/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:02:55,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:02:55,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:02:55,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:02:55,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:02:55,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:02:55,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:02:55,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:02:55,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:02:55,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:02:55,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:02:55,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:02:55,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:02:55,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:02:55,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:02:55,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:02:55,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:02:55,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:02:55,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:02:55,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:02:55,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:02:55,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:02:55,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:02:55,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:02:55,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:02:55,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:02:55,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:02:55,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:02:55,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:02:55,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:02:55,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:02:55,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:02:55,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:02:55,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:02:55,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:02:55,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:02:55,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:02:55,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:02:55,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:02:55,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:02:55,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:02:55,548 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-VariableLbe.epf [2023-01-28 07:02:55,565 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:02:55,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:02:55,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:02:55,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:02:55,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:02:55,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:02:55,567 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:02:55,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:02:55,567 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:02:55,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:02:55,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:02:55,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:02:55,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:02:55,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:02:55,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:02:55,568 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:02:55,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:02:55,568 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:02:55,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:02:55,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:02:55,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:02:55,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:02:55,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:02:55,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:02:55,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:02:55,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:02:55,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:02:55,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:02:55,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:02:55,570 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:02:55,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:02:55,571 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:02:55,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:02:55,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:02:55,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:02:55,803 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:02:55,804 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:02:55,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2023-01-28 07:02:56,956 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:02:57,184 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:02:57,184 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2023-01-28 07:02:57,206 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2b3f65b/bfe5fc28c6cb44ffa5b2a75f4396dee8/FLAGba0900423 [2023-01-28 07:02:57,222 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2b3f65b/bfe5fc28c6cb44ffa5b2a75f4396dee8 [2023-01-28 07:02:57,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:02:57,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:02:57,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:02:57,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:02:57,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:02:57,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6191358c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57, skipping insertion in model container [2023-01-28 07:02:57,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:02:57,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:02:57,426 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i[945,958] [2023-01-28 07:02:57,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:02:57,569 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:02:57,583 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i[945,958] [2023-01-28 07:02:57,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:02:57,645 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:02:57,646 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:02:57,651 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:02:57,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57 WrapperNode [2023-01-28 07:02:57,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:02:57,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:02:57,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:02:57,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:02:57,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,702 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-28 07:02:57,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:02:57,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:02:57,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:02:57,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:02:57,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,719 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:02:57,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:02:57,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:02:57,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:02:57,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (1/1) ... [2023-01-28 07:02:57,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:02:57,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:02:57,781 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) [2023-01-28 07:02:57,786 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 [2023-01-28 07:02:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:02:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:02:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:02:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:02:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:02:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:02:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:02:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:02:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:02:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:02:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:02:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:02:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:02:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:02:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:02:57,814 