15:40:47,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:40:47,903 INFO L130 PetriNetUnfolder]: 15/46 cut-off events. [2022-12-12 15:40:47,904 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-12 15:40:47,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 46 events. 15/46 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 119. Up to 20 conditions per place. [2022-12-12 15:40:47,905 INFO L137 encePairwiseOnDemand]: 10/14 looper letters, 13 selfloop transitions, 2 changer transitions 8/23 dead transitions. [2022-12-12 15:40:47,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 121 flow [2022-12-12 15:40:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:40:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:40:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2022-12-12 15:40:47,906 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2022-12-12 15:40:47,906 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 48 flow. Second operand 5 states and 24 transitions. [2022-12-12 15:40:47,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 121 flow [2022-12-12 15:40:47,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 23 transitions, 105 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-12 15:40:47,908 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 46 flow [2022-12-12 15:40:47,909 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=46, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2022-12-12 15:40:47,910 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2022-12-12 15:40:47,910 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 46 flow [2022-12-12 15:40:47,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-12-12 15:40:47,910 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:40:47,910 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:40:47,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 15:40:47,911 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 15:40:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:40:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash -277331831, now seen corresponding path program 4 times [2022-12-12 15:40:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:40:47,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290793675] [2022-12-12 15:40:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:40:47,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:40:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:40:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:40:48,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:40:48,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290793675] [2022-12-12 15:40:48,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290793675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:40:48,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:40:48,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:40:48,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633863338] [2022-12-12 15:40:48,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:40:48,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:40:48,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:40:48,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:40:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:40:48,013 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-12 15:40:48,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-12 15:40:48,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:40:48,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-12 15:40:48,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:40:48,035 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-12-12 15:40:48,035 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 15:40:48,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 31. Up to 5 conditions per place. [2022-12-12 15:40:48,035 INFO L137 encePairwiseOnDemand]: 10/14 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2022-12-12 15:40:48,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 9 transitions, 46 flow [2022-12-12 15:40:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:40:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:40:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2022-12-12 15:40:48,036 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.14285714285714285 [2022-12-12 15:40:48,036 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 46 flow. Second operand 5 states and 10 transitions. [2022-12-12 15:40:48,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 9 transitions, 46 flow [2022-12-12 15:40:48,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 9 transitions, 42 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 15:40:48,037 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2022-12-12 15:40:48,037 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2022-12-12 15:40:48,037 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, -4 predicate places. [2022-12-12 15:40:48,038 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2022-12-12 15:40:48,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-12 15:40:48,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 15:40:48,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 15:40:48,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 15:40:48,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 15:40:48,041 INFO L445 BasicCegarLoop]: Path program histogram: [4] [2022-12-12 15:40:48,043 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 15:40:48,043 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 15:40:48,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 03:40:48 BasicIcfg [2022-12-12 15:40:48,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 15:40:48,046 INFO L158 Benchmark]: Toolchain (without parser) took 6305.62ms. Allocated memory was 188.7MB in the beginning and 232.8MB in the end (delta: 44.0MB). Free memory was 152.8MB in the beginning and 131.2MB in the end (delta: 21.6MB). Peak memory consumption was 66.6MB. Max. memory is 8.0GB. [2022-12-12 15:40:48,047 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 166.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 15:40:48,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.05ms. Allocated memory is still 188.7MB. Free memory was 152.8MB in the beginning and 140.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 15:40:48,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.91ms. Allocated memory is still 188.7MB. Free memory was 140.2MB in the beginning and 138.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 15:40:48,047 INFO L158 Benchmark]: Boogie Preprocessor took 20.39ms. Allocated memory is still 188.7MB. Free memory was 138.1MB in the beginning and 137.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 15:40:48,048 INFO L158 Benchmark]: RCFGBuilder took 469.37ms. Allocated memory is still 188.7MB. Free memory was 137.0MB in the beginning and 120.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-12 15:40:48,048 INFO L158 Benchmark]: TraceAbstraction took 5576.67ms. Allocated memory was 188.7MB in the beginning and 232.8MB in the end (delta: 44.0MB). Free memory was 119.2MB in the beginning and 131.2MB in the end (delta: -12.0MB). Peak memory consumption was 33.1MB. Max. memory is 8.0GB. [2022-12-12 15:40:48,050 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 166.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 203.05ms. Allocated memory is still 188.7MB. Free memory was 152.8MB in the beginning and 140.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.91ms. Allocated memory is still 188.7MB. Free memory was 140.2MB in the beginning and 138.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.39ms. Allocated memory is still 188.7MB. Free memory was 138.1MB in the beginning and 137.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 469.37ms. Allocated memory is still 188.7MB. Free memory was 137.0MB in the beginning and 120.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 5576.67ms. Allocated memory was 188.7MB in the beginning and 232.8MB in the end (delta: 44.0MB). Free memory was 119.2MB in the beginning and 131.2MB in the end (delta: -12.0MB). Peak memory consumption was 33.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 84 PlacesBefore, 21 PlacesAfterwards, 79 TransitionsBefore, 14 TransitionsAfterwards, 282 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 48 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 65 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 208, independent: 191, independent conditional: 191, independent unconditional: 0, dependent: 17, dependent conditional: 17, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 208, independent: 191, independent conditional: 0, independent unconditional: 191, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 208, independent: 191, independent conditional: 0, independent unconditional: 191, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 208, independent: 191, independent conditional: 0, independent unconditional: 191, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 191, independent: 177, independent conditional: 0, independent unconditional: 177, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 191, independent: 169, independent conditional: 0, independent unconditional: 169, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 91, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 208, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 191, unknown conditional: 0, unknown unconditional: 191] , Statistics on independence cache: Total cache size (in pairs): 280, Positive cache size: 266, Positive conditional cache size: 0, Positive unconditional cache size: 266, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 102]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 105 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 183 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 15:40:48,071 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...