/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 21:42:12,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 21:42:12,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 21:42:12,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 21:42:12,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 21:42:12,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 21:42:12,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 21:42:12,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 21:42:12,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 21:42:12,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 21:42:12,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 21:42:12,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 21:42:12,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 21:42:12,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 21:42:12,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 21:42:12,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 21:42:12,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 21:42:12,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 21:42:12,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 21:42:12,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 21:42:12,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 21:42:12,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 21:42:12,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 21:42:12,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 21:42:12,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 21:42:12,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 21:42:12,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 21:42:12,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 21:42:12,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 21:42:12,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 21:42:12,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 21:42:12,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 21:42:12,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 21:42:12,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 21:42:12,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 21:42:12,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 21:42:12,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 21:42:12,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 21:42:12,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 21:42:12,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 21:42:12,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 21:42:12,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 21:42:12,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 21:42:12,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 21:42:12,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 21:42:12,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 21:42:12,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 21:42:12,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 21:42:12,925 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 21:42:12,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 21:42:12,925 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 21:42:12,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 21:42:12,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 21:42:12,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 21:42:12,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 21:42:12,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 21:42:12,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 21:42:12,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 21:42:12,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 21:42:12,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 21:42:12,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 21:42:12,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 21:42:12,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 21:42:12,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 21:42:12,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 21:42:12,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:42:12,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 21:42:12,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 21:42:12,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 21:42:12,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 21:42:12,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 21:42:12,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 21:42:12,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 21:42:13,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 21:42:13,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 21:42:13,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 21:42:13,201 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 21:42:13,201 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 21:42:13,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2022-12-12 21:42:14,158 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 21:42:14,365 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 21:42:14,365 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2022-12-12 21:42:14,384 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e27ea030/2e4c360a92d24d149a4c3807e0d962d6/FLAGdb56e4d63 [2022-12-12 21:42:14,394 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e27ea030/2e4c360a92d24d149a4c3807e0d962d6 [2022-12-12 21:42:14,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 21:42:14,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 21:42:14,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 21:42:14,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 21:42:14,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 21:42:14,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e364c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14, skipping insertion in model container [2022-12-12 21:42:14,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 21:42:14,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 21:42:14,519 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i[945,958] [2022-12-12 21:42:14,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,625 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,626 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,626 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,627 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,628 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:42:14,636 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 21:42:14,651 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i[945,958] [2022-12-12 21:42:14,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:14,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:14,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:42:14,717 INFO L208 MainTranslator]: Completed translation [2022-12-12 21:42:14,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14 WrapperNode [2022-12-12 21:42:14,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 21:42:14,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 21:42:14,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 21:42:14,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 21:42:14,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,761 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-12-12 21:42:14,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 21:42:14,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 21:42:14,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 21:42:14,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 21:42:14,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,775 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 21:42:14,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 21:42:14,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 21:42:14,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 21:42:14,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (1/1) ... [2022-12-12 21:42:14,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:42:14,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 21:42:14,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 21:42:14,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 21:42:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 21:42:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 21:42:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 21:42:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 21:42:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 21:42:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 21:42:14,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 21:42:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 21:42:14,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 21:42:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 21:42:14,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 21:42:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 21:42:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 21:42:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 21:42:14,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 21:42:14,837 