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:02:57,929 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:02:57,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:02:58,127 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:02:58,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:02:58,133 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:02:58,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:02:58 BoogieIcfgContainer [2023-01-28 07:02:58,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:02:58,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:02:58,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:02:58,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:02:58,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:02:57" (1/3) ... [2023-01-28 07:02:58,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb90a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:02:58, skipping insertion in model container [2023-01-28 07:02:58,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:57" (2/3) ... [2023-01-28 07:02:58,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb90a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:02:58, skipping insertion in model container [2023-01-28 07:02:58,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:02:58" (3/3) ... [2023-01-28 07:02:58,140 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2023-01-28 07:02:58,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:02:58,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:02:58,153 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:02:58,211 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:02:58,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 07:02:58,306 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-01-28 07:02:58,306 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:58,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 07:02:58,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 07:02:58,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-01-28 07:02:58,317 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:02:58,325 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 07:02:58,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 07:02:58,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-01-28 07:02:58,355 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-01-28 07:02:58,356 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:58,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 07:02:58,357 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 07:03:00,202 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-01-28 07:03:00,203 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-01-28 07:03:00,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:03:00,222 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;@18eddcca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:03:00,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:03:00,226 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 07:03:00,226 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:03:00,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:00,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:00,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:00,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:00,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1968690569, now seen corresponding path program 1 times [2023-01-28 07:03:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:00,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222134728] [2023-01-28 07:03:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:00,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:00,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:00,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222134728] [2023-01-28 07:03:00,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222134728] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:00,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:00,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:03:00,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561998107] [2023-01-28 07:03:00,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:00,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:03:00,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:03:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:03:00,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 141 [2023-01-28 07:03:00,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2023-01-28 07:03:00,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:00,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 141 [2023-01-28 07:03:00,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:01,002 INFO L130 PetriNetUnfolder]: 381/644 cut-off events. [2023-01-28 07:03:01,002 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-01-28 07:03:01,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 644 events. 381/644 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2950 event pairs, 117 based on Foata normal form. 26/670 useless extension candidates. Maximal degree in co-relation 1308. Up to 439 conditions per place. [2023-01-28 07:03:01,012 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 22 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-01-28 07:03:01,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 122 flow [2023-01-28 07:03:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:03:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:03:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-01-28 07:03:01,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697399527186762 [2023-01-28 07:03:01,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-01-28 07:03:01,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-01-28 07:03:01,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:01,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-01-28 07:03:01,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2023-01-28 07:03:01,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-01-28 07:03:01,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-01-28 07:03:01,048 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 241 transitions. [2023-01-28 07:03:01,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 122 flow [2023-01-28 07:03:01,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:03:01,060 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 78 flow [2023-01-28 07:03:01,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-01-28 07:03:01,066 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-28 07:03:01,066 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 78 flow [2023-01-28 07:03:01,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2023-01-28 07:03:01,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:01,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:01,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:03:01,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:01,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:01,068 INFO L85 PathProgramCache]: Analyzing trace with hash 899864850, now seen corresponding path program 1 times [2023-01-28 07:03:01,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:01,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66637082] [2023-01-28 07:03:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:01,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:01,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:01,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66637082] [2023-01-28 07:03:01,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66637082] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:01,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:01,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:03:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712721292] [2023-01-28 07:03:01,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:01,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:01,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 141 [2023-01-28 07:03:01,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-01-28 07:03:01,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:01,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 141 [2023-01-28 07:03:01,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:01,353 INFO L130 PetriNetUnfolder]: 359/600 cut-off events. [2023-01-28 07:03:01,353 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2023-01-28 07:03:01,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 600 events. 