/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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_unsafe-7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 20:36:18,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 20:36:18,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 20:36:18,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 20:36:18,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 20:36:18,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 20:36:18,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 20:36:18,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 20:36:18,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 20:36:18,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 20:36:18,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 20:36:18,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 20:36:18,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 20:36:18,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 20:36:18,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 20:36:18,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 20:36:18,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 20:36:18,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 20:36:18,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 20:36:19,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 20:36:19,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 20:36:19,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 20:36:19,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 20:36:19,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 20:36:19,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 20:36:19,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 20:36:19,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 20:36:19,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 20:36:19,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 20:36:19,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 20:36:19,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 20:36:19,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 20:36:19,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 20:36:19,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 20:36:19,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 20:36:19,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 20:36:19,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 20:36:19,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 20:36:19,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 20:36:19,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 20:36:19,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 20:36:19,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 20:36:19,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 20:36:19,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 20:36:19,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 20:36:19,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 20:36:19,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 20:36:19,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 20:36:19,042 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 20:36:19,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 20:36:19,043 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 20:36:19,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 20:36:19,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 20:36:19,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 20:36:19,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 20:36:19,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 20:36:19,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 20:36:19,044 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 20:36:19,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 20:36:19,044 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 20:36:19,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 20:36:19,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 20:36:19,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 20:36:19,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 20:36:19,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 20:36:19,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:36:19,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 20:36:19,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 20:36:19,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 20:36:19,045 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 20:36:19,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 20:36:19,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 20:36:19,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 20:36:19,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 20:36:19,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 20:36:19,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 20:36:19,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 20:36:19,327 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 20:36:19,327 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 20:36:19,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-7.i [2022-12-11 20:36:20,259 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 20:36:20,487 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 20:36:20,488 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-7.i [2022-12-11 20:36:20,502 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a54675434/bd30501502644e839e8bdcb0f5799ae2/FLAG7c503ca5f [2022-12-11 20:36:20,516 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a54675434/bd30501502644e839e8bdcb0f5799ae2 [2022-12-11 20:36:20,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 20:36:20,519 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 20:36:20,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 20:36:20,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 20:36:20,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 20:36:20,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a1183f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20, skipping insertion in model container [2022-12-11 20:36:20,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 20:36:20,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 20:36:20,805 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-7.i[30243,30256] [2022-12-11 20:36:20,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:20,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:20,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:20,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:20,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:20,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:20,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:20,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:20,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:20,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:20,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:36:20,833 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 20:36:20,866 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-7.i[30243,30256] [2022-12-11 20:36:20,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:20,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:20,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:20,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:20,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:20,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:20,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:20,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:20,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:20,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:20,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:36:20,901 INFO L208 MainTranslator]: Completed translation [2022-12-11 20:36:20,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20 WrapperNode [2022-12-11 20:36:20,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 20:36:20,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 20:36:20,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 20:36:20,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 20:36:20,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,934 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-12-11 20:36:20,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 20:36:20,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 20:36:20,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 20:36:20,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 20:36:20,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,967 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 20:36:20,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 20:36:20,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 20:36:20,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 20:36:20,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:36:20,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:21,008 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) [2022-12-11 20:36:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-11 20:36:21,047 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-11 20:36:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-11 20:36:21,047 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-11 20:36:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 20:36:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 20:36:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 20:36:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 20:36:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 20:36:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 20:36:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 20:36:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 20:36:21,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 20:36:21,048 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 20:36:21,032 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 [2022-12-11 20:36:21,132 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 20:36:21,133 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 20:36:21,292 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 20:36:21,296 