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 21:42:14,974 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 21:42:14,975 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 21:42:15,133 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 21:42:15,137 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 21:42:15,138 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 21:42:15,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:42:15 BoogieIcfgContainer [2022-12-12 21:42:15,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 21:42:15,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 21:42:15,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 21:42:15,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 21:42:15,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 09:42:14" (1/3) ... [2022-12-12 21:42:15,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be6afe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:42:15, skipping insertion in model container [2022-12-12 21:42:15,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:14" (2/3) ... [2022-12-12 21:42:15,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be6afe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:42:15, skipping insertion in model container [2022-12-12 21:42:15,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:42:15" (3/3) ... [2022-12-12 21:42:15,146 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2022-12-12 21:42:15,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 21:42:15,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 21:42:15,158 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 21:42:15,205 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 21:42:15,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2022-12-12 21:42:15,279 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2022-12-12 21:42:15,279 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:42:15,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-12 21:42:15,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2022-12-12 21:42:15,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2022-12-12 21:42:15,287 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 21:42:15,299 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2022-12-12 21:42:15,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2022-12-12 21:42:15,313 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-12-12 21:42:15,314 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:42:15,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-12 21:42:15,320 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2022-12-12 21:42:15,320 INFO L226 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-12 21:42:17,227 INFO L241 LiptonReduction]: Total number of compositions: 54 [2022-12-12 21:42:17,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 21:42:17,242 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;@27a0c31e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 21:42:17,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 21:42:17,246 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-12 21:42:17,246 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:42:17,246 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:17,247 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:17,247 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)] === [2022-12-12 21:42:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:17,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1767221015, now seen corresponding path program 1 times [2022-12-12 21:42:17,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:17,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973723127] [2022-12-12 21:42:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:17,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:17,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:17,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973723127] [2022-12-12 21:42:17,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973723127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:17,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:17,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:42:17,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443910162] [2022-12-12 21:42:17,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:17,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:42:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:17,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:42:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:42:17,674 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2022-12-12 21:42:17,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:17,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:17,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2022-12-12 21:42:17,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:17,793 INFO L130 PetriNetUnfolder]: 383/646 cut-off events. [2022-12-12 21:42:17,793 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-12 21:42:17,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 646 events. 383/646 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2968 event pairs, 199 based on Foata normal form. 16/503 useless extension candidates. Maximal degree in co-relation 1282. Up to 519 conditions per place. [2022-12-12 21:42:17,802 INFO L137 encePairwiseOnDemand]: 23/27 looper letters, 26 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2022-12-12 21:42:17,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 145 flow [2022-12-12 21:42:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:42:17,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:42:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-12-12 21:42:17,809 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7160493827160493 [2022-12-12 21:42:17,812 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2022-12-12 21:42:17,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 37 transitions, 145 flow [2022-12-12 21:42:17,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 37 transitions, 145 flow [2022-12-12 21:42:17,818 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 145 flow [2022-12-12 21:42:17,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:17,818 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:17,818 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:17,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 21:42:17,818 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)] === [2022-12-12 21:42:17,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:17,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1050723259, now seen corresponding path program 1 times [2022-12-12 21:42:17,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:17,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780000411] [2022-12-12 21:42:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:17,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:17,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:17,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780000411] [2022-12-12 21:42:17,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780000411] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:17,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:17,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:42:17,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186492463] [2022-12-12 21:42:17,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:17,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:17,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:17,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:17,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:17,995 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:17,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:17,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:17,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:17,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:18,143 INFO L130 PetriNetUnfolder]: 678/1127 cut-off events. [2022-12-12 21:42:18,143 INFO L131 PetriNetUnfolder]: For 158/164 co-relation queries the response was YES. [2022-12-12 21:42:18,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 1127 events. 