/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 14:42:57,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 14:42:57,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 14:42:57,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 14:42:57,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 14:42:57,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 14:42:57,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 14:42:57,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 14:42:57,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 14:42:57,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 14:42:57,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 14:42:57,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 14:42:57,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 14:42:57,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 14:42:57,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 14:42:57,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 14:42:57,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 14:42:57,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 14:42:57,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 14:42:57,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 14:42:57,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 14:42:57,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 14:42:57,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 14:42:57,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 14:42:57,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 14:42:57,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 14:42:57,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 14:42:57,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 14:42:57,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 14:42:57,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 14:42:57,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 14:42:57,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 14:42:57,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 14:42:57,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 14:42:57,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 14:42:57,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 14:42:57,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 14:42:57,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 14:42:57,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 14:42:57,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 14:42:57,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 14:42:57,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 14:42:57,727 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 14:42:57,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 14:42:57,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 14:42:57,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 14:42:57,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 14:42:57,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 14:42:57,730 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 14:42:57,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 14:42:57,730 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 14:42:57,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 14:42:57,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 14:42:57,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 14:42:57,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 14:42:57,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 14:42:57,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 14:42:57,731 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 14:42:57,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 14:42:57,732 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 14:42:57,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 14:42:57,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 14:42:57,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 14:42:57,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 14:42:57,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 14:42:57,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:42:57,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 14:42:57,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 14:42:57,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 14:42:57,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 14:42:57,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 14:42:57,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 14:42:57,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 14:42:57,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 14:42:58,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 14:42:58,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 14:42:58,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 14:42:58,029 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 14:42:58,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2022-12-12 14:42:59,058 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 14:42:59,324 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 14:42:59,325 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2022-12-12 14:42:59,342 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/862273944/26e584a2d55348558e166b3782f7bb8e/FLAG0b8d59193 [2022-12-12 14:42:59,354 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/862273944/26e584a2d55348558e166b3782f7bb8e [2022-12-12 14:42:59,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 14:42:59,357 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 14:42:59,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 14:42:59,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 14:42:59,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 14:42:59,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:42:59" (1/1) ... [2022-12-12 14:42:59,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dca5b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:59, skipping insertion in model container [2022-12-12 14:42:59,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:42:59" (1/1) ... [2022-12-12 14:42:59,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 14:42:59,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 14:42:59,546 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-12 14:42:59,999 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2022-12-12 14:43:00,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:43:00,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:43:00,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:43:00,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:43:00,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:43:00,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:43:00,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:43:00,054 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 14:43:00,063 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-12 14:43:00,096 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2022-12-12 14:43:00,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:43:00,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:43:00,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:43:00,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:43:00,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:43:00,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:43:00,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:43:00,199 INFO L208 MainTranslator]: Completed translation [2022-12-12 14:43:00,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00 WrapperNode [2022-12-12 14:43:00,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 14:43:00,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 14:43:00,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 14:43:00,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 14:43:00,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,283 INFO L138 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 115 [2022-12-12 14:43:00,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 14:43:00,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 14:43:00,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 14:43:00,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 14:43:00,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,316 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 14:43:00,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 14:43:00,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 14:43:00,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 14:43:00,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (1/1) ... [2022-12-12 14:43:00,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:43:00,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:43:00,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 14:43:00,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 14:43:00,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 14:43:00,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 14:43:00,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 14:43:00,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 14:43:00,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 14:43:00,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-12 14:43:00,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 14:43:00,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 14:43:00,383 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-12-12 14:43:00,383 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-12-12 14:43:00,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 14:43:00,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 14:43:00,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 14:43:00,384 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 14:43:00,626 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 14:43:00,627 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 14:43:00,840 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 14:43:00,855 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 14:43:00,855 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 14:43:00,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:43:00 BoogieIcfgContainer [2022-12-12 14:43:00,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 14:43:00,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 14:43:00,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 14:43:00,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 14:43:00,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 02:42:59" (1/3) ... [2022-12-12 14:43:00,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a79d75f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:43:00, skipping insertion in model container [2022-12-12 14:43:00,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:43:00" (2/3) ... [2022-12-12 14:43:00,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a79d75f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:43:00, skipping insertion in model container [2022-12-12 14:43:00,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:43:00" (3/3) ... [2022-12-12 14:43:00,869 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2022-12-12 14:43:00,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 14:43:00,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-12 14:43:00,884 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 14:43:00,935 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 14:43:00,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 146 transitions, 308 flow [2022-12-12 14:43:01,035 INFO L130 PetriNetUnfolder]: 8/184 cut-off events. [2022-12-12 14:43:01,035 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 14:43:01,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 8/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 308 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2022-12-12 14:43:01,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 146 transitions, 308 flow [2022-12-12 14:43:01,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 134 transitions, 280 flow [2022-12-12 14:43:01,048 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 14:43:01,061 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 134 transitions, 280 flow [2022-12-12 14:43:01,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 134 transitions, 280 flow [2022-12-12 14:43:01,111 INFO L130 PetriNetUnfolder]: 5/165 cut-off events. [2022-12-12 14:43:01,112 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 14:43:01,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 165 events. 5/165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-12-12 14:43:01,118 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 134 transitions, 280 flow [2022-12-12 14:43:01,118 INFO L226 LiptonReduction]: Number of co-enabled transitions 1780 [2022-12-12 14:43:56,479 INFO L241 LiptonReduction]: Total number of compositions: 110 [2022-12-12 14:43:56,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 14:43:56,495 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;@275cf146, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 14:43:56,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-12 14:43:56,498 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-12 14:43:56,498 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:43:56,498 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:43:56,498 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-12 14:43:56,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 14:43:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:43:56,501 INFO L85 PathProgramCache]: Analyzing trace with hash 500914, now seen corresponding path program 1 times [2022-12-12 14:43:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:43:56,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69314773] [2022-12-12 14:43:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:43:56,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:43:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:43:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:43:56,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:43:56,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69314773] [2022-12-12 14:43:56,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69314773] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:43:56,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:43:56,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 14:43:56,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757713010] [2022-12-12 14:43:56,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:43:56,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-12 14:43:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:43:56,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-12 14:43:56,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-12 14:43:56,743 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2022-12-12 14:43:56,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:43:56,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:43:56,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2022-12-12 14:43:56,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:43:56,963 INFO L130 PetriNetUnfolder]: 961/1712 cut-off events. [2022-12-12 14:43:56,964 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-12 14:43:56,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 1712 events. 961/1712 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10418 event pairs, 960 based on Foata normal form. 82/977 useless extension candidates. Maximal degree in co-relation 3201. Up to 1575 conditions per place. [2022-12-12 14:43:56,974 INFO L137 encePairwiseOnDemand]: 40/41 looper letters, 33 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2022-12-12 14:43:56,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 158 flow [2022-12-12 14:43:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-12 14:43:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-12 14:43:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2022-12-12 14:43:56,982 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2022-12-12 14:43:56,983 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 94 flow. Second operand 2 states and 48 transitions. [2022-12-12 14:43:56,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 158 flow [2022-12-12 14:43:56,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-12 14:43:56,987 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 84 flow [2022-12-12 14:43:56,989 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2022-12-12 14:43:56,992 INFO L295 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2022-12-12 14:43:56,992 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 84 flow [2022-12-12 14:43:56,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:43:56,993 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:43:56,993 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-12 14:43:56,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 14:43:56,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 14:43:56,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:43:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash 15523062, now seen corresponding path program 1 times [2022-12-12 14:43:56,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:43:56,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858061189] [2022-12-12 14:43:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:43:56,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:43:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:43:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:43:57,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:43:57,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858061189] [2022-12-12 14:43:57,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858061189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:43:57,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:43:57,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:43:57,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171877345] [2022-12-12 14:43:57,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:43:57,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:43:57,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:43:57,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:43:57,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:43:57,274 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 41 [2022-12-12 14:43:57,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:43:57,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:43:57,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 41 [2022-12-12 14:43:57,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:43:57,579 INFO L130 PetriNetUnfolder]: 1782/2926 cut-off events. [2022-12-12 14:43:57,579 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 14:43:57,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5858 conditions, 2926 events. 1782/2926 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 17125 event pairs, 826 based on Foata normal form. 0/1477 useless extension candidates. Maximal degree in co-relation 5855. Up to 2114 conditions per place. [2022-12-12 14:43:57,589 INFO L137 encePairwiseOnDemand]: 30/41 looper letters, 49 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2022-12-12 14:43:57,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 244 flow [2022-12-12 14:43:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:43:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:43:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2022-12-12 14:43:57,591 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2022-12-12 14:43:57,592 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 84 flow. Second operand 3 states and 66 transitions. [2022-12-12 14:43:57,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 244 flow [2022-12-12 14:43:57,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 61 transitions, 244 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 14:43:57,594 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 148 flow [2022-12-12 14:43:57,594 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2022-12-12 14:43:57,595 INFO L295 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2022-12-12 14:43:57,595 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 148 flow [2022-12-12 14:43:57,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:43:57,595 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:43:57,595 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-12 14:43:57,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 14:43:57,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 14:43:57,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:43:57,597 INFO L85 PathProgramCache]: Analyzing trace with hash 481212783, now seen corresponding path program 1 times [2022-12-12 14:43:57,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:43:57,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133469212] [2022-12-12 14:43:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:43:57,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:43:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:43:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:43:57,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:43:57,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133469212] [2022-12-12 14:43:57,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133469212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:43:57,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:43:57,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:43:57,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840360587] [2022-12-12 14:43:57,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:43:57,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:43:57,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:43:57,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:43:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:43:57,784 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 41 [2022-12-12 14:43:57,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:43:57,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:43:57,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 41 [2022-12-12 14:43:57,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:43:58,102 INFO L130 PetriNetUnfolder]: 1917/3184 cut-off events. [2022-12-12 14:43:58,103 INFO L131 PetriNetUnfolder]: For 379/379 co-relation queries the response was YES. [2022-12-12 14:43:58,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7929 conditions, 3184 events. 1917/3184 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 19474 event pairs, 935 based on Foata normal form. 176/2172 useless extension candidates. Maximal degree in co-relation 7924. Up to 2371 conditions per place. [2022-12-12 14:43:58,113 INFO L137 encePairwiseOnDemand]: 31/41 looper letters, 54 selfloop transitions, 17 changer transitions 3/76 dead transitions. [2022-12-12 14:43:58,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 76 transitions, 394 flow [2022-12-12 14:43:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:43:58,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:43:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-12-12 14:43:58,114 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2022-12-12 14:43:58,115 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 148 flow. Second operand 3 states and 65 transitions. [2022-12-12 14:43:58,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 76 transitions, 394 flow [2022-12-12 14:43:58,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 76 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 14:43:58,122 INFO L231 Difference]: Finished difference. Result has 47 places, 61 transitions, 279 flow [2022-12-12 14:43:58,122 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=47, PETRI_TRANSITIONS=61} [2022-12-12 14:43:58,123 INFO L295 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2022-12-12 14:43:58,123 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 61 transitions, 279 flow [2022-12-12 14:43:58,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:43:58,123 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:43:58,123 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:43:58,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 14:43:58,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 14:43:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:43:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1779047000, now seen corresponding path program 1 times [2022-12-12 14:43:58,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:43:58,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608399665] [2022-12-12 14:43:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:43:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:43:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:43:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:43:58,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:43:58,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608399665] [2022-12-12 14:43:58,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608399665] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:43:58,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:43:58,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:43:58,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217008908] [2022-12-12 14:43:58,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:43:58,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:43:58,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:43:58,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:43:58,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:43:58,183 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2022-12-12 14:43:58,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 61 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:43:58,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:43:58,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2022-12-12 14:43:58,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:43:58,287 INFO L130 PetriNetUnfolder]: 413/751 cut-off events. [2022-12-12 14:43:58,287 INFO L131 PetriNetUnfolder]: For 318/384 co-relation queries the response was YES. [2022-12-12 14:43:58,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 751 events. 413/751 cut-off events. For 318/384 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3707 event pairs, 256 based on Foata normal form. 118/621 useless extension candidates. Maximal degree in co-relation 1925. Up to 466 conditions per place. [2022-12-12 14:43:58,289 INFO L137 encePairwiseOnDemand]: 38/41 looper letters, 21 selfloop transitions, 2 changer transitions 20/48 dead transitions. [2022-12-12 14:43:58,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 242 flow [2022-12-12 14:43:58,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:43:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:43:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-12-12 14:43:58,291 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2022-12-12 14:43:58,291 INFO L175 Difference]: Start difference. First operand has 47 places, 61 transitions, 279 flow. Second operand 3 states and 65 transitions. [2022-12-12 14:43:58,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 242 flow [2022-12-12 14:43:58,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 214 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-12-12 14:43:58,292 INFO L231 Difference]: Finished difference. Result has 40 places, 22 transitions, 64 flow [2022-12-12 14:43:58,292 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2022-12-12 14:43:58,293 INFO L295 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2022-12-12 14:43:58,293 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 64 flow [2022-12-12 14:43:58,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:43:58,293 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:43:58,293 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:43:58,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 14:43:58,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 14:43:58,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:43:58,294 INFO L85 PathProgramCache]: Analyzing trace with hash 252227229, now seen corresponding path program 1 times [2022-12-12 14:43:58,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:43:58,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451167610] [2022-12-12 14:43:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:43:58,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:43:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:43:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:43:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:43:59,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451167610] [2022-12-12 14:43:59,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451167610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:43:59,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:43:59,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-12 14:43:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720547904] [2022-12-12 14:43:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:43:59,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 14:43:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:43:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 14:43:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-12 14:43:59,670 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-12 14:43:59,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 64 flow. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:43:59,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:43:59,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-12 14:43:59,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:44:00,696 INFO L130 PetriNetUnfolder]: 386/738 cut-off events. [2022-12-12 14:44:00,696 INFO L131 PetriNetUnfolder]: For 219/219 co-relation queries the response was YES. [2022-12-12 14:44:00,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1962 conditions, 738 events. 386/738 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3647 event pairs, 41 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 1956. Up to 326 conditions per place. [2022-12-12 14:44:00,698 INFO L137 encePairwiseOnDemand]: 27/41 looper letters, 68 selfloop transitions, 33 changer transitions 27/128 dead transitions. [2022-12-12 14:44:00,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 128 transitions, 653 flow [2022-12-12 14:44:00,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 14:44:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 14:44:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 129 transitions. [2022-12-12 14:44:00,700 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2097560975609756 [2022-12-12 14:44:00,700 INFO L175 Difference]: Start difference. First operand has 40 places, 22 transitions, 64 flow. Second operand 15 states and 129 transitions. [2022-12-12 14:44:00,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 128 transitions, 653 flow [2022-12-12 14:44:00,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 128 transitions, 621 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:44:00,702 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 301 flow [2022-12-12 14:44:00,702 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=301, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2022-12-12 14:44:00,703 INFO L295 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2022-12-12 14:44:00,703 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 301 flow [2022-12-12 14:44:00,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:44:00,703 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:44:00,703 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:44:00,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 14:44:00,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 14:44:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:44:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash 163863005, now seen corresponding path program 2 times [2022-12-12 14:44:00,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:44:00,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981019227] [2022-12-12 14:44:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:44:00,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:44:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 14:44:00,742 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-12 14:44:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 14:44:00,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-12 14:44:00,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-12 14:44:00,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-12 14:44:00,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-12 14:44:00,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-12-12 14:44:00,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-12-12 14:44:00,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-12-12 14:44:00,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-12-12 14:44:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 14:44:00,780 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-12-12 14:44:00,783 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 14:44:00,783 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 14:44:00,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 02:44:00 BasicIcfg [2022-12-12 14:44:00,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 14:44:00,810 INFO L158 Benchmark]: Toolchain (without parser) took 61452.71ms. Allocated memory was 231.7MB in the beginning and 316.7MB in the end (delta: 84.9MB). Free memory was 204.8MB in the beginning and 123.0MB in the end (delta: 81.8MB). Peak memory consumption was 167.8MB. Max. memory is 8.0GB. [2022-12-12 14:44:00,810 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 231.7MB. Free memory was 209.5MB in the beginning and 209.5MB in the end (delta: 71.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:44:00,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 841.72ms. Allocated memory is still 231.7MB. Free memory was 204.3MB in the beginning and 149.2MB in the end (delta: 55.1MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2022-12-12 14:44:00,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.83ms. Allocated memory was 231.7MB in the beginning and 316.7MB in the end (delta: 84.9MB). Free memory was 149.2MB in the beginning and 290.6MB in the end (delta: -141.4MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. [2022-12-12 14:44:00,810 INFO L158 Benchmark]: Boogie Preprocessor took 37.39ms. Allocated memory is still 316.7MB. Free memory was 290.6MB in the beginning and 287.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:44:00,811 INFO L158 Benchmark]: RCFGBuilder took 535.82ms. Allocated memory is still 316.7MB. Free memory was 287.9MB in the beginning and 264.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 14:44:00,811 INFO L158 Benchmark]: TraceAbstraction took 59946.26ms. Allocated memory is still 316.7MB. Free memory was 263.8MB in the beginning and 123.0MB in the end (delta: 140.8MB). Peak memory consumption was 140.8MB. Max. memory is 8.0GB. [2022-12-12 14:44:00,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 231.7MB. Free memory was 209.5MB in the beginning and 209.5MB in the end (delta: 71.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 841.72ms. Allocated memory is still 231.7MB. Free memory was 204.3MB in the beginning and 149.2MB in the end (delta: 55.1MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 81.83ms. Allocated memory was 231.7MB in the beginning and 316.7MB in the end (delta: 84.9MB). Free memory was 149.2MB in the beginning and 290.6MB in the end (delta: -141.4MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.39ms. Allocated memory is still 316.7MB. Free memory was 290.6MB in the beginning and 287.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 535.82ms. Allocated memory is still 316.7MB. Free memory was 287.9MB in the beginning and 264.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 59946.26ms. Allocated memory is still 316.7MB. Free memory was 263.8MB in the beginning and 123.0MB in the end (delta: 140.8MB). Peak memory consumption was 140.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 55.4s, 136 PlacesBefore, 45 PlacesAfterwards, 134 TransitionsBefore, 41 TransitionsAfterwards, 1780 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 60 TrivialYvCompositions, 45 ConcurrentYvCompositions, 2 ChoiceCompositions, 110 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1537, independent: 1446, independent conditional: 1446, independent unconditional: 0, dependent: 47, dependent conditional: 47, dependent unconditional: 0, unknown: 44, unknown conditional: 44, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1537, independent: 1446, independent conditional: 0, independent unconditional: 1446, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 44, unknown conditional: 0, unknown unconditional: 44] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1537, independent: 1446, independent conditional: 0, independent unconditional: 1446, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 44, unknown conditional: 0, unknown unconditional: 44] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1537, independent: 1446, independent conditional: 0, independent unconditional: 1446, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 44, unknown conditional: 0, unknown unconditional: 44] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1209, independent: 1169, independent conditional: 0, independent unconditional: 1169, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1209, independent: 1168, independent conditional: 0, independent unconditional: 1168, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43513, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 443, dependent conditional: 0, dependent unconditional: 443, unknown: 43070, unknown conditional: 0, unknown unconditional: 43070] ], Cache Queries: [ total: 1537, independent: 277, independent conditional: 0, independent unconditional: 277, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 1233, unknown conditional: 0, unknown unconditional: 1233] , Statistics on independence cache: Total cache size (in pairs): 2131, Positive cache size: 2111, Positive conditional cache size: 0, Positive unconditional cache size: 2111, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 20, Unknown conditional cache size: 0, Unknown unconditional cache size: 20, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1731] CALL, EXPR 0 my_drv_init() [L1725] 0 return 0; [L1731] RET, EXPR 0 my_drv_init() [L1731] 0 int ret = my_drv_init(); [L1732] COND TRUE 0 ret==0 [L1733] 0 int probe_ret; [L1734] 0 struct my_data data; [L1735] CALL, EXPR 0 my_drv_probe(&data) [L1704] 0 struct device *d = &data->dev; [L1706] 0 data->shared.a = 0 [L1707] 0 data->shared.b = 0 [L1708] 0 int res = __VERIFIER_nondet_int(); [L1709] COND FALSE 0 !(\read(res)) [L1711] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-2, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1712] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=-1, res=0, t1={3:0}, t2={4:0}] [L1713] 0 return 0; [L1735] RET, EXPR 0 my_drv_probe(&data) [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 2 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1735] 0 probe_ret = my_drv_probe(&data) [L1736] COND TRUE 0 probe_ret==0 [L1737] CALL 0 my_drv_disconnect(&data) [L1719] 0 void *status; [L1720] 0 \read(t1) VAL [\read(t1)=-2, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1696] 1 int lb = data->shared.b; [L1699] 1 data->shared.b = lb + 1 [L1701] 1 return 0; [L1720] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-2, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t1, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1699] 2 data->shared.b = lb + 1 [L1701] 2 return 0; [L1721] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1721] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t2, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1737] RET 0 my_drv_disconnect(&data) [L1738] EXPR 0 data.shared.a [L1738] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND FALSE 0 !(!expression) [L1738] RET 0 ldv_assert(data.shared.a==1) [L1739] EXPR 0 data.shared.b [L1739] CALL 0 ldv_assert(data.shared.b==2) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, lb=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1711]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 153 locations, 6 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: 59.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 55.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1209 IncrementalHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 16 mSDtfsCounter, 1209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=301occurred in iteration=5, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 509 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-12 14:44:00,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...