359/600 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2647 event pairs, 99 based on Foata normal form. 8/603 useless extension candidates. Maximal degree in co-relation 1566. Up to 339 conditions per place. [2023-01-28 07:03:01,357 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 24 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-01-28 07:03:01,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 166 flow [2023-01-28 07:03:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:03:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:03:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-01-28 07:03:01,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549645390070922 [2023-01-28 07:03:01,363 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-01-28 07:03:01,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-01-28 07:03:01,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:01,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-01-28 07:03:01,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2023-01-28 07:03:01,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:01,369 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:01,369 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 78 flow. Second operand 4 states and 313 transitions. [2023-01-28 07:03:01,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 166 flow [2023-01-28 07:03:01,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:03:01,373 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 106 flow [2023-01-28 07:03:01,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-01-28 07:03:01,374 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 07:03:01,375 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 106 flow [2023-01-28 07:03:01,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-01-28 07:03:01,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:01,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:01,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:03:01,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:01,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash 899864199, now seen corresponding path program 1 times [2023-01-28 07:03:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:01,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024004014] [2023-01-28 07:03:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:01,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:01,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:01,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024004014] [2023-01-28 07:03:01,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024004014] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:01,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:01,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:03:01,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131015072] [2023-01-28 07:03:01,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:01,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:01,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:01,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 141 [2023-01-28 07:03:01,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-01-28 07:03:01,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:01,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 141 [2023-01-28 07:03:01,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:01,671 INFO L130 PetriNetUnfolder]: 336/575 cut-off events. [2023-01-28 07:03:01,671 INFO L131 PetriNetUnfolder]: For 418/418 co-relation queries the response was YES. [2023-01-28 07:03:01,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 575 events. 336/575 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2623 event pairs, 73 based on Foata normal form. 6/581 useless extension candidates. Maximal degree in co-relation 1600. Up to 360 conditions per place. [2023-01-28 07:03:01,677 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 29 selfloop transitions, 11 changer transitions 0/41 dead transitions. [2023-01-28 07:03:01,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 248 flow [2023-01-28 07:03:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:03:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:03:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-01-28 07:03:01,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2023-01-28 07:03:01,678 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-01-28 07:03:01,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-01-28 07:03:01,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:01,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-01-28 07:03:01,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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) [2023-01-28 07:03:01,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:01,681 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-01-28 07:03:01,681 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 106 flow. Second operand 4 states and 321 transitions. [2023-01-28 07:03:01,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 248 flow [2023-01-28 07:03:01,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:03:01,686 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 169 flow [2023-01-28 07:03:01,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-01-28 07:03:01,688 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-01-28 07:03:01,689 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 169 flow [2023-01-28 07:03:01,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-01-28 07:03:01,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:01,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:01,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:03:01,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:01,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2126005278, now seen corresponding path program 1 times [2023-01-28 07:03:01,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:01,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470064998] [2023-01-28 07:03:01,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:01,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:01,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:01,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470064998] [2023-01-28 07:03:01,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470064998] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:01,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:01,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:03:01,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833027788] [2023-01-28 07:03:01,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:01,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:01,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:01,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:01,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:01,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:03:01,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2023-01-28 07:03:01,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:01,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:03:01,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:01,960 INFO L130 PetriNetUnfolder]: 525/848 cut-off events. [2023-01-28 07:03:01,961 INFO L131 PetriNetUnfolder]: For 1248/1248 co-relation queries the response was YES. [2023-01-28 07:03:01,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2636 conditions, 848 events. 