/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 21:04:26,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 21:04:26,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 21:04:26,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 21:04:26,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 21:04:26,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 21:04:26,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 21:04:26,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 21:04:26,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 21:04:26,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 21:04:26,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 21:04:26,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 21:04:26,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 21:04:26,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 21:04:26,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 21:04:26,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 21:04:26,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 21:04:26,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 21:04:26,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 21:04:26,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 21:04:26,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 21:04:26,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 21:04:26,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 21:04:26,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 21:04:26,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 21:04:26,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 21:04:26,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 21:04:26,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 21:04:26,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 21:04:26,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 21:04:26,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 21:04:26,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 21:04:26,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 21:04:26,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 21:04:26,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 21:04:26,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 21:04:26,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 21:04:26,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 21:04:26,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 21:04:26,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 21:04:26,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 21:04:26,092 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 21:04:26,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 21:04:26,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 21:04:26,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 21:04:26,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 21:04:26,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 21:04:26,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 21:04:26,110 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 21:04:26,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 21:04:26,110 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 21:04:26,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 21:04:26,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 21:04:26,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 21:04:26,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 21:04:26,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 21:04:26,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 21:04:26,111 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 21:04:26,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 21:04:26,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 21:04:26,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 21:04:26,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 21:04:26,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 21:04:26,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 21:04:26,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 21:04:26,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 21:04:26,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 21:04:26,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 21:04:26,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 21:04:26,118 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 21:04:26,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 21:04:26,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 21:04:26,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 21:04:26,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 21:04:26,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 21:04:26,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 21:04:26,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 21:04:26,377 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 21:04:26,378 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 21:04:26,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2022-12-11 21:04:27,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 21:04:27,503 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 21:04:27,504 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2022-12-11 21:04:27,518 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb8b37b8/20e6dca3c13b4fcd8e0b18e201bb8981/FLAG91d9925db [2022-12-11 21:04:27,534 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb8b37b8/20e6dca3c13b4fcd8e0b18e201bb8981 [2022-12-11 21:04:27,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 21:04:27,537 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 21:04:27,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 21:04:27,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 21:04:27,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 21:04:27,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:27,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50178d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27, skipping insertion in model container [2022-12-11 21:04:27,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:27,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 21:04:27,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 21:04:27,728 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i[945,958] [2022-12-11 21:04:27,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 21:04:27,889 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 21:04:27,900 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i[945,958] [2022-12-11 21:04:27,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,933 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,933 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:04:27,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:04:27,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 21:04:27,971 INFO L208 MainTranslator]: Completed translation [2022-12-11 21:04:27,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27 WrapperNode [2022-12-11 21:04:27,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 21:04:27,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 21:04:27,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 21:04:27,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 21:04:27,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,023 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-12-11 21:04:28,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 21:04:28,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 21:04:28,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 21:04:28,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 21:04:28,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,039 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 21:04:28,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 21:04:28,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 21:04:28,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 21:04:28,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (1/1) ... [2022-12-11 21:04:28,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 21:04:28,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:04:28,068 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 21:04:28,075 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 21:04:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 21:04:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 21:04:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 21:04:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 21:04:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 21:04:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-11 21:04:28,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-11 21:04:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-11 21:04:28,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-11 21:04:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-11 21:04:28,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-11 21:04:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 21:04:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 21:04:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 21:04:28,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 21:04:28,107 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 21:04:28,220 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 21:04:28,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 21:04:28,348 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 21:04:28,354 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 21:04:28,354 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-11 21:04:28,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 09:04:28 BoogieIcfgContainer [2022-12-11 21:04:28,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 21:04:28,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 21:04:28,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 21:04:28,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 21:04:28,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 09:04:27" (1/3) ... [2022-12-11 21:04:28,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0d27cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 09:04:28, skipping insertion in model container [2022-12-11 21:04:28,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:04:27" (2/3) ... [2022-12-11 21:04:28,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0d27cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 09:04:28, skipping insertion in model container [2022-12-11 21:04:28,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 09:04:28" (3/3) ... [2022-12-11 21:04:28,368 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2022-12-11 21:04:28,398 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 21:04:28,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 21:04:28,398 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 21:04:28,480 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 21:04:28,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2022-12-11 21:04:28,563 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2022-12-11 21:04:28,564 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 21:04:28,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-11 21:04:28,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2022-12-11 21:04:28,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2022-12-11 21:04:28,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 21:04:28,591 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;@b04cfec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 21:04:28,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 21:04:28,619 INFO L130 PetriNetUnfolder]: 1/67 cut-off events. [2022-12-11 21:04:28,620 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 21:04:28,620 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:04:28,621 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] [2022-12-11 21:04:28,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:04:28,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:04:28,634 INFO L85 PathProgramCache]: Analyzing trace with hash 890483556, now seen corresponding path program 1 times [2022-12-11 21:04:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:04:28,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032240520] [2022-12-11 21:04:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:04:28,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:04:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:04:29,298 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 21:04:29,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:04:29,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032240520] [2022-12-11 21:04:29,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032240520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:04:29,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:04:29,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 21:04:29,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661323449] [2022-12-11 21:04:29,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:04:29,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 21:04:29,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:04:29,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 21:04:29,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 21:04:29,333 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-12-11 21:04:29,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 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 21:04:29,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:04:29,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-12-11 21:04:29,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:04:29,664 INFO L130 PetriNetUnfolder]: 178/530 cut-off events. [2022-12-11 21:04:29,664 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-11 21:04:29,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 530 events. 178/530 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2954 event pairs, 26 based on Foata normal form. 21/533 useless extension candidates. Maximal degree in co-relation 844. Up to 117 conditions per place. [2022-12-11 21:04:29,672 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 19 selfloop transitions, 5 changer transitions 35/110 dead transitions. [2022-12-11 21:04:29,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 110 transitions, 347 flow [2022-12-11 21:04:29,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 21:04:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 21:04:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 884 transitions. [2022-12-11 21:04:29,688 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8192771084337349 [2022-12-11 21:04:29,692 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2022-12-11 21:04:29,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 110 transitions, 347 flow [2022-12-11 21:04:29,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 75 transitions, 207 flow [2022-12-11 21:04:29,696 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 207 flow [2022-12-11 21:04:29,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 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 21:04:29,697 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:04:29,697 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] [2022-12-11 21:04:29,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 21:04:29,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:04:29,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:04:29,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1242569285, now seen corresponding path program 1 times [2022-12-11 21:04:29,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:04:29,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98419969] [2022-12-11 21:04:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:04:29,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:04:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:04:29,941 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 21:04:29,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:04:29,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98419969] [2022-12-11 21:04:29,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98419969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:04:29,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:04:29,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 21:04:29,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181226370] [2022-12-11 21:04:29,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:04:29,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 21:04:29,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:04:29,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 21:04:29,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 21:04:29,946 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-12-11 21:04:29,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 207 flow. Second operand has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 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 21:04:29,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:04:29,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-12-11 21:04:29,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:04:30,195 INFO L130 PetriNetUnfolder]: 99/424 cut-off events. [2022-12-11 21:04:30,195 INFO L131 PetriNetUnfolder]: For 41/87 co-relation queries the response was YES. [2022-12-11 21:04:30,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 424 events. 