678/1127 cut-off events. For 158/164 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6045 event pairs, 53 based on Foata normal form. 20/925 useless extension candidates. Maximal degree in co-relation 3083. Up to 784 conditions per place. [2022-12-12 21:42:18,151 INFO L137 encePairwiseOnDemand]: 21/27 looper letters, 58 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2022-12-12 21:42:18,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 73 transitions, 419 flow [2022-12-12 21:42:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:42:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:42:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2022-12-12 21:42:18,155 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2022-12-12 21:42:18,155 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2022-12-12 21:42:18,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 73 transitions, 419 flow [2022-12-12 21:42:18,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 73 transitions, 419 flow [2022-12-12 21:42:18,162 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 73 transitions, 419 flow [2022-12-12 21:42:18,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:18,162 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:18,163 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:18,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 21:42:18,163 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)] === [2022-12-12 21:42:18,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:18,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1787319199, now seen corresponding path program 1 times [2022-12-12 21:42:18,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:18,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664895083] [2022-12-12 21:42:18,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:18,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:18,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:18,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664895083] [2022-12-12 21:42:18,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664895083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:18,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:18,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:42:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237790587] [2022-12-12 21:42:18,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:18,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:42:18,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:42:18,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:42:18,266 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2022-12-12 21:42:18,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 73 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:18,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:18,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2022-12-12 21:42:18,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:18,356 INFO L130 PetriNetUnfolder]: 649/1086 cut-off events. [2022-12-12 21:42:18,356 INFO L131 PetriNetUnfolder]: For 502/520 co-relation queries the response was YES. [2022-12-12 21:42:18,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 1086 events. 649/1086 cut-off events. For 502/520 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5799 event pairs, 9 based on Foata normal form. 12/883 useless extension candidates. Maximal degree in co-relation 3792. Up to 743 conditions per place. [2022-12-12 21:42:18,365 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 66 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2022-12-12 21:42:18,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 83 transitions, 619 flow [2022-12-12 21:42:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:42:18,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:42:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-12-12 21:42:18,367 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2022-12-12 21:42:18,368 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2022-12-12 21:42:18,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 83 transitions, 619 flow [2022-12-12 21:42:18,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 83 transitions, 619 flow [2022-12-12 21:42:18,375 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 83 transitions, 619 flow [2022-12-12 21:42:18,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:18,375 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:18,375 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:18,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 21:42:18,375 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)] === [2022-12-12 21:42:18,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1787316657, now seen corresponding path program 1 times [2022-12-12 21:42:18,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:18,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499385177] [2022-12-12 21:42:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:18,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:18,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499385177] [2022-12-12 21:42:18,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499385177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:18,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:18,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:42:18,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143569335] [2022-12-12 21:42:18,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:18,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:18,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:18,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:18,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:18,498 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2022-12-12 21:42:18,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 83 transitions, 619 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:18,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:18,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2022-12-12 21:42:18,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:18,616 INFO L130 PetriNetUnfolder]: 769/1296 cut-off events. [2022-12-12 21:42:18,616 INFO L131 PetriNetUnfolder]: For 941/981 co-relation queries the response was YES. [2022-12-12 21:42:18,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5690 conditions, 1296 events. 769/1296 cut-off events. For 941/981 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7144 event pairs, 45 based on Foata normal form. 64/1073 useless extension candidates. Maximal degree in co-relation 5670. Up to 939 conditions per place. [2022-12-12 21:42:18,622 INFO L137 encePairwiseOnDemand]: 23/27 looper letters, 29 selfloop transitions, 3 changer transitions 50/90 dead transitions. [2022-12-12 21:42:18,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 90 transitions, 833 flow [2022-12-12 21:42:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:42:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:42:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2022-12-12 21:42:18,625 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6203703703703703 [2022-12-12 21:42:18,626 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2022-12-12 21:42:18,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 90 transitions, 833 flow [2022-12-12 21:42:18,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 40 transitions, 343 flow [2022-12-12 21:42:18,633 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 343 flow [2022-12-12 21:42:18,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:18,633 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:18,633 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:18,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 21:42:18,633 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)] === [2022-12-12 21:42:18,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash 428465653, now seen corresponding path program 1 times [2022-12-12 21:42:18,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:18,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682308191] [2022-12-12 21:42:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:18,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:18,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:18,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682308191] [2022-12-12 21:42:18,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682308191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:18,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:18,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:42:18,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846847795] [2022-12-12 21:42:18,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:18,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:42:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:18,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:42:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:42:18,742 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:18,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:18,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:18,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:18,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:18,823 INFO L130 PetriNetUnfolder]: 531/927 cut-off events. [2022-12-12 21:42:18,824 INFO L131 PetriNetUnfolder]: For 1353/1355 co-relation queries the response was YES. [2022-12-12 21:42:18,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4826 conditions, 927 events. 531/927 cut-off events. For 1353/1355 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4568 event pairs, 30 based on Foata normal form. 62/758 useless extension candidates. Maximal degree in co-relation 4803. Up to 753 conditions per place. [2022-12-12 21:42:18,828 INFO L137 encePairwiseOnDemand]: 23/27 looper letters, 30 selfloop transitions, 3 changer transitions 33/72 dead transitions. [2022-12-12 21:42:18,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 784 flow [2022-12-12 21:42:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:42:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:42:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2022-12-12 21:42:18,829 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-12 21:42:18,830 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2022-12-12 21:42:18,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 72 transitions, 784 flow [2022-12-12 21:42:18,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 39 transitions, 410 flow [2022-12-12 21:42:18,834 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 410 flow [2022-12-12 21:42:18,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:18,855 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:18,856 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:18,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 21:42:18,856 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)] === [2022-12-12 21:42:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:18,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1816924516, now seen corresponding path program 1 times [2022-12-12 21:42:18,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:18,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816781124] [2022-12-12 21:42:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:18,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:18,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:18,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816781124] [2022-12-12 21:42:18,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816781124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:18,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:18,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:42:18,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173056618] [2022-12-12 21:42:18,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:18,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:18,968 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:18,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:18,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:18,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:18,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:19,081 INFO L130 PetriNetUnfolder]: 639/1041 cut-off events. [2022-12-12 21:42:19,081 INFO L131 PetriNetUnfolder]: For 2893/2902 co-relation queries the response was YES. [2022-12-12 21:42:19,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5903 conditions, 1041 events. 639/1041 cut-off events. For 2893/2902 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4863 event pairs, 125 based on Foata normal form. 80/877 useless extension candidates. Maximal degree in co-relation 5877. Up to 772 conditions per place. [2022-12-12 21:42:19,087 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 32 selfloop transitions, 18 changer transitions 40/95 dead transitions. [2022-12-12 21:42:19,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 95 transitions, 1175 flow [2022-12-12 21:42:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:42:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:42:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2022-12-12 21:42:19,089 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6592592592592592 [2022-12-12 21:42:19,091 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2022-12-12 21:42:19,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 95 transitions, 1175 flow [2022-12-12 21:42:19,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 55 transitions, 675 flow [2022-12-12 21:42:19,100 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 675 flow [2022-12-12 21:42:19,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:19,101 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:19,101 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:19,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 21:42:19,101 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)] === [2022-12-12 21:42:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1233134182, now seen corresponding path program 1 times [2022-12-12 21:42:19,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:19,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020227062] [2022-12-12 21:42:19,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:19,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:19,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:19,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020227062] [2022-12-12 21:42:19,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020227062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:19,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:19,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:42:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134336994] [2022-12-12 21:42:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:19,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:42:19,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:19,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:42:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:42:19,193 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:19,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 675 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:19,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:19,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:19,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:19,321 INFO L130 PetriNetUnfolder]: 466/819 cut-off events. [2022-12-12 21:42:19,321 INFO L131 PetriNetUnfolder]: For 2903/2981 co-relation queries the response was YES. [2022-12-12 21:42:19,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5455 conditions, 819 events. 466/819 cut-off events. For 2903/2981 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4085 event pairs, 53 based on Foata normal form. 98/730 useless extension candidates. Maximal degree in co-relation 5426. Up to 752 conditions per place. [2022-12-12 21:42:19,326 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 27 selfloop transitions, 31 changer transitions 29/92 dead transitions. [2022-12-12 21:42:19,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 92 transitions, 1277 flow [2022-12-12 21:42:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:42:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:42:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2022-12-12 21:42:19,328 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2022-12-12 21:42:19,329 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-12-12 21:42:19,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 92 transitions, 1277 flow [2022-12-12 21:42:19,344 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 63 transitions, 873 flow [2022-12-12 21:42:19,345 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 63 transitions, 873 flow [2022-12-12 21:42:19,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:19,345 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:19,345 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:19,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 21:42:19,345 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)] === [2022-12-12 21:42:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1747130789, now seen corresponding path program 1 times [2022-12-12 21:42:19,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:19,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147140135] [2022-12-12 21:42:19,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:19,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:19,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:19,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147140135] [2022-12-12 21:42:19,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147140135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:19,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:19,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:42:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534760308] [2022-12-12 21:42:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:19,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 21:42:19,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 21:42:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 21:42:19,471 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:19,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 63 transitions, 873 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:19,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:19,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:19,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:19,566 INFO L130 PetriNetUnfolder]: 214/460 cut-off events. [2022-12-12 21:42:19,566 INFO L131 PetriNetUnfolder]: For 1967/2045 co-relation queries the response was YES. [2022-12-12 21:42:19,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3545 conditions, 460 events. 