525/848 cut-off events. For 1248/1248 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3599 event pairs, 67 based on Foata normal form. 14/862 useless extension candidates. Maximal degree in co-relation 2618. Up to 329 conditions per place. [2023-01-28 07:03:01,967 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 42 selfloop transitions, 19 changer transitions 0/61 dead transitions. [2023-01-28 07:03:01,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 452 flow [2023-01-28 07:03:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:03:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:03:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2023-01-28 07:03:01,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-01-28 07:03:01,969 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 395 transitions. [2023-01-28 07:03:01,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 395 transitions. [2023-01-28 07:03:01,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:01,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 395 transitions. [2023-01-28 07:03:01,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 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) [2023-01-28 07:03:01,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:01,980 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:01,980 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 169 flow. Second operand 5 states and 395 transitions. [2023-01-28 07:03:01,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 452 flow [2023-01-28 07:03:01,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 450 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 07:03:01,987 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 359 flow [2023-01-28 07:03:01,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-01-28 07:03:01,988 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 07:03:01,988 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 359 flow [2023-01-28 07:03:01,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2023-01-28 07:03:01,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:01,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:01,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:03:01,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:01,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2125985748, now seen corresponding path program 2 times [2023-01-28 07:03:01,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:01,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105302578] [2023-01-28 07:03:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:01,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:02,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105302578] [2023-01-28 07:03:02,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105302578] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:02,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:02,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:03:02,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121784591] [2023-01-28 07:03:02,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:02,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:03:02,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:02,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:03:02,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:03:02,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:03:02,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 359 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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) [2023-01-28 07:03:02,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:02,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:03:02,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:02,297 INFO L130 PetriNetUnfolder]: 577/950 cut-off events. [2023-01-28 07:03:02,297 INFO L131 PetriNetUnfolder]: For 3196/3196 co-relation queries the response was YES. [2023-01-28 07:03:02,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 950 events. 577/950 cut-off events. For 3196/3196 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4209 event pairs, 141 based on Foata normal form. 40/990 useless extension candidates. Maximal degree in co-relation 3498. Up to 372 conditions per place. [2023-01-28 07:03:02,303 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 30 selfloop transitions, 7 changer transitions 22/59 dead transitions. [2023-01-28 07:03:02,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 570 flow [2023-01-28 07:03:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:03:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:03:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2023-01-28 07:03:02,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2023-01-28 07:03:02,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2023-01-28 07:03:02,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2023-01-28 07:03:02,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:02,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2023-01-28 07:03:02,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-01-28 07:03:02,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:02,308 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:02,309 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 359 flow. Second operand 5 states and 385 transitions. [2023-01-28 07:03:02,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 570 flow [2023-01-28 07:03:02,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:03:02,318 INFO L231 Difference]: Finished difference. Result has 50 places, 24 transitions, 208 flow [2023-01-28 07:03:02,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=50, PETRI_TRANSITIONS=24} [2023-01-28 07:03:02,320 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-28 07:03:02,320 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 24 transitions, 208 flow [2023-01-28 07:03:02,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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) [2023-01-28 07:03:02,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:02,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:02,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:03:02,321 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:02,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:02,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1996464414, now seen corresponding path program 1 times [2023-01-28 07:03:02,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:02,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939659878] [2023-01-28 07:03:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:02,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:02,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:02,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939659878] [2023-01-28 07:03:02,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939659878] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:02,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:02,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:03:02,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563978678] [2023-01-28 07:03:02,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:02,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:02,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:02,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:02,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:03:02,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 24 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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) [2023-01-28 07:03:02,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:02,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:03:02,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:02,547 INFO L130 PetriNetUnfolder]: 173/350 cut-off events. [2023-01-28 07:03:02,548 INFO L131 PetriNetUnfolder]: For 1909/1978 co-relation queries the response was YES. [2023-01-28 07:03:02,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 350 events. 173/350 cut-off events. For 1909/1978 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1634 event pairs, 45 based on Foata normal form. 27/364 useless extension candidates. Maximal degree in co-relation 1279. Up to 211 conditions per place. [2023-01-28 07:03:02,550 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 30 selfloop transitions, 7 changer transitions 6/51 dead transitions. [2023-01-28 07:03:02,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 469 flow [2023-01-28 07:03:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:03:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:03:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-01-28 07:03:02,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2023-01-28 07:03:02,552 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-01-28 07:03:02,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-01-28 07:03:02,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:02,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-01-28 07:03:02,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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) [2023-01-28 07:03:02,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:02,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:02,555 INFO L175 Difference]: Start difference. First operand has 50 places, 24 transitions, 208 flow. Second operand 5 states and 399 transitions. [2023-01-28 07:03:02,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 469 flow [2023-01-28 07:03:02,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 323 flow, removed 17 selfloop flow, removed 14 