/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 20:03:56,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 20:03:56,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 20:03:57,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 20:03:57,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 20:03:57,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 20:03:57,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 20:03:57,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 20:03:57,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 20:03:57,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 20:03:57,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 20:03:57,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 20:03:57,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 20:03:57,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 20:03:57,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 20:03:57,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 20:03:57,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 20:03:57,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 20:03:57,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 20:03:57,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 20:03:57,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 20:03:57,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 20:03:57,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 20:03:57,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 20:03:57,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 20:03:57,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 20:03:57,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 20:03:57,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 20:03:57,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 20:03:57,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 20:03:57,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 20:03:57,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 20:03:57,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 20:03:57,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 20:03:57,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 20:03:57,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 20:03:57,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 20:03:57,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 20:03:57,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 20:03:57,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 20:03:57,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 20:03:57,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 20:03:57,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 20:03:57,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 20:03:57,048 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 20:03:57,048 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 20:03:57,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 20:03:57,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 20:03:57,049 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 20:03:57,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 20:03:57,049 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 20:03:57,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 20:03:57,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 20:03:57,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 20:03:57,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 20:03:57,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 20:03:57,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 20:03:57,050 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 20:03:57,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 20:03:57,050 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 20:03:57,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 20:03:57,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 20:03:57,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 20:03:57,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 20:03:57,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 20:03:57,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:03:57,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 20:03:57,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 20:03:57,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 20:03:57,052 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 20:03:57,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 20:03:57,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 20:03:57,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 20:03:57,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 20:03:57,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 20:03:57,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 20:03:57,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 20:03:57,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 20:03:57,295 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 20:03:57,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2022-12-11 20:03:58,313 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 20:03:58,430 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 20:03:58,430 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2022-12-11 20:03:58,436 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5296be085/62880d6d93524425b22f7fdb39e0f9ba/FLAG8d493a49d [2022-12-11 20:03:58,447 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5296be085/62880d6d93524425b22f7fdb39e0f9ba [2022-12-11 20:03:58,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 20:03:58,452 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 20:03:58,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 20:03:58,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 20:03:58,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 20:03:58,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d5bf76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58, skipping insertion in model container [2022-12-11 20:03:58,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 20:03:58,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 20:03:58,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,618 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-12-11 20:03:58,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:03:58,630 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 20:03:58,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,643 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,643 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,643 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,644 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,644 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,644 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:03:58,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:03:58,651 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-12-11 20:03:58,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:03:58,662 INFO L208 MainTranslator]: Completed translation [2022-12-11 20:03:58,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58 WrapperNode [2022-12-11 20:03:58,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 20:03:58,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 20:03:58,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 20:03:58,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 20:03:58,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,719 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 267 [2022-12-11 20:03:58,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 