214/460 cut-off events. For 1967/2045 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2372 event pairs, 13 based on Foata normal form. 96/456 useless extension candidates. Maximal degree in co-relation 3513. Up to 417 conditions per place. [2022-12-12 21:42:19,568 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 17 selfloop transitions, 40 changer transitions 12/74 dead transitions. [2022-12-12 21:42:19,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 1157 flow [2022-12-12 21:42:19,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 21:42:19,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 21:42:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2022-12-12 21:42:19,570 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2022-12-12 21:42:19,571 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2022-12-12 21:42:19,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 74 transitions, 1157 flow [2022-12-12 21:42:19,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 62 transitions, 971 flow [2022-12-12 21:42:19,574 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 971 flow [2022-12-12 21:42:19,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:19,574 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:19,574 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:19,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 21:42:19,574 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)] === [2022-12-12 21:42:19,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1493011647, now seen corresponding path program 1 times [2022-12-12 21:42:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:19,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499175481] [2022-12-12 21:42:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:19,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:42:19,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:19,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499175481] [2022-12-12 21:42:19,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499175481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:19,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:19,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:42:19,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246294417] [2022-12-12 21:42:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:19,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:19,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:19,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:19,682 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2022-12-12 21:42:19,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 971 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:19,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:19,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2022-12-12 21:42:19,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:19,723 INFO L130 PetriNetUnfolder]: 140/286 cut-off events. [2022-12-12 21:42:19,723 INFO L131 PetriNetUnfolder]: For 1621/1659 co-relation queries the response was YES. [2022-12-12 21:42:19,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 286 events. 140/286 cut-off events. For 1621/1659 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1211 event pairs, 0 based on Foata normal form. 31/245 useless extension candidates. Maximal degree in co-relation 2359. Up to 253 conditions per place. [2022-12-12 21:42:19,724 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2022-12-12 21:42:19,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 1252 flow [2022-12-12 21:42:19,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:42:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:42:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2022-12-12 21:42:19,725 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2022-12-12 21:42:19,725 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2022-12-12 21:42:19,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 71 transitions, 1252 flow [2022-12-12 21:42:19,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 21:42:19,726 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 21:42:19,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:19,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 21:42:19,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 21:42:19,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 21:42:19,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 21:42:19,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 21:42:19,729 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:19,731 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 21:42:19,731 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 21:42:19,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 09:42:19 BasicIcfg [2022-12-12 21:42:19,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 21:42:19,734 INFO L158 Benchmark]: Toolchain (without parser) took 5337.46ms. Allocated memory was 183.5MB in the beginning and 273.7MB in the end (delta: 90.2MB). Free memory was 148.4MB in the beginning and 114.7MB in the end (delta: 33.7MB). Peak memory consumption was 124.4MB. Max. memory is 8.0GB. [2022-12-12 21:42:19,734 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 160.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 21:42:19,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.45ms. Allocated memory is still 183.5MB. Free memory was 147.9MB in the beginning and 124.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 21:42:19,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.71ms. Allocated memory is still 183.5MB. Free memory was 124.8MB in the beginning and 122.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 21:42:19,736 INFO L158 Benchmark]: Boogie Preprocessor took 15.56ms. Allocated memory is still 183.5MB. Free memory was 122.7MB in the beginning and 121.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 21:42:19,736 INFO L158 Benchmark]: RCFGBuilder took 362.60ms. Allocated memory is still 183.5MB. Free memory was 121.1MB in the beginning and 108.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 21:42:19,736 INFO L158 Benchmark]: TraceAbstraction took 4591.56ms. Allocated memory was 183.5MB in the beginning and 273.7MB in the end (delta: 90.2MB). Free memory was 107.0MB in the beginning and 114.7MB in the end (delta: -7.7MB). Peak memory consumption was 83.5MB. Max. memory is 8.0GB. [2022-12-12 21:42:19,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 160.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 320.45ms. Allocated memory is still 183.5MB. Free memory was 147.9MB in the beginning and 124.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.71ms. Allocated memory is still 183.5MB. Free memory was 124.8MB in the beginning and 122.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.56ms. Allocated memory is still 183.5MB. Free memory was 122.7MB in the beginning and 121.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 362.60ms. Allocated memory is still 183.5MB. Free memory was 121.1MB in the beginning and 108.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4591.56ms. Allocated memory was 183.5MB in the beginning and 273.7MB in the end (delta: 90.2MB). Free memory was 107.0MB in the beginning and 114.7MB in the end (delta: -7.7MB). Peak memory consumption was 83.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 80 PlacesBefore, 36 PlacesAfterwards, 71 TransitionsBefore, 27 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1267, independent: 1213, independent conditional: 1213, independent unconditional: 0, dependent: 54, dependent conditional: 54, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1267, independent: 1213, independent conditional: 0, independent unconditional: 1213, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1267, independent: 1213, independent conditional: 0, independent unconditional: 1213, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1267, independent: 1213, independent conditional: 0, independent unconditional: 1213, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 846, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 846, independent: 792, independent conditional: 0, independent unconditional: 792, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 139, independent: 41, independent conditional: 0, independent unconditional: 41, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1267, independent: 399, independent conditional: 0, independent unconditional: 399, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 846, unknown conditional: 0, unknown unconditional: 846] , Statistics on independence cache: Total cache size (in pairs): 1310, Positive cache size: 1278, Positive conditional cache size: 0, Positive unconditional cache size: 1278, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - 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, 109 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 214 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 214 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 561 IncrementalHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 7 mSDtfsCounter, 561 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=971occurred in iteration=8, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 3206 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 338 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! [2022-12-12 21:42:19,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...