redundant places. [2023-01-28 07:03:02,559 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 175 flow [2023-01-28 07:03:02,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-01-28 07:03:02,562 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-01-28 07:03:02,562 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 175 flow [2023-01-28 07:03:02,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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) [2023-01-28 07:03:02,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:02,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:02,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:03:02,563 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:02,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:02,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1812874730, now seen corresponding path program 1 times [2023-01-28 07:03:02,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:02,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604982924] [2023-01-28 07:03:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:02,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:02,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:02,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604982924] [2023-01-28 07:03:02,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604982924] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:02,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:02,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:03:02,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771347979] [2023-01-28 07:03:02,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:02,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:03:02,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:02,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:03:02,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:03:02,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:03:02,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 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) [2023-01-28 07:03:02,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:02,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:03:02,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:02,779 INFO L130 PetriNetUnfolder]: 145/315 cut-off events. [2023-01-28 07:03:02,780 INFO L131 PetriNetUnfolder]: For 671/766 co-relation queries the response was YES. [2023-01-28 07:03:02,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 315 events. 145/315 cut-off events. For 671/766 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1497 event pairs, 18 based on Foata normal form. 62/368 useless extension candidates. Maximal degree in co-relation 1177. Up to 160 conditions per place. [2023-01-28 07:03:02,782 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 33 selfloop transitions, 13 changer transitions 11/65 dead transitions. [2023-01-28 07:03:02,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 489 flow [2023-01-28 07:03:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:03:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:03:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 555 transitions. [2023-01-28 07:03:02,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5623100303951368 [2023-01-28 07:03:02,784 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 555 transitions. [2023-01-28 07:03:02,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 555 transitions. [2023-01-28 07:03:02,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:02,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 555 transitions. [2023-01-28 07:03:02,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.28571428571429) internal successors, (555), 7 states have internal predecessors, (555), 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) [2023-01-28 07:03:02,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 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) [2023-01-28 07:03:02,788 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 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) [2023-01-28 07:03:02,788 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 175 flow. Second operand 7 states and 555 transitions. [2023-01-28 07:03:02,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 489 flow [2023-01-28 07:03:02,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:03:02,790 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 259 flow [2023-01-28 07:03:02,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-01-28 07:03:02,791 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-01-28 07:03:02,791 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 259 flow [2023-01-28 07:03:02,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 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) [2023-01-28 07:03:02,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:02,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:02,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:03:02,792 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:02,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash 728392813, now seen corresponding path program 1 times [2023-01-28 07:03:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:02,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670973449] [2023-01-28 07:03:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:02,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:02,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670973449] [2023-01-28 07:03:02,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670973449] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:02,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:02,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:03:02,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658632908] [2023-01-28 07:03:02,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:02,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:03:02,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:02,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:03:02,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:03:02,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-01-28 07:03:02,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 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) [2023-01-28 07:03:02,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:02,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-01-28 07:03:02,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:03,023 INFO L130 PetriNetUnfolder]: 124/283 cut-off events. [2023-01-28 07:03:03,023 INFO L131 PetriNetUnfolder]: For 1016/1133 co-relation queries the response was YES. [2023-01-28 07:03:03,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 283 events. 124/283 cut-off events. For 1016/1133 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1348 event pairs, 14 based on Foata normal form. 68/343 useless extension candidates. Maximal degree in co-relation 1239. Up to 138 conditions per place. [2023-01-28 07:03:03,026 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 29 selfloop transitions, 17 changer transitions 11/65 dead transitions. [2023-01-28 07:03:03,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 547 flow [2023-01-28 07:03:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:03:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:03:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 699 transitions. [2023-01-28 07:03:03,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2023-01-28 07:03:03,028 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 699 transitions. [2023-01-28 07:03:03,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 699 transitions. [2023-01-28 07:03:03,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:03,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 699 transitions. [2023-01-28 07:03:03,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 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) [2023-01-28 07:03:03,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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) [2023-01-28 07:03:03,032 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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) [2023-01-28 07:03:03,033 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 259 flow. Second operand 9 states and 699 transitions. [2023-01-28 07:03:03,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 547 flow [2023-01-28 07:03:03,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 517 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 