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 20:36:21,296 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-11 20:36:21,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:36:21 BoogieIcfgContainer [2022-12-11 20:36:21,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 20:36:21,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 20:36:21,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 20:36:21,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 20:36:21,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 08:36:20" (1/3) ... [2022-12-11 20:36:21,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568e94a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:36:21, skipping insertion in model container [2022-12-11 20:36:21,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20" (2/3) ... [2022-12-11 20:36:21,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568e94a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:36:21, skipping insertion in model container [2022-12-11 20:36:21,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:36:21" (3/3) ... [2022-12-11 20:36:21,303 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-7.i [2022-12-11 20:36:21,317 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 20:36:21,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 20:36:21,317 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 20:36:21,371 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 20:36:21,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 196 flow [2022-12-11 20:36:21,458 INFO L130 PetriNetUnfolder]: 7/91 cut-off events. [2022-12-11 20:36:21,458 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 20:36:21,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 91 events. 7/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-11 20:36:21,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 93 transitions, 196 flow [2022-12-11 20:36:21,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 188 flow [2022-12-11 20:36:21,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 20:36:21,487 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;@55c7e74d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 20:36:21,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 20:36:21,514 INFO L130 PetriNetUnfolder]: 6/81 cut-off events. [2022-12-11 20:36:21,514 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 20:36:21,515 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:21,515 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:21,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:21,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash 95801150, now seen corresponding path program 1 times [2022-12-11 20:36:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:21,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852058669] [2022-12-11 20:36:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:21,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:21,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:21,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852058669] [2022-12-11 20:36:21,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852058669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:36:21,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:36:21,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 20:36:21,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110202321] [2022-12-11 20:36:21,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:36:21,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:36:21,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:36:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 20:36:21,817 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 93 [2022-12-11 20:36:21,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2022-12-11 20:36:21,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:21,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 93 [2022-12-11 20:36:21,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:36:21,849 INFO L130 PetriNetUnfolder]: 3/92 cut-off events. [2022-12-11 20:36:21,849 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:36:21,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 92 events. 3/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 18/106 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2022-12-11 20:36:21,850 INFO L137 encePairwiseOnDemand]: 86/93 looper letters, 9 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-12-11 20:36:21,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 206 flow [2022-12-11 20:36:21,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:36:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:36:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2022-12-11 20:36:21,859 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9283154121863799 [2022-12-11 20:36:21,862 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2022-12-11 20:36:21,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 89 transitions, 206 flow [2022-12-11 20:36:21,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 89 transitions, 206 flow [2022-12-11 20:36:21,864 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 206 flow [2022-12-11 20:36:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2022-12-11 20:36:21,864 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:21,864 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:21,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 20:36:21,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:21,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1875915451, now seen corresponding path program 1 times [2022-12-11 20:36:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:21,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870495127] [2022-12-11 20:36:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:21,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:22,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:22,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870495127] [2022-12-11 20:36:22,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870495127] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:36:22,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335291838] [2022-12-11 20:36:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:22,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:22,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:22,017 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) [2022-12-11 20:36:22,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 20:36:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:22,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 20:36:22,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:36:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:22,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:36:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:22,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335291838] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:36:22,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:36:22,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-11 20:36:22,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915652876] [2022-12-11 20:36:22,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:36:22,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:36:22,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:22,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:36:22,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:36:22,279 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 20:36:22,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 206 flow. Second operand has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2022-12-11 20:36:22,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:22,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 20:36:22,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:36:22,372 INFO L130 PetriNetUnfolder]: 3/101 cut-off events. [2022-12-11 20:36:22,372 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-11 20:36:22,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 101 events. 3/101 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 105. Up to 10 conditions per place. [2022-12-11 20:36:22,377 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 10 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2022-12-11 20:36:22,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 95 transitions, 264 flow [2022-12-11 20:36:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:36:22,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:36:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 723 transitions. [2022-12-11 20:36:22,384 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8637992831541219 [2022-12-11 20:36:22,385 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 9 predicate places. [2022-12-11 20:36:22,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 95 transitions, 264 flow [2022-12-11 20:36:22,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 95 transitions, 264 flow [2022-12-11 20:36:22,389 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 264 flow [2022-12-11 20:36:22,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2022-12-11 20:36:22,390 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:22,390 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:22,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 20:36:22,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:22,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:22,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:22,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1869128357, now seen corresponding path program 2 times [2022-12-11 20:36:22,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:22,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804207891] [2022-12-11 20:36:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:22,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:22,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:22,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804207891] [2022-12-11 20:36:22,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804207891] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:36:22,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703192085] [2022-12-11 