99/424 cut-off events. For 41/87 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2304 event pairs, 15 based on Foata normal form. 14/429 useless extension candidates. Maximal degree in co-relation 829. Up to 141 conditions per place. [2022-12-11 21:04:30,200 INFO L137 encePairwiseOnDemand]: 72/83 looper letters, 21 selfloop transitions, 13 changer transitions 34/119 dead transitions. [2022-12-11 21:04:30,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 119 transitions, 528 flow [2022-12-11 21:04:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 21:04:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 21:04:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 886 transitions. [2022-12-11 21:04:30,209 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8211306765523633 [2022-12-11 21:04:30,210 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2022-12-11 21:04:30,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 119 transitions, 528 flow [2022-12-11 21:04:30,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 85 transitions, 324 flow [2022-12-11 21:04:30,214 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 324 flow [2022-12-11 21:04:30,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 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 21:04:30,214 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:04:30,214 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] [2022-12-11 21:04:30,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 21:04:30,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:04:30,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:04:30,215 INFO L85 PathProgramCache]: Analyzing trace with hash -637236572, now seen corresponding path program 1 times [2022-12-11 21:04:30,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:04:30,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408067538] [2022-12-11 21:04:30,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:04:30,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:04:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:04:30,434 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 21:04:30,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:04:30,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408067538] [2022-12-11 21:04:30,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408067538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:04:30,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:04:30,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 21:04:30,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168329050] [2022-12-11 21:04:30,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:04:30,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 21:04:30,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:04:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 21:04:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 21:04:30,436 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 83 [2022-12-11 21:04:30,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 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 21:04:30,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:04:30,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 83 [2022-12-11 21:04:30,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:04:30,680 INFO L130 PetriNetUnfolder]: 461/1215 cut-off events. [2022-12-11 21:04:30,680 INFO L131 PetriNetUnfolder]: For 157/239 co-relation queries the response was YES. [2022-12-11 21:04:30,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 1215 events. 461/1215 cut-off events. For 157/239 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8893 event pairs, 29 based on Foata normal form. 2/1137 useless extension candidates. Maximal degree in co-relation 2418. Up to 306 conditions per place. [2022-12-11 21:04:30,688 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 33 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2022-12-11 21:04:30,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 511 flow [2022-12-11 21:04:30,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 21:04:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 21:04:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 708 transitions. [2022-12-11 21:04:30,690 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8530120481927711 [2022-12-11 21:04:30,691 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2022-12-11 21:04:30,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 118 transitions, 511 flow [2022-12-11 21:04:30,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 118 transitions, 511 flow [2022-12-11 21:04:30,695 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 118 transitions, 511 flow [2022-12-11 21:04:30,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 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 21:04:30,696 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:04:30,696 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] [2022-12-11 21:04:30,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 21:04:30,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:04:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:04:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash 739465960, now seen corresponding path program 1 times [2022-12-11 21:04:30,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:04:30,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623079234] [2022-12-11 21:04:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:04:30,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:04:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:04:30,860 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 21:04:30,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:04:30,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623079234] [2022-12-11 21:04:30,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623079234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:04:30,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:04:30,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 21:04:30,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555540175] [2022-12-11 21:04:30,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:04:30,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 21:04:30,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:04:30,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 21:04:30,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 21:04:30,864 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 83 [2022-12-11 21:04:30,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 118 transitions, 511 flow. Second operand has 7 states, 7 states have (on average 67.57142857142857) internal successors, (473), 7 states have internal predecessors, (473), 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 21:04:30,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:04:30,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 83 [2022-12-11 21:04:30,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:04:31,099 INFO L130 PetriNetUnfolder]: 380/1136 cut-off events. [2022-12-11 21:04:31,099 INFO L131 PetriNetUnfolder]: For 284/489 co-relation queries the response was YES. [2022-12-11 21:04:31,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2888 conditions, 1136 events. 380/1136 cut-off events. For 284/489 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8929 event pairs, 5 based on Foata normal form. 53/1143 useless extension candidates. Maximal degree in co-relation 2841. Up to 289 conditions per place. [2022-12-11 21:04:31,106 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 33 selfloop transitions, 44 changer transitions 21/166 dead transitions. [2022-12-11 21:04:31,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 166 transitions, 913 flow [2022-12-11 21:04:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 21:04:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 21:04:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 921 transitions. [2022-12-11 21:04:31,108 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8535681186283596 [2022-12-11 21:04:31,108 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 27 predicate places. [2022-12-11 21:04:31,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 166 transitions, 913 flow [2022-12-11 21:04:31,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 145 transitions, 787 flow [2022-12-11 21:04:31,112 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 145 transitions, 787 flow [2022-12-11 21:04:31,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.57142857142857) internal successors, (473), 7 states have internal predecessors, (473), 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 21:04:31,113 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:04:31,113 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] [2022-12-11 21:04:31,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 21:04:31,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:04:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:04:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2102090525, now seen corresponding path program 1 times [2022-12-11 21:04:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:04:31,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235125056] [2022-12-11 21:04:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:04:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:04:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:04:31,231 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 21:04:31,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:04:31,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235125056] [2022-12-11 21:04:31,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235125056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:04:31,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:04:31,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 21:04:31,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234915225] [2022-12-11 21:04:31,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:04:31,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 21:04:31,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:04:31,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 21:04:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-11 21:04:31,233 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 83 [2022-12-11 21:04:31,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 145 transitions, 787 flow. Second operand has 8 states, 8 states have (on average 67.5) internal successors, (540), 8 states have internal predecessors, (540), 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 21:04:31,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:04:31,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 83 [2022-12-11 21:04:31,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:04:31,445 INFO L130 PetriNetUnfolder]: 306/927 cut-off events. [2022-12-11 21:04:31,445 INFO L131 PetriNetUnfolder]: For 586/1236 co-relation queries the response was YES. [2022-12-11 21:04:31,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 927 events. 306/927 cut-off events. For 586/1236 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7463 event pairs, 0 based on Foata normal form. 119/985 useless extension candidates. Maximal degree in co-relation 2998. Up to 255 conditions per place. [2022-12-11 21:04:31,453 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 30 selfloop transitions, 48 changer transitions 18/160 dead transitions. [2022-12-11 21:04:31,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 160 transitions, 1069 flow [2022-12-11 21:04:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-11 21:04:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-11 21:04:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1118 transitions. [2022-12-11 21:04:31,456 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8418674698795181 [2022-12-11 21:04:31,458 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 42 predicate places. [2022-12-11 21:04:31,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 160 transitions, 1069 flow [2022-12-11 21:04:31,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 142 transitions, 925 flow [2022-12-11 21:04:31,462 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 142 transitions, 925 flow [2022-12-11 21:04:31,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.5) internal successors, (540), 8 states have internal predecessors, (540), 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 21:04:31,462 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:04:31,462 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] [2022-12-11 21:04:31,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 21:04:31,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:04:31,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:04:31,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1455756017, now seen corresponding path program 1 times [2022-12-11 21:04:31,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:04:31,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048963852] [2022-12-11 21:04:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:04:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:04:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:04:31,572 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 21:04:31,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:04:31,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048963852] [2022-12-11 21:04:31,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048963852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:04:31,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:04:31,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 21:04:31,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344640239] [2022-12-11 21:04:31,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:04:31,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 21:04:31,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:04:31,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 21:04:31,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 21:04:31,574 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 83 [2022-12-11 21:04:31,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 142 transitions, 925 flow. Second operand has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 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 21:04:31,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:04:31,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 83 [2022-12-11 21:04:31,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:04:31,726 INFO L130 PetriNetUnfolder]: 434/1406 cut-off events. [2022-12-11 21:04:31,726 INFO L131 PetriNetUnfolder]: For 932/1196 co-relation queries the response was YES. [2022-12-11 21:04:31,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4534 conditions, 1406 events. 