07:03:03,038 INFO L231 Difference]: Finished difference. Result has 60 places, 37 transitions, 285 flow [2023-01-28 07:03:03,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=60, PETRI_TRANSITIONS=37} [2023-01-28 07:03:03,040 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 33 predicate places. [2023-01-28 07:03:03,040 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 37 transitions, 285 flow [2023-01-28 07:03:03,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 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) [2023-01-28 07:03:03,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:03,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:03,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:03:03,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:03,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:03,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1287629806, now seen corresponding path program 1 times [2023-01-28 07:03:03,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:03,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594537314] [2023-01-28 07:03:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:03,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:03,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594537314] [2023-01-28 07:03:03,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594537314] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:03,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:03,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:03:03,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199988577] [2023-01-28 07:03:03,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:03,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:03,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:03,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 07:03:03,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 37 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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) [2023-01-28 07:03:03,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:03,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 07:03:03,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:03,269 INFO L130 PetriNetUnfolder]: 202/420 cut-off events. [2023-01-28 07:03:03,269 INFO L131 PetriNetUnfolder]: For 1487/1487 co-relation queries the response was YES. [2023-01-28 07:03:03,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 420 events. 202/420 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1949 event pairs, 25 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1889. Up to 220 conditions per place. [2023-01-28 07:03:03,271 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2023-01-28 07:03:03,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 657 flow [2023-01-28 07:03:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:03:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:03:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2023-01-28 07:03:03,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2023-01-28 07:03:03,273 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2023-01-28 07:03:03,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2023-01-28 07:03:03,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:03,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2023-01-28 07:03:03,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 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) [2023-01-28 07:03:03,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:03,276 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-01-28 07:03:03,276 INFO L175 Difference]: Start difference. First operand has 60 places, 37 transitions, 285 flow. Second operand 5 states and 384 transitions. [2023-01-28 07:03:03,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 657 flow [2023-01-28 07:03:03,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 514 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-01-28 07:03:03,282 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-01-28 07:03:03,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-01-28 07:03:03,283 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-28 07:03:03,283 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-01-28 07:03:03,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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) [2023-01-28 07:03:03,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:03:03,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:03:03,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:03:03,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:03:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:03:03,288 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:03,290 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:03:03,290 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:03:03,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:03:03 BasicIcfg [2023-01-28 07:03:03,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:03:03,295 INFO L158 Benchmark]: Toolchain (without parser) took 6069.16ms. Allocated memory was 360.7MB in the beginning and 465.6MB in the end (delta: 104.9MB). Free memory was 314.5MB in the beginning and 222.5MB in the end (delta: 92.0MB). Peak memory consumption was 198.4MB. Max. memory is 16.0GB. [2023-01-28 07:03:03,295 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 360.7MB. Free memory is still 315.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:03:03,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.59ms. Allocated memory is still 360.7MB. Free memory was 314.5MB in the beginning and 294.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 07:03:03,295 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.00ms. Allocated memory is still 360.7MB. Free memory was 294.4MB in the beginning and 292.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:03:03,295 INFO L158 Benchmark]: Boogie Preprocessor took 19.23ms. Allocated memory is still 360.7MB. Free memory was 292.3MB in the beginning and 290.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:03:03,296 INFO L158 Benchmark]: RCFGBuilder took 397.97ms. Allocated memory is still 360.7MB. Free memory was 290.9MB in the beginning and 277.1MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 07:03:03,296 INFO L158 Benchmark]: TraceAbstraction took 5158.74ms. Allocated memory was 360.7MB in the beginning and 465.6MB in the end (delta: 104.9MB). Free memory was 276.4MB in the beginning and 222.5MB in the end (delta: 53.9MB). Peak memory consumption was 160.7MB. Max. memory is 16.0GB. [2023-01-28 07:03:03,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 360.7MB. Free memory is still 315.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 425.59ms. Allocated memory is still 360.7MB. Free memory was 314.5MB in the beginning and 294.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.00ms. Allocated memory is still 360.7MB. Free memory was 294.4MB in the beginning and 292.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.23ms. Allocated memory is still 360.7MB. Free memory was 292.3MB in the beginning and 290.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 397.97ms. Allocated memory is still 360.7MB. Free memory was 290.9MB in the beginning and 277.1MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5158.74ms. Allocated memory was 360.7MB in the beginning and 465.6MB in the end (delta: 104.9MB). Free memory was 276.4MB in the beginning and 222.5MB in the end (delta: 53.9MB). Peak memory consumption was 160.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1216, independent: 1139, independent conditional: 0, independent unconditional: 1139, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 578, independent: 555, independent conditional: 0, independent unconditional: 555, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1216, independent: 584, independent conditional: 0, independent unconditional: 584, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 578, unknown conditional: 0, unknown unconditional: 578] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 436 IncrementalHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 17 mSDtfsCounter, 436 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=359occurred in iteration=4, InterpolantAutomatonStates: 47, 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, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 407 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 07:03:03,320 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...