20:36:22,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 20:36:22,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:22,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:22,762 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) [2022-12-11 20:36:22,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 20:36:22,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 20:36:22,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:36:22,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-11 20:36:22,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:36:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:22,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:36:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:22,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703192085] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:36:22,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:36:22,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-11 20:36:22,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17150423] [2022-12-11 20:36:22,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:36:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-11 20:36:22,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-11 20:36:22,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-11 20:36:22,990 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 20:36:22,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 264 flow. Second operand has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 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) [2022-12-11 20:36:22,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:22,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 20:36:22,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:36:23,177 INFO L130 PetriNetUnfolder]: 3/129 cut-off events. [2022-12-11 20:36:23,177 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-11 20:36:23,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 129 events. 3/129 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 194. Up to 22 conditions per place. [2022-12-11 20:36:23,179 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 14 selfloop transitions, 21 changer transitions 0/111 dead transitions. [2022-12-11 20:36:23,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 422 flow [2022-12-11 20:36:23,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-11 20:36:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-11 20:36:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1677 transitions. [2022-12-11 20:36:23,182 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.858678955453149 [2022-12-11 20:36:23,182 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2022-12-11 20:36:23,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 111 transitions, 422 flow [2022-12-11 20:36:23,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 111 transitions, 422 flow [2022-12-11 20:36:23,184 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 422 flow [2022-12-11 20:36:23,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 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) [2022-12-11 20:36:23,185 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:23,185 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:23,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-11 20:36:23,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-11 20:36:23,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:23,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:23,391 INFO L85 PathProgramCache]: Analyzing trace with hash 526543515, now seen corresponding path program 3 times [2022-12-11 20:36:23,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:23,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396715992] [2022-12-11 20:36:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:23,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:23,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:23,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396715992] [2022-12-11 20:36:23,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396715992] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:36:23,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230980792] [2022-12-11 20:36:23,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 20:36:23,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:23,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:23,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:36:23,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 20:36:23,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-11 20:36:23,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:36:23,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-11 20:36:23,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:36:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:23,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:36:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:24,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230980792] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:36:24,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:36:24,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-12-11 20:36:24,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159486805] [2022-12-11 20:36:24,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:36:24,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-11 20:36:24,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:24,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-11 20:36:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-12-11 20:36:24,094 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 20:36:24,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 422 flow. Second operand has 34 states, 34 states have (on average 80.0) internal successors, (2720), 34 states have internal predecessors, (2720), 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) [2022-12-11 20:36:24,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:24,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 20:36:24,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:36:24,513 INFO L130 PetriNetUnfolder]: 3/185 cut-off events. [2022-12-11 20:36:24,514 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2022-12-11 20:36:24,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 185 events. 3/185 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 403. Up to 46 conditions per place. [2022-12-11 20:36:24,515 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 22 selfloop transitions, 45 changer transitions 0/143 dead transitions. [2022-12-11 20:36:24,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 143 transitions, 796 flow [2022-12-11 20:36:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-11 20:36:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-11 20:36:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3585 transitions. [2022-12-11 20:36:24,522 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8566308243727598 [2022-12-11 20:36:24,522 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 73 predicate places. [2022-12-11 20:36:24,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 143 transitions, 796 flow [2022-12-11 20:36:24,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 143 transitions, 796 flow [2022-12-11 20:36:24,524 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 143 transitions, 796 flow [2022-12-11 20:36:24,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 80.0) internal successors, (2720), 34 states have internal predecessors, (2720), 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) [2022-12-11 20:36:24,525 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:24,525 INFO L214 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:24,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 20:36:24,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:24,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash -578591461, now seen corresponding path program 4 times [2022-12-11 20:36:24,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:24,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145934772] [2022-12-11 20:36:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:24,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:25,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:25,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145934772] [2022-12-11 20:36:25,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145934772] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:36:25,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027530587] [2022-12-11 20:36:25,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 20:36:25,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:25,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:25,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:36:25,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 20:36:25,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 20:36:25,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:36:25,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-11 20:36:25,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:36:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:25,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:36:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:25,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027530587] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:36:25,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:36:25,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 35 [2022-12-11 20:36:25,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461520732] [2022-12-11 20:36:25,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:36:25,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-11 20:36:25,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-11 20:36:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2022-12-11 20:36:25,995 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 20:36:25,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 143 transitions, 796 flow. Second operand has 35 states, 35 states have (on average 80.0) internal successors, (2800), 35 states have internal predecessors, (2800), 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) [2022-12-11 20:36:25,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:25,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 20:36:25,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:36:26,471 INFO L130 PetriNetUnfolder]: 3/192 cut-off events. [2022-12-11 20:36:26,471 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2022-12-11 20:36:26,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 192 events. 3/192 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 494. Up to 49 conditions per place. [2022-12-11 20:36:26,473 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 23 selfloop transitions, 48 changer transitions 0/147 dead transitions. [2022-12-11 20:36:26,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 147 transitions, 976 flow [2022-12-11 20:36:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-11 20:36:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-11 20:36:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3816 transitions. [2022-12-11 20:36:26,480 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8548387096774194 [2022-12-11 20:36:26,482 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 120 predicate places. [2022-12-11 20:36:26,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 147 transitions, 976 flow [2022-12-11 20:36:26,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 147 transitions, 976 flow [2022-12-11 20:36:26,484 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 147 transitions, 976 flow [2022-12-11 20:36:26,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 80.0) internal successors, (2800), 35 states have internal predecessors, (2800), 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) [2022-12-11 20:36:26,485 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:26,485 INFO L214 CegarLoopForPetriNet]: trace histogram [16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:26,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-11 20:36:26,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:26,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:26,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1675934270, now seen corresponding path program 5 times [2022-12-11 20:36:26,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:26,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333559396] [2022-12-11 20:36:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:26,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:28,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:28,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333559396] [2022-12-11 20:36:28,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333559396] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:36:28,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820126333] [2022-12-11 20:36:28,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 20:36:28,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:28,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:28,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:36:28,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 20:36:28,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-12-11 20:36:28,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:36:28,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-11 20:36:28,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:36:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 665 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:32,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:36:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:36,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820126333] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:36:36,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:36:36,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 163 [2022-12-11 20:36:36,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517008809] [2022-12-11 20:36:36,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:36:36,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-12-11 20:36:36,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:36,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-12-11 20:36:36,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1548, Invalid=24858, Unknown=0, NotChecked=0, Total=26406 [2022-12-11 20:36:36,999 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 93 [2022-12-11 20:36:37,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 147 transitions, 976 flow. Second operand has 163 states, 163 states have (on average 62.214723926380366) internal successors, (10141), 163 states have internal predecessors, (10141), 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) [2022-12-11 20:36:37,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:37,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 93 [2022-12-11 20:36:37,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:41:44,982 INFO L130 PetriNetUnfolder]: 51055/197529 cut-off events. [2022-12-11 20:41:44,982 INFO L131 PetriNetUnfolder]: For 19976/19976 co-relation queries the response was YES. [2022-12-11 20:41:45,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312710 conditions, 197529 events. 51055/197529 cut-off events. For 19976/19976 co-relation queries the response was YES. Maximal size of possible extension queue 2627. Compared 3034291 event pairs, 0 based on Foata normal form. 0/181040 useless extension candidates. Maximal degree in co-relation 312652. Up to 25763 conditions per place. [2022-12-11 20:41:46,178 INFO L137 encePairwiseOnDemand]: 76/93 looper letters, 1857 selfloop transitions, 2751 changer transitions 1501/6222 dead transitions. [2022-12-11 20:41:46,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1476 places, 6222 transitions, 25434 flow [2022-12-11 20:41:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1266 states. [2022-12-11 20:41:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2022-12-11 20:41:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 83458 transitions. [2022-12-11 20:41:46,441 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7088450627664815 [2022-12-11 20:41:46,444 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 1385 predicate places. [2022-12-11 20:41:46,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 1476 places, 6222 transitions, 25434 flow [2022-12-11 20:41:46,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1078 places, 4721 transitions, 19444 flow [2022-12-11 20:41:46,919 INFO L495 AbstractCegarLoop]: Abstraction has has 1078 places, 4721 transitions, 19444 flow [2022-12-11 20:41:46,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 62.214723926380366) internal successors, (10141), 163 states have internal predecessors, (10141), 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) [2022-12-11 20:41:46,922 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:41:46,922 INFO L214 CegarLoopForPetriNet]: trace histogram [16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:41:46,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-11 20:41:47,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:41:47,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:41:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:41:47,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1877850484, now seen corresponding path program 1 times [2022-12-11 20:41:47,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:41:47,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848813962] [2022-12-11 20:41:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:41:47,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:41:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:41:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:41:49,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:41:49,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848813962] [2022-12-11 20:41:49,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848813962] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:41:49,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67190797] [2022-12-11 20:41:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:41:49,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:41:49,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:41:49,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:41:49,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 20:41:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:41:49,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-11 20:41:49,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:41:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 651 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:41:53,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:41:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:41:57,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67190797] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:41:57,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:41:57,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 171 [2022-12-11 20:41:57,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729032880] [2022-12-11 20:41:57,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:41:57,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2022-12-11 20:41:57,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:41:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2022-12-11 20:41:57,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1568, Invalid=27502, Unknown=0, NotChecked=0, Total=29070 [2022-12-11 20:41:57,841 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 93 [2022-12-11 20:41:57,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1078 places, 4721 transitions, 19444 flow. Second operand has 171 states, 171 states have (on average 62.21052631578947) internal successors, (10638), 171 states have internal predecessors, (10638), 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) [2022-12-11 20:41:57,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:41:57,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 93 [2022-12-11 20:41:57,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand