/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_safe-7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:01:05,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:01:05,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:01:05,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:01:05,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:01:05,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:01:05,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:01:05,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:01:05,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:01:05,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:01:05,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:01:05,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:01:05,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:01:05,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:01:05,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:01:05,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:01:05,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:01:05,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:01:05,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:01:05,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:01:05,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:01:05,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:01:05,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:01:05,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:01:05,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:01:05,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:01:05,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:01:05,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:01:05,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:01:05,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 16:01:05,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 16:01:05,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 16:01:05,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 16:01:05,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 16:01:05,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 16:01:05,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 16:01:05,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 16:01:05,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 16:01:05,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:01:05,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:01:05,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:01:05,432 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 [2022-12-06 16:01:05,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:01:05,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:01:05,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:01:05,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:01:05,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:01:05,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:01:05,458 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:01:05,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:01:05,458 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:01:05,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:01:05,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:01:05,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:01:05,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:01:05,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:01:05,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:01:05,459 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:01:05,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:01:05,459 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:01:05,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:01:05,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:01:05,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:01:05,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:01:05,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:01:05,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:01:05,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:01:05,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:01:05,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:01:05,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:01:05,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:01:05,461 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:01:05,461 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:01:05,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:01:05,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:01:05,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:01:05,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:01:05,819 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:01:05,820 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:01:05,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-7.i [2022-12-06 16:01:07,022 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:01:07,269 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:01:07,269 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-7.i [2022-12-06 16:01:07,279 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c60db1ed/454a57d8bf514ba5aeb5d6f3b4bf96e4/FLAGbd912fe69 [2022-12-06 16:01:07,289 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c60db1ed/454a57d8bf514ba5aeb5d6f3b4bf96e4 [2022-12-06 16:01:07,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:01:07,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:01:07,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:01:07,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:01:07,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:01:07,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b8e717b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07, skipping insertion in model container [2022-12-06 16:01:07,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:01:07,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:01:07,587 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_safe-7.i[30241,30254] [2022-12-06 16:01:07,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:01:07,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:01:07,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:01:07,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:01:07,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:01:07,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:01:07,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:01:07,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:01:07,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:01:07,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:01:07,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:01:07,623 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:01:07,662 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_safe-7.i[30241,30254] [2022-12-06 16:01:07,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:01:07,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:01:07,664 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:01:07,664 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:01:07,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:01:07,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:01:07,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:01:07,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:01:07,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:01:07,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:01:07,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:01:07,701 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:01:07,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07 WrapperNode [2022-12-06 16:01:07,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:01:07,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:01:07,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:01:07,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:01:07,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,741 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-12-06 16:01:07,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:01:07,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:01:07,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:01:07,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:01:07,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:01:07,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:01:07,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:01:07,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:01:07,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (1/1) ... [2022-12-06 16:01:07,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:01:07,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:01:07,796 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) [2022-12-06 