434/1406 cut-off events. For 932/1196 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 12617 event pairs, 0 based on Foata normal form. 5/1351 useless extension candidates. Maximal degree in co-relation 4478. Up to 337 conditions per place. [2022-12-11 21:04:31,730 INFO L137 encePairwiseOnDemand]: 77/83 looper letters, 12 selfloop transitions, 1 changer transitions 80/152 dead transitions. [2022-12-11 21:04:31,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 152 transitions, 1087 flow [2022-12-11 21:04:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 21:04:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 21:04:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 483 transitions. [2022-12-11 21:04:31,732 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8313253012048193 [2022-12-11 21:04:31,732 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 45 predicate places. [2022-12-11 21:04:31,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 152 transitions, 1087 flow [2022-12-11 21:04:31,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 72 transitions, 357 flow [2022-12-11 21:04:31,734 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 72 transitions, 357 flow [2022-12-11 21:04:31,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 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 21:04:31,735 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:04:31,735 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] [2022-12-11 21:04:31,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 21:04:31,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:04:31,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:04:31,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1146392135, now seen corresponding path program 2 times [2022-12-11 21:04:31,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:04:31,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936707595] [2022-12-11 21:04:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:04:31,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:04:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:04:31,858 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 21:04:31,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:04:31,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936707595] [2022-12-11 21:04:31,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936707595] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:04:31,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:04:31,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 21:04:31,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878782701] [2022-12-11 21:04:31,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:04:31,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 21:04:31,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:04:31,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 21:04:31,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 21:04:31,860 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2022-12-11 21:04:31,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 72 transitions, 357 flow. Second operand has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 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 21:04:31,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:04:31,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2022-12-11 21:04:31,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:04:31,914 INFO L130 PetriNetUnfolder]: 6/96 cut-off events. [2022-12-11 21:04:31,914 INFO L131 PetriNetUnfolder]: For 138/142 co-relation queries the response was YES. [2022-12-11 21:04:31,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 96 events. 6/96 cut-off events. For 138/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 161 event pairs, 0 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 194. Up to 16 conditions per place. [2022-12-11 21:04:31,914 INFO L137 encePairwiseOnDemand]: 76/83 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2022-12-11 21:04:31,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 70 transitions, 373 flow [2022-12-11 21:04:31,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 21:04:31,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 21:04:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 469 transitions. [2022-12-11 21:04:31,915 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8072289156626506 [2022-12-11 21:04:31,916 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2022-12-11 21:04:31,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 70 transitions, 373 flow [2022-12-11 21:04:31,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-11 21:04:31,916 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-11 21:04:31,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 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 21:04:31,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-11 21:04:31,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-11 21:04:31,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-11 21:04:31,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-11 21:04:31,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 21:04:31,919 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-12-11 21:04:31,921 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 21:04:31,921 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 21:04:31,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 09:04:31 BasicIcfg [2022-12-11 21:04:31,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 21:04:31,925 INFO L158 Benchmark]: Toolchain (without parser) took 4387.23ms. Allocated memory was 186.6MB in the beginning and 244.3MB in the end (delta: 57.7MB). Free memory was 151.0MB in the beginning and 144.4MB in the end (delta: 6.6MB). Peak memory consumption was 65.3MB. Max. memory is 8.0GB. [2022-12-11 21:04:31,925 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 164.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 21:04:31,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.88ms. Allocated memory is still 186.6MB. Free memory was 150.5MB in the beginning and 127.8MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-11 21:04:31,925 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.41ms. Allocated memory is still 186.6MB. Free memory was 127.8MB in the beginning and 125.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 21:04:31,925 INFO L158 Benchmark]: Boogie Preprocessor took 16.95ms. Allocated memory is still 186.6MB. Free memory was 125.8MB in the beginning and 124.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 21:04:31,926 INFO L158 Benchmark]: RCFGBuilder took 319.22ms. Allocated memory is still 186.6MB. Free memory was 124.2MB in the beginning and 110.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-11 21:04:31,926 INFO L158 Benchmark]: TraceAbstraction took 3560.75ms. Allocated memory was 186.6MB in the beginning and 244.3MB in the end (delta: 57.7MB). Free memory was 109.6MB in the beginning and 144.4MB in the end (delta: -34.8MB). Peak memory consumption was 24.4MB. Max. memory is 8.0GB. [2022-12-11 21:04:31,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 164.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 433.88ms. Allocated memory is still 186.6MB. Free memory was 150.5MB in the beginning and 127.8MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.41ms. Allocated memory is still 186.6MB. Free memory was 127.8MB in the beginning and 125.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.95ms. Allocated memory is still 186.6MB. Free memory was 125.8MB in the beginning and 124.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 319.22ms. Allocated memory is still 186.6MB. Free memory was 124.2MB in the beginning and 110.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3560.75ms. Allocated memory was 186.6MB in the beginning and 244.3MB in the end (delta: 57.7MB). Free memory was 109.6MB in the beginning and 144.4MB in the end (delta: -34.8MB). Peak memory consumption was 24.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 335 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 335 mSDsluCounter, 315 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 244 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 423 IncrementalHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 71 mSDtfsCounter, 423 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=925occurred in iteration=5, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 1717 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 1458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 21:04:31,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...