20:03:58,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 20:03:58,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 20:03:58,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 20:03:58,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,752 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 20:03:58,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 20:03:58,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 20:03:58,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 20:03:58,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (1/1) ... [2022-12-11 20:03:58,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:03:58,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:03:58,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 20:03:58,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 20:03:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 20:03:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 20:03:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 20:03:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 20:03:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 20:03:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 20:03:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 20:03:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 20:03:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 20:03:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 20:03:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-11 20:03:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-11 20:03:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 20:03:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 20:03:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 20:03:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 20:03:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 20:03:58,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 20:03:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 20:03:58,862 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 20:03:58,982 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 20:03:58,983 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 20:03:59,264 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 20:03:59,358 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 20:03:59,359 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-11 20:03:59,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:03:59 BoogieIcfgContainer [2022-12-11 20:03:59,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 20:03:59,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 20:03:59,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 20:03:59,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 20:03:59,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 08:03:58" (1/3) ... [2022-12-11 20:03:59,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485d9e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:03:59, skipping insertion in model container [2022-12-11 20:03:59,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:03:58" (2/3) ... [2022-12-11 20:03:59,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485d9e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:03:59, skipping insertion in model container [2022-12-11 20:03:59,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:03:59" (3/3) ... [2022-12-11 20:03:59,370 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2022-12-11 20:03:59,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 20:03:59,383 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 20:03:59,383 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 20:03:59,449 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-11 20:03:59,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 220 transitions, 472 flow [2022-12-11 20:03:59,590 INFO L130 PetriNetUnfolder]: 18/216 cut-off events. [2022-12-11 20:03:59,590 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-11 20:03:59,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 216 events. 18/216 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2022-12-11 20:03:59,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 220 transitions, 472 flow [2022-12-11 20:03:59,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 204 transitions, 432 flow [2022-12-11 20:03:59,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 20:03:59,619 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;@b095c89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 20:03:59,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-11 20:03:59,676 INFO L130 PetriNetUnfolder]: 18/203 cut-off events. [2022-12-11 20:03:59,676 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-11 20:03:59,676 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:03:59,677 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:03:59,677 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 2 more)] === [2022-12-11 20:03:59,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:03:59,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1343064866, now seen corresponding path program 1 times [2022-12-11 20:03:59,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:03:59,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913464890] [2022-12-11 20:03:59,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:03:59,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:03:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:04:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:04:00,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:04:00,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913464890] [2022-12-11 20:04:00,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913464890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:04:00,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:04:00,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 20:04:00,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100929024] [2022-12-11 20:04:00,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:04:00,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 20:04:00,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:04:00,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 20:04:00,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 20:04:00,196 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 220 [2022-12-11 20:04:00,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 204 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:00,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:04:00,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 220 [2022-12-11 20:04:00,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:04:00,518 INFO L130 PetriNetUnfolder]: 692/1417 cut-off events. [2022-12-11 20:04:00,521 INFO L131 PetriNetUnfolder]: For 395/396 co-relation queries the response was YES. [2022-12-11 20:04:00,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 1417 events. 692/1417 cut-off events. For 395/396 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7700 event pairs, 45 based on Foata normal form. 206/1547 useless extension candidates. Maximal degree in co-relation 2361. Up to 335 conditions per place. [2022-12-11 20:04:00,537 INFO L137 encePairwiseOnDemand]: 203/220 looper letters, 51 selfloop transitions, 5 changer transitions 7/225 dead transitions. [2022-12-11 20:04:00,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 225 transitions, 607 flow [2022-12-11 20:04:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 20:04:00,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 20:04:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 998 transitions. [2022-12-11 20:04:00,551 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9072727272727272 [2022-12-11 20:04:00,552 INFO L175 Difference]: Start difference. First operand has 199 places, 204 transitions, 432 flow. Second operand 5 states and 998 transitions. [2022-12-11 20:04:00,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 225 transitions, 607 flow [2022-12-11 20:04:00,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 225 transitions, 577 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-11 20:04:00,561 INFO L231 Difference]: Finished difference. Result has 198 places, 188 transitions, 409 flow [2022-12-11 20:04:00,562 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=198, PETRI_TRANSITIONS=188} [2022-12-11 20:04:00,567 INFO L295 CegarLoopForPetriNet]: 199 programPoint places, -1 predicate places. [2022-12-11 20:04:00,568 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 188 transitions, 409 flow [2022-12-11 20:04:00,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:00,568 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:04:00,568 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:04:00,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 20:04:00,569 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 2 more)] === [2022-12-11 20:04:00,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:04:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1188952638, now seen corresponding path program 2 times [2022-12-11 20:04:00,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:04:00,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155414067] [2022-12-11 20:04:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:04:00,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:04:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:04:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:04:00,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:04:00,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155414067] [2022-12-11 20:04:00,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155414067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:04:00,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:04:00,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 20:04:00,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700114352] [2022-12-11 20:04:00,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:04:00,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 20:04:00,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:04:00,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 20:04:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 20:04:00,821 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 220 [2022-12-11 20:04:00,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 188 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:00,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:04:00,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 220 [2022-12-11 20:04:00,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:04:01,053 INFO L130 PetriNetUnfolder]: 827/1674 cut-off events. [2022-12-11 20:04:01,053 INFO L131 PetriNetUnfolder]: For 516/517 co-relation queries the response was YES. [2022-12-11 20:04:01,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 1674 events. 827/1674 cut-off events. For 516/517 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9897 event pairs, 91 based on Foata normal form. 0/1607 useless extension candidates. Maximal degree in co-relation 2095. Up to 437 conditions per place. [2022-12-11 20:04:01,065 INFO L137 encePairwiseOnDemand]: 215/220 looper letters, 50 selfloop transitions, 7 changer transitions 0/219 dead transitions. [2022-12-11 20:04:01,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 219 transitions, 612 flow [2022-12-11 20:04:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 20:04:01,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 20:04:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 975 transitions. [2022-12-11 20:04:01,069 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8863636363636364 [2022-12-11 20:04:01,069 INFO L175 Difference]: Start difference. First operand has 198 places, 188 transitions, 409 flow. Second operand 5 states and 975 transitions. [2022-12-11 20:04:01,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 219 transitions, 612 flow [2022-12-11 20:04:01,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 219 transitions, 607 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 20:04:01,076 INFO L231 Difference]: Finished difference. Result has 197 places, 192 transitions, 452 flow [2022-12-11 20:04:01,076 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=197, PETRI_TRANSITIONS=192} [2022-12-11 20:04:01,077 INFO L295 CegarLoopForPetriNet]: 199 programPoint places, -2 predicate places. [2022-12-11 20:04:01,077 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 192 transitions, 452 flow [2022-12-11 20:04:01,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:01,078 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:04:01,078 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:04:01,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 20:04:01,080 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 2 more)] === [2022-12-11 20:04:01,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:04:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2089991226, now seen corresponding path program 3 times [2022-12-11 20:04:01,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:04:01,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808577951] [2022-12-11 20:04:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:04:01,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:04:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:04:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:04:01,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:04:01,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808577951] [2022-12-11 20:04:01,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808577951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:04:01,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:04:01,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 20:04:01,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259769609] [2022-12-11 20:04:01,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:04:01,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 20:04:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:04:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 20:04:01,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-11 20:04:01,560 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 220 [2022-12-11 20:04:01,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 192 transitions, 452 flow. Second operand has 8 states, 8 states have (on average 150.75) internal successors, (1206), 8 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:01,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:04:01,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 220 [2022-12-11 20:04:01,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:04:02,110 INFO L130 PetriNetUnfolder]: 2078/4203 cut-off events. [2022-12-11 20:04:02,110 INFO L131 PetriNetUnfolder]: For 1960/1960 co-relation queries the response was YES. [2022-12-11 20:04:02,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9124 conditions, 4203 events. 2078/4203 cut-off events. For 1960/1960 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 32085 event pairs, 370 based on Foata normal form. 45/4157 useless extension candidates. Maximal degree in co-relation 5145. Up to 959 conditions per place. [2022-12-11 20:04:02,166 INFO L137 encePairwiseOnDemand]: 209/220 looper letters, 96 selfloop transitions, 15 changer transitions 0/241 dead transitions. [2022-12-11 20:04:02,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 241 transitions, 827 flow [2022-12-11 20:04:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 20:04:02,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 20:04:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1696 transitions. [2022-12-11 20:04:02,169 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7008264462809918 [2022-12-11 20:04:02,169 INFO L175 Difference]: Start difference. First operand has 197 places, 192 transitions, 452 flow. Second operand 11 states and 1696 transitions. [2022-12-11 20:04:02,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 241 transitions, 827 flow [2022-12-11 20:04:02,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 241 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 20:04:02,177 INFO L231 Difference]: Finished difference. Result has 210 places, 199 transitions, 543 flow [2022-12-11 20:04:02,177 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=543, PETRI_PLACES=210, PETRI_TRANSITIONS=199} [2022-12-11 20:04:02,177 INFO L295 CegarLoopForPetriNet]: 199 programPoint places, 11 predicate places. [2022-12-11 20:04:02,177 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 199 transitions, 543 flow [2022-12-11 20:04:02,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 150.75) internal successors, (1206), 8 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:02,178 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:04:02,178 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:04:02,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 20:04:02,179 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 2 more)] === [2022-12-11 20:04:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:04:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash -37262963, now seen corresponding path program 1 times [2022-12-11 20:04:02,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:04:02,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149202917] [2022-12-11 20:04:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:04:02,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:04:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:04:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:04:02,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:04:02,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149202917] [2022-12-11 20:04:02,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149202917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:04:02,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:04:02,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 20:04:02,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677139131] [2022-12-11 20:04:02,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:04:02,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:04:02,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:04:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:04:02,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 20:04:02,331 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 220 [2022-12-11 20:04:02,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 199 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:02,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:04:02,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 220 [2022-12-11 20:04:02,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:04:02,506 INFO L130 PetriNetUnfolder]: 363/1222 cut-off events. [2022-12-11 20:04:02,506 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2022-12-11 20:04:02,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2277 conditions, 1222 events. 363/1222 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7802 event pairs, 100 based on Foata normal form. 18/1170 useless extension candidates. Maximal degree in co-relation 2126. Up to 384 conditions per place. [2022-12-11 20:04:02,516 INFO L137 encePairwiseOnDemand]: 215/220 looper letters, 21 selfloop transitions, 4 changer transitions 0/200 dead transitions. [2022-12-11 20:04:02,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 200 transitions, 567 flow [2022-12-11 20:04:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:04:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:04:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2022-12-11 20:04:02,517 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8939393939393939 [2022-12-11 20:04:02,517 INFO L175 Difference]: Start difference. First operand has 210 places, 199 transitions, 543 flow. Second operand 3 states and 590 transitions. [2022-12-11 20:04:02,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 200 transitions, 567 flow [2022-12-11 20:04:02,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 200 transitions, 543 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-12-11 20:04:02,524 INFO L231 Difference]: Finished difference. Result has 203 places, 195 transitions, 496 flow [2022-12-11 20:04:02,524 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=496, PETRI_PLACES=203, PETRI_TRANSITIONS=195} [2022-12-11 20:04:02,525 INFO L295 CegarLoopForPetriNet]: 199 programPoint places, 4 predicate places. [2022-12-11 20:04:02,525 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 195 transitions, 496 flow [2022-12-11 20:04:02,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:02,526 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:04:02,526 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:04:02,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 20:04:02,526 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 2 more)] === [2022-12-11 20:04:02,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:04:02,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1456249735, now seen corresponding path program 1 times [2022-12-11 20:04:02,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:04:02,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826517677] [2022-12-11 20:04:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:04:02,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:04:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:04:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:04:02,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:04:02,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826517677] [2022-12-11 20:04:02,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826517677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:04:02,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:04:02,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 20:04:02,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684471021] [2022-12-11 20:04:02,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:04:02,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 20:04:02,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:04:02,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 20:04:02,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:04:02,688 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 220 [2022-12-11 20:04:02,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 195 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 173.83333333333334) internal successors, (1043), 6 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:02,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:04:02,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 220 [2022-12-11 20:04:02,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:04:02,884 INFO L130 PetriNetUnfolder]: 393/1337 cut-off events. [2022-12-11 20:04:02,885 INFO L131 PetriNetUnfolder]: For 508/511 co-relation queries the response was YES. [2022-12-11 20:04:02,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2548 conditions, 1337 events. 393/1337 cut-off events. For 508/511 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8356 event pairs, 166 based on Foata normal form. 13/1254 useless extension candidates. Maximal degree in co-relation 1853. Up to 434 conditions per place. [2022-12-11 20:04:02,894 INFO L137 encePairwiseOnDemand]: 212/220 looper letters, 37 selfloop transitions, 6 changer transitions 8/207 dead transitions. [2022-12-11 20:04:02,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 207 transitions, 627 flow [2022-12-11 20:04:02,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 20:04:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 20:04:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1234 transitions. [2022-12-11 20:04:02,896 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8012987012987013 [2022-12-11 20:04:02,896 INFO L175 Difference]: Start difference. First operand has 203 places, 195 transitions, 496 flow. Second operand 7 states and 1234 transitions. [2022-12-11 20:04:02,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 207 transitions, 627 flow [2022-12-11 20:04:02,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 207 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 20:04:02,900 INFO L231 Difference]: Finished difference. Result has 210 places, 196 transitions, 514 flow [2022-12-11 20:04:02,901 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=514, PETRI_PLACES=210, PETRI_TRANSITIONS=196} [2022-12-11 20:04:02,903 INFO L295 CegarLoopForPetriNet]: 199 programPoint places, 11 predicate places. [2022-12-11 20:04:02,903 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 196 transitions, 514 flow [2022-12-11 20:04:02,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.83333333333334) internal successors, (1043), 6 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:02,903 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:04:02,903 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:04:02,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 20:04:02,904 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 2 more)] === [2022-12-11 20:04:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:04:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash -830625412, now seen corresponding path program 1 times [2022-12-11 20:04:02,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:04:02,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830958403] [2022-12-11 20:04:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:04:02,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:04:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:04:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 20:04:03,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:04:03,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830958403] [2022-12-11 20:04:03,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830958403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:04:03,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:04:03,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 20:04:03,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198256898] [2022-12-11 20:04:03,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:04:03,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:04:03,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:04:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:04:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 20:04:03,095 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 220 [2022-12-11 20:04:03,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 196 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:03,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:04:03,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 220 [2022-12-11 20:04:03,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:04:03,190 INFO L130 PetriNetUnfolder]: 206/817 cut-off events. [2022-12-11 20:04:03,190 INFO L131 PetriNetUnfolder]: For 343/345 co-relation queries the response was YES. [2022-12-11 20:04:03,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 817 events. 206/817 cut-off events. For 343/345 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4275 event pairs, 77 based on Foata normal form. 6/791 useless extension candidates. Maximal degree in co-relation 1433. Up to 255 conditions per place. [2022-12-11 20:04:03,194 INFO L137 encePairwiseOnDemand]: 217/220 looper letters, 19 selfloop transitions, 2 changer transitions 1/201 dead transitions. [2022-12-11 20:04:03,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 201 transitions, 572 flow [2022-12-11 20:04:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:04:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:04:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2022-12-11 20:04:03,196 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9015151515151515 [2022-12-11 20:04:03,196 INFO L175 Difference]: Start difference. First operand has 210 places, 196 transitions, 514 flow. Second operand 3 states and 595 transitions. [2022-12-11 20:04:03,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 201 transitions, 572 flow [2022-12-11 20:04:03,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 201 transitions, 560 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-11 20:04:03,200 INFO L231 Difference]: Finished difference. Result has 207 places, 197 transitions, 514 flow [2022-12-11 20:04:03,200 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=207, PETRI_TRANSITIONS=197} [2022-12-11 20:04:03,202 INFO L295 CegarLoopForPetriNet]: 199 programPoint places, 8 predicate places. [2022-12-11 20:04:03,203 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 197 transitions, 514 flow [2022-12-11 20:04:03,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:03,203 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:04:03,203 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:04:03,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 20:04:03,203 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 2 more)] === [2022-12-11 20:04:03,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:04:03,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1104946646, now seen corresponding path program 1 times [2022-12-11 20:04:03,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:04:03,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960685311] [2022-12-11 20:04:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:04:03,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:04:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:04:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-11 20:04:03,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:04:03,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960685311] [2022-12-11 20:04:03,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960685311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:04:03,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:04:03,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 20:04:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050539192] [2022-12-11 20:04:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:04:03,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 20:04:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:04:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 20:04:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:04:03,378 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 220 [2022-12-11 20:04:03,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 197 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 174.66666666666666) internal successors, (1048), 6 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:03,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:04:03,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 220 [2022-12-11 20:04:03,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:04:03,544 INFO L130 PetriNetUnfolder]: 214/917 cut-off events. [2022-12-11 20:04:03,544 INFO L131 PetriNetUnfolder]: For 424/439 co-relation queries the response was YES. [2022-12-11 20:04:03,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 917 events. 214/917 cut-off events. For 424/439 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4626 event pairs, 80 based on Foata normal form. 4/872 useless extension candidates. Maximal degree in co-relation 1483. Up to 273 conditions per place. [2022-12-11 20:04:03,549 INFO L137 encePairwiseOnDemand]: 210/220 looper letters, 37 selfloop transitions, 8 changer transitions 19/220 dead transitions. [2022-12-11 20:04:03,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 220 transitions, 701 flow [2022-12-11 20:04:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:04:03,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:04:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1582 transitions. [2022-12-11 20:04:03,552 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.798989898989899 [2022-12-11 20:04:03,552 INFO L175 Difference]: Start difference. First operand has 207 places, 197 transitions, 514 flow. Second operand 9 states and 1582 transitions. [2022-12-11 20:04:03,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 220 transitions, 701 flow [2022-12-11 20:04:03,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 220 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 20:04:03,559 INFO L231 Difference]: Finished difference. Result has 216 places, 198 transitions, 540 flow [2022-12-11 20:04:03,560 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=540, PETRI_PLACES=216, PETRI_TRANSITIONS=198} [2022-12-11 20:04:03,560 INFO L295 CegarLoopForPetriNet]: 199 programPoint places, 17 predicate places. [2022-12-11 20:04:03,560 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 198 transitions, 540 flow [2022-12-11 20:04:03,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.66666666666666) internal successors, (1048), 6 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:04:03,561 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:04:03,561 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:04:03,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 20:04:03,562 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 2 more)] === [2022-12-11 20:04:03,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:04:03,562 INFO L85 PathProgramCache]: Analyzing trace with hash 638460691, now seen corresponding path program 1 times [2022-12-11 20:04:03,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:04:03,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369222612] [2022-12-11 20:04:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:04:03,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:04:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:04:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:04:08,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:04:08,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369222612] [2022-12-11 20:04:08,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369222612] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:04:08,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141595113] [2022-12-11 20:04:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:04:08,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:04:08,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:04:08,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:04:08,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 20:04:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:04:08,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 81 conjunts are in the unsatisfiable core [2022-12-11 20:04:08,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:04:11,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-11 20:04:11,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 20:04:11,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 20:04:12,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 20:04:12,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 20:04:13,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 20:04:13,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2022-12-11 20:04:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:04:13,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:04:16,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 20:04:16,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 108 [2022-12-11 20:04:16,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 20:04:16,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 119030 treesize of output 114954 [2022-12-11 20:04:17,162 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 20:04:17,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114854 treesize of output 108678 [2022-12-11 20:04:17,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 20:04:17,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 108590 treesize of output 83622 [2022-12-11 20:04:17,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 20:04:17,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83534 treesize of output 80490 [2022-12-11 20:04:18,174 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 20:04:18,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 80402 treesize of output 67962 [2022-12-11 20:08:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:08:46,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141595113] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:08:46,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:08:46,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 47, 37] total 121 [2022-12-11 20:08:46,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702026848] [2022-12-11 20:08:46,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:08:46,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-12-11 20:08:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:08:46,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-12-11 20:08:46,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1802, Invalid=12612, Unknown=106, NotChecked=0, Total=14520 [2022-12-11 20:08:46,027 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 220 [2022-12-11 20:08:46,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 198 transitions, 540 flow. Second operand has 121 states, 121 states have (on average 94.31404958677686) internal successors, (11412), 121 states have internal predecessors, (11412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:08:46,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:08:46,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 220 [2022-12-11 20:08:46,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:09:43,919 WARN L233 SmtUtils]: Spent 50.55s on a formula simplification. DAG size of input: 214 DAG size of output: 213 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 20:10:17,499 WARN L233 SmtUtils]: Spent 33.39s on a formula simplification. DAG size of input: 206 DAG size of output: 205 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 20:10:25,339 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 208 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 20:12:03,046 WARN L233 SmtUtils]: Spent 14.12s on a formula simplification. DAG size of input: 225 DAG size of output: 210 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 20:12:14,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:12:16,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:12:18,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:12:44,011 WARN L233 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 224 DAG size of output: 210 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 20:12:56,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:13:09,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:13:11,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:13:48,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:13:50,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:14:27,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:14:29,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:14:31,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:14:32,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:14:50,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-11 20:15:18,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:17:26,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-11 20:17:57,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] Received shutdown request... [2022-12-11 20:17:59,037 WARN L249 SmtUtils]: Removed 8 from assertion stack [2022-12-11 20:17:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 497 states. [2022-12-11 20:17:59,039 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-11 20:17:59,044 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 20:17:59,044 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 20:17:59,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 20:17:59,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:17:59,240 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 49 for 84ms.. [2022-12-11 20:17:59,241 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-11 20:17:59,241 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-11 20:17:59,241 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-11 20:17:59,242 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-11 20:17:59,242 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-12-11 20:17:59,252 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 20:17:59,252 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 20:17:59,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 08:17:59 BasicIcfg [2022-12-11 20:17:59,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 20:17:59,255 INFO L158 Benchmark]: Toolchain (without parser) took 840803.33ms. Allocated memory was 180.4MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 145.1MB in the beginning and 249.1MB in the end (delta: -104.0MB). Peak memory consumption was 914.4MB. Max. memory is 8.0GB. [2022-12-11 20:17:59,255 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory was 157.9MB in the beginning and 157.8MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 20:17:59,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.89ms. Allocated memory is still 180.4MB. Free memory was 145.1MB in the beginning and 129.9MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-11 20:17:59,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.45ms. Allocated memory is still 180.4MB. Free memory was 129.9MB in the beginning and 127.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:17:59,255 INFO L158 Benchmark]: Boogie Preprocessor took 43.41ms. Allocated memory is still 180.4MB. Free memory was 127.8MB in the beginning and 125.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:17:59,256 INFO L158 Benchmark]: RCFGBuilder took 599.20ms. Allocated memory is still 180.4MB. Free memory was 125.7MB in the beginning and 94.3MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-12-11 20:17:59,256 INFO L158 Benchmark]: TraceAbstraction took 839888.70ms. Allocated memory was 180.4MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 93.2MB in the beginning and 249.1MB in the end (delta: -155.9MB). Peak memory consumption was 863.0MB. Max. memory is 8.0GB. [2022-12-11 20:17:59,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory was 157.9MB in the beginning and 157.8MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 210.89ms. Allocated memory is still 180.4MB. Free memory was 145.1MB in the beginning and 129.9MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.45ms. Allocated memory is still 180.4MB. Free memory was 129.9MB in the beginning and 127.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.41ms. Allocated memory is still 180.4MB. Free memory was 127.8MB in the beginning and 125.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 599.20ms. Allocated memory is still 180.4MB. Free memory was 125.7MB in the beginning and 94.3MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 839888.70ms. Allocated memory was 180.4MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 93.2MB in the beginning and 249.1MB in the end (delta: -155.9MB). Peak memory consumption was 863.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 49 for 84ms.. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 49 for 84ms.. - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 49 for 84ms.. - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 49 for 84ms.. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 49 for 84ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 241 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 839.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 555.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1255 mSolverCounterUnknown, 17005 SdHoareTripleChecker+Valid, 100.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17005 mSDsluCounter, 7449 SdHoareTripleChecker+Invalid, 95.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7239 mSDsCounter, 2585 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23330 IncrementalHoareTripleChecker+Invalid, 27170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2585 mSolverCounterUnsat, 210 mSDtfsCounter, 23330 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 1255 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 949 GetRequests, 305 SyntacticMatches, 2 SemanticMatches, 641 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148609 ImplicationChecksByTransitivity, 445.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=543occurred in iteration=3, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 283.6s InterpolantComputationTime, 1498 NumberOfCodeBlocks, 1498 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1672 ConstructedInterpolants, 47 QuantifiedInterpolants, 24110 SizeOfPredicates, 53 NumberOfNonLiveVariables, 476 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 13/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2022-12-11 20:17:59,490 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-12-11 20:17:59,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 !ENTRY org.eclipse.osgi 4 0 2022-12-11 20:17:59.579 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5296be085/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438)