16:01:07,819 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 [2022-12-06 16:01:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-06 16:01:07,844 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-06 16:01:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-06 16:01:07,844 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-06 16:01:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:01:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 16:01:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:01:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:01:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:01:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:01:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 16:01:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:01:07,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:01:07,847 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:01:08,026 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:01:08,031 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:01:08,187 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:01:08,193 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:01:08,193 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-06 16:01:08,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:01:08 BoogieIcfgContainer [2022-12-06 16:01:08,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:01:08,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:01:08,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:01:08,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:01:08,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:01:07" (1/3) ... [2022-12-06 16:01:08,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bbc66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:01:08, skipping insertion in model container [2022-12-06 16:01:08,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:01:07" (2/3) ... [2022-12-06 16:01:08,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bbc66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:01:08, skipping insertion in model container [2022-12-06 16:01:08,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:01:08" (3/3) ... [2022-12-06 16:01:08,203 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-7.i [2022-12-06 16:01:08,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:01:08,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:01:08,217 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:01:08,264 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-06 16:01:08,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 196 flow [2022-12-06 16:01:08,376 INFO L130 PetriNetUnfolder]: 7/91 cut-off events. [2022-12-06 16:01:08,376 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:01:08,381 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. [2022-12-06 16:01:08,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 93 transitions, 196 flow [2022-12-06 16:01:08,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 188 flow [2022-12-06 16:01:08,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:01:08,415 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;@4c17acc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:01:08,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 16:01:08,454 INFO L130 PetriNetUnfolder]: 6/81 cut-off events. [2022-12-06 16:01:08,454 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:01:08,454 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:01:08,455 INFO L213 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] [2022-12-06 16:01:08,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:01:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:01:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash 95801150, now seen corresponding path program 1 times [2022-12-06 16:01:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:01:08,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562671970] [2022-12-06 16:01:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:01:08,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:01:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:01:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:08,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:01:08,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562671970] [2022-12-06 16:01:08,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562671970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:01:08,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:01:08,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 16:01:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877531367] [2022-12-06 16:01:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:01:08,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 16:01:08,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:01:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 16:01:08,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 16:01:08,885 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 93 [2022-12-06 16:01:08,887 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) [2022-12-06 16:01:08,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:01:08,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 93 [2022-12-06 16:01:08,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:01:08,925 INFO L130 PetriNetUnfolder]: 3/92 cut-off events. [2022-12-06 16:01:08,925 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 16:01:08,926 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. [2022-12-06 16:01:08,928 INFO L137 encePairwiseOnDemand]: 86/93 looper letters, 9 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-12-06 16:01:08,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 206 flow [2022-12-06 16:01:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 16:01:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 16:01:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2022-12-06 16:01:08,950 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9283154121863799 [2022-12-06 16:01:08,955 INFO L294 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2022-12-06 16:01:08,956 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 206 flow [2022-12-06 16:01:08,957 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) [2022-12-06 16:01:08,957 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:01:08,957 INFO L213 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] [2022-12-06 16:01:08,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:01:08,958 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:01:08,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:01:08,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1875915451, now seen corresponding path program 1 times [2022-12-06 16:01:08,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:01:08,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416088362] [2022-12-06 16:01:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:01:08,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:01:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:01:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:09,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:01:09,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416088362] [2022-12-06 16:01:09,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416088362] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:01:09,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681818271] [2022-12-06 16:01:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:01:09,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:01:09,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:01:09,139 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) [2022-12-06 16:01:09,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 16:01:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:01:09,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-06 16:01:09,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:01:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:09,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:01:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:09,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681818271] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:01:09,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:01:09,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-06 16:01:09,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208308443] [2022-12-06 16:01:09,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:01:09,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-06 16:01:09,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:01:09,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-06 16:01:09,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-06 16:01:09,473 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-06 16:01:09,475 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) [2022-12-06 16:01:09,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:01:09,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-06 16:01:09,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:01:09,579 INFO L130 PetriNetUnfolder]: 3/101 cut-off events. [2022-12-06 16:01:09,579 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-06 16:01:09,584 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. [2022-12-06 16:01:09,586 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 10 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2022-12-06 16:01:09,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 95 transitions, 264 flow [2022-12-06 16:01:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:01:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:01:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 723 transitions. [2022-12-06 16:01:09,590 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8637992831541219 [2022-12-06 16:01:09,592 INFO L294 CegarLoopForPetriNet]: 91 programPoint places, 9 predicate places. [2022-12-06 16:01:09,592 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 264 flow [2022-12-06 16:01:09,593 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) [2022-12-06 16:01:09,593 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:01:09,593 INFO L213 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] [2022-12-06 16:01:09,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 16:01:09,799 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 [2022-12-06 16:01:09,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:01:09,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:01:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1869128357, now seen corresponding path program 2 times [2022-12-06 16:01:09,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:01:09,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144944522] [2022-12-06 16:01:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:01:09,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:01:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:01:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:10,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:01:10,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144944522] [2022-12-06 16:01:10,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144944522] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:01:10,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727977730] [2022-12-06 16:01:10,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 16:01:10,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:01:10,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:01:10,072 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) [2022-12-06 16:01:10,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 16:01:10,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 16:01:10,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:01:10,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 16:01:10,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:01:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:10,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:01:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:10,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727977730] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:01:10,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:01:10,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-06 16:01:10,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093577974] [2022-12-06 16:01:10,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:01:10,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-06 16:01:10,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:01:10,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-06 16:01:10,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-06 16:01:10,356 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-06 16:01:10,358 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) [2022-12-06 16:01:10,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:01:10,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-06 16:01:10,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:01:10,566 INFO L130 PetriNetUnfolder]: 3/129 cut-off events. [2022-12-06 16:01:10,566 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-06 16:01:10,567 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. [2022-12-06 16:01:10,568 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 14 selfloop transitions, 21 changer transitions 0/111 dead transitions. [2022-12-06 16:01:10,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 422 flow [2022-12-06 16:01:10,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-06 16:01:10,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-06 16:01:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1677 transitions. [2022-12-06 16:01:10,573 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.858678955453149 [2022-12-06 16:01:10,574 INFO L294 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2022-12-06 16:01:10,574 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 422 flow [2022-12-06 16:01:10,575 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) [2022-12-06 16:01:10,576 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:01:10,576 INFO L213 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] [2022-12-06 16:01:10,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 16:01:10,782 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 [2022-12-06 16:01:10,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:01:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:01:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash 526543515, now seen corresponding path program 3 times [2022-12-06 16:01:10,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:01:10,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998336952] [2022-12-06 16:01:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:01:10,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:01:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:01:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:01:11,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998336952] [2022-12-06 16:01:11,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998336952] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:01:11,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940728492] [2022-12-06 16:01:11,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 16:01:11,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:01:11,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:01:11,163 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) [2022-12-06 16:01:11,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 16:01:11,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-06 16:01:11,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:01:11,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-06 16:01:11,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:01:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:11,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:01:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:11,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940728492] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:01:11,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:01:11,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-12-06 16:01:11,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155117644] [2022-12-06 16:01:11,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:01:11,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-06 16:01:11,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:01:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-06 16:01:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-12-06 16:01:11,671 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-06 16:01:11,675 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) [2022-12-06 16:01:11,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:01:11,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-06 16:01:11,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:01:12,150 INFO L130 PetriNetUnfolder]: 3/185 cut-off events. [2022-12-06 16:01:12,151 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2022-12-06 16:01:12,152 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. [2022-12-06 16:01:12,154 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 22 selfloop transitions, 45 changer transitions 0/143 dead transitions. [2022-12-06 16:01:12,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 143 transitions, 796 flow [2022-12-06 16:01:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-06 16:01:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-06 16:01:12,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3585 transitions. [2022-12-06 16:01:12,163 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8566308243727598 [2022-12-06 16:01:12,164 INFO L294 CegarLoopForPetriNet]: 91 programPoint places, 73 predicate places. [2022-12-06 16:01:12,164 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 143 transitions, 796 flow [2022-12-06 16:01:12,166 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) [2022-12-06 16:01:12,166 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:01:12,166 INFO L213 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] [2022-12-06 16:01:12,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 16:01:12,372 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 [2022-12-06 16:01:12,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:01:12,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:01:12,373 INFO L85 PathProgramCache]: Analyzing trace with hash -578591461, now seen corresponding path program 4 times [2022-12-06 16:01:12,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:01:12,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443574861] [2022-12-06 16:01:12,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:01:12,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:01:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:01:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:13,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:01:13,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443574861] [2022-12-06 16:01:13,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443574861] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:01:13,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018305190] [2022-12-06 16:01:13,183 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 16:01:13,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:01:13,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:01:13,184 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) [2022-12-06 16:01:13,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 16:01:13,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 16:01:13,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:01:13,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-06 16:01:13,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:01:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:13,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:01:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:13,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018305190] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:01:13,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:01:13,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 35 [2022-12-06 16:01:13,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922672450] [2022-12-06 16:01:13,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:01:13,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-06 16:01:13,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:01:13,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-06 16:01:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2022-12-06 16:01:13,971 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-06 16:01:13,973 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) [2022-12-06 16:01:13,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:01:13,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-06 16:01:13,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:01:14,650 INFO L130 PetriNetUnfolder]: 3/192 cut-off events. [2022-12-06 16:01:14,650 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2022-12-06 16:01:14,652 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. [2022-12-06 16:01:14,652 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 23 selfloop transitions, 48 changer transitions 0/147 dead transitions. [2022-12-06 16:01:14,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 147 transitions, 976 flow [2022-12-06 16:01:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-06 16:01:14,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-06 16:01:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3816 transitions. [2022-12-06 16:01:14,660 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8548387096774194 [2022-12-06 16:01:14,661 INFO L294 CegarLoopForPetriNet]: 91 programPoint places, 120 predicate places. [2022-12-06 16:01:14,661 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 147 transitions, 976 flow [2022-12-06 16:01:14,662 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) [2022-12-06 16:01:14,662 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:01:14,662 INFO L213 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] [2022-12-06 16:01:14,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 16:01:14,863 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 [2022-12-06 16:01:14,863 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:01:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:01:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1675934270, now seen corresponding path program 5 times [2022-12-06 16:01:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:01:14,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37410987] [2022-12-06 16:01:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:01:14,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:01:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:01:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:17,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:01:17,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37410987] [2022-12-06 16:01:17,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37410987] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:01:17,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197303953] [2022-12-06 16:01:17,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 16:01:17,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:01:17,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:01:17,960 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) [2022-12-06 16:01:17,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 16:01:18,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-12-06 16:01:18,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:01:18,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-06 16:01:18,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:01:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 665 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:22,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:01:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:01:27,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197303953] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:01:27,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:01:27,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 163 [2022-12-06 16:01:27,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763059539] [2022-12-06 16:01:27,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:01:27,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-12-06 16:01:27,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:01:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-12-06 16:01:27,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1567, Invalid=24839, Unknown=0, NotChecked=0, Total=26406 [2022-12-06 16:01:27,446 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 93 [2022-12-06 16:01:27,455 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) [2022-12-06 16:01:27,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:01:27,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 93 [2022-12-06 16:01:27,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:06:57,089 INFO L130 PetriNetUnfolder]: 51434/202986 cut-off events. [2022-12-06 16:06:57,090 INFO L131 PetriNetUnfolder]: For 17736/17736 co-relation queries the response was YES. [2022-12-06 16:06:57,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314427 conditions, 202986 events. 51434/202986 cut-off events. For 17736/17736 co-relation queries the response was YES. Maximal size of possible extension queue 2656. Compared 3145842 event pairs, 0 based on Foata normal form. 0/185673 useless extension candidates. Maximal degree in co-relation 314369. Up to 25960 conditions per place. [2022-12-06 16:06:58,552 INFO L137 encePairwiseOnDemand]: 76/93 looper letters, 1859 selfloop transitions, 2773 changer transitions 1501/6246 dead transitions. [2022-12-06 16:06:58,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1486 places, 6246 transitions, 25530 flow [2022-12-06 16:06:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1276 states. [2022-12-06 16:06:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2022-12-06 16:06:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 84092 transitions. [2022-12-06 16:06:58,638 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7086324872754238 [2022-12-06 16:06:58,641 INFO L294 CegarLoopForPetriNet]: 91 programPoint places, 1395 predicate places. [2022-12-06 16:06:58,641 INFO L495 AbstractCegarLoop]: Abstraction has has 1486 places, 6246 transitions, 25530 flow [2022-12-06 16:06:58,645 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) [2022-12-06 16:06:58,645 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:06:58,645 INFO L213 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] [2022-12-06 16:06:58,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 16:06:58,851 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 [2022-12-06 16:06:58,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:06:58,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:06:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1298344714, now seen corresponding path program 1 times [2022-12-06 16:06:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:06:58,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790322758] [2022-12-06 16:06:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:06:58,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:06:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:07:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:07:01,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:07:01,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790322758] [2022-12-06 16:07:01,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790322758] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:07:01,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3504757] [2022-12-06 16:07:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:07:01,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:07:01,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:07:01,851 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) [2022-12-06 16:07:01,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 16:07:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:07:01,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-06 16:07:01,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:07:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 651 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:07:06,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:07:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:07:11,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3504757] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:07:11,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:07:11,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 171 [2022-12-06 16:07:11,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680206132] [2022-12-06 16:07:11,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:07:11,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2022-12-06 16:07:11,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:07:11,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2022-12-06 16:07:11,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1588, Invalid=27482, Unknown=0, NotChecked=0, Total=29070 [2022-12-06 16:07:11,371 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 93 [2022-12-06 16:07:11,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1486 places, 6246 transitions, 25530 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) [2022-12-06 16:07:11,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:07:11,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 93 [2022-12-06 16:07:11,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 16:13:19,979 WARN L249 SmtUtils]: Removed 29 from assertion stack [2022-12-06 16:13:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1043 states. [2022-12-06 16:13:19,981 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 16:13:19,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 16:13:19,987 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 16:13:19,987 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 16:13:20,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:13:20,183 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 138 for 42ms.. [2022-12-06 16:13:20,185 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 16:13:20,185 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 16:13:20,186 INFO L458 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2022-12-06 16:13:20,193 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:13:20,193 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:13:20,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:13:20 BasicIcfg [2022-12-06 16:13:20,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:13:20,208 INFO L158 Benchmark]: Toolchain (without parser) took 732915.10ms. Allocated memory was 178.3MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 153.1MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2022-12-06 16:13:20,208 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory was 107.4MB in the beginning and 107.3MB in the end (delta: 66.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:13:20,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.01ms. Allocated memory is still 178.3MB. Free memory was 152.7MB in the beginning and 132.4MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-06 16:13:20,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.84ms. Allocated memory is still 178.3MB. Free memory was 132.4MB in the beginning and 130.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:13:20,209 INFO L158 Benchmark]: Boogie Preprocessor took 23.27ms. Allocated memory is still 178.3MB. Free memory was 130.7MB in the beginning and 129.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 16:13:20,209 INFO L158 Benchmark]: RCFGBuilder took 429.63ms. Allocated memory is still 178.3MB. Free memory was 129.0MB in the beginning and 145.2MB in the end (delta: -16.3MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. [2022-12-06 16:13:20,210 INFO L158 Benchmark]: TraceAbstraction took 732010.46ms. Allocated memory was 178.3MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 144.7MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2022-12-06 16:13:20,211 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory was 107.4MB in the beginning and 107.3MB in the end (delta: 66.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 408.01ms. Allocated memory is still 178.3MB. Free memory was 152.7MB in the beginning and 132.4MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.84ms. Allocated memory is still 178.3MB. Free memory was 132.4MB in the beginning and 130.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.27ms. Allocated memory is still 178.3MB. Free memory was 130.7MB in the beginning and 129.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 429.63ms. Allocated memory is still 178.3MB. Free memory was 129.0MB in the beginning and 145.2MB in the end (delta: -16.3MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. * TraceAbstraction took 732010.46ms. Allocated memory was 178.3MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 144.7MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 138 for 42ms.. - TimeoutResultAtElement [Line: 720]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 138 for 42ms.. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 138 for 42ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 109 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: 731.9s, OverallIterations: 7, TraceHistogramMax: 16, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 701.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17944 SdHoareTripleChecker+Valid, 26.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17944 mSDsluCounter, 6750 SdHoareTripleChecker+Invalid, 22.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6701 mSDsCounter, 12881 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48338 IncrementalHoareTripleChecker+Invalid, 61219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12881 mSolverCounterUnsat, 49 mSDtfsCounter, 48338 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3964 GetRequests, 1156 SyntacticMatches, 35 SemanticMatches, 2772 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1567372 ImplicationChecksByTransitivity, 592.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25530occurred in iteration=6, InterpolantAutomatonStates: 1402, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 27.9s InterpolantComputationTime, 1491 NumberOfCodeBlocks, 1491 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2192 ConstructedInterpolants, 0 QuantifiedInterpolants, 16300 SizeOfPredicates, 160 NumberOfNonLiveVariables, 1560 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 1316/7923 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown