/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/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 19:08:50,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 19:08:50,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 19:08:50,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 19:08:50,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 19:08:50,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 19:08:50,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 19:08:50,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 19:08:50,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 19:08:50,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 19:08:50,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 19:08:50,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 19:08:50,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 19:08:50,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 19:08:50,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 19:08:50,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 19:08:50,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 19:08:50,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 19:08:50,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 19:08:50,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 19:08:50,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 19:08:50,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 19:08:50,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 19:08:50,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 19:08:50,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 19:08:50,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 19:08:50,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 19:08:50,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 19:08:50,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 19:08:50,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 19:08:50,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 19:08:50,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 19:08:50,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 19:08:50,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 19:08:50,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 19:08:50,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 19:08:50,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 19:08:50,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 19:08:50,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 19:08:50,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 19:08:50,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 19:08:50,148 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 19:08:50,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 19:08:50,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 19:08:50,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 19:08:50,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 19:08:50,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 19:08:50,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 19:08:50,179 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 19:08:50,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 19:08:50,179 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 19:08:50,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 19:08:50,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 19:08:50,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 19:08:50,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 19:08:50,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 19:08:50,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 19:08:50,180 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 19:08:50,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 19:08:50,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 19:08:50,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 19:08:50,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 19:08:50,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 19:08:50,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 19:08:50,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 19:08:50,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:08:50,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 19:08:50,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 19:08:50,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 19:08:50,182 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 19:08:50,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 19:08:50,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 19:08:50,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 19:08:50,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 19:08:50,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 19:08:50,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 19:08:50,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 19:08:50,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 19:08:50,479 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 19:08:50,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-11 19:08:51,695 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 19:08:52,003 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 19:08:52,004 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-11 19:08:52,020 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52f906358/04b4fe3f58be45f48cc5c91af8407a0f/FLAG690adc46c [2022-12-11 19:08:52,042 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52f906358/04b4fe3f58be45f48cc5c91af8407a0f [2022-12-11 19:08:52,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 19:08:52,047 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 19:08:52,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 19:08:52,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 19:08:52,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 19:08:52,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ec4d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52, skipping insertion in model container [2022-12-11 19:08:52,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 19:08:52,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 19:08:52,262 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-11 19:08:52,439 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,442 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,442 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,442 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,443 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,443 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,447 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,447 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:08:52,474 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 19:08:52,489 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-11 19:08:52,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:08:52,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:08:52,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:08:52,582 INFO L208 MainTranslator]: Completed translation [2022-12-11 19:08:52,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52 WrapperNode [2022-12-11 19:08:52,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 19:08:52,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 19:08:52,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 19:08:52,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 19:08:52,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,619 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-12-11 19:08:52,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 19:08:52,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 19:08:52,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 19:08:52,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 19:08:52,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,640 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 19:08:52,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 19:08:52,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 19:08:52,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 19:08:52,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (1/1) ... [2022-12-11 19:08:52,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:08:52,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:08:52,690 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 19:08:52,696 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 19:08:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 19:08:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 19:08:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 19:08:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 19:08:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 19:08:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-11 19:08:52,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-11 19:08:52,727 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-11 19:08:52,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-11 19:08:52,728 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-11 19:08:52,728 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-11 19:08:52,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 19:08:52,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 19:08:52,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 19:08:52,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 19:08:52,729 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 19:08:52,838 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 19:08:52,840 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 19:08:53,069 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 19:08:53,076 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 19:08:53,076 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-11 19:08:53,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:08:53 BoogieIcfgContainer [2022-12-11 19:08:53,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 19:08:53,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 19:08:53,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 19:08:53,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 19:08:53,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 07:08:52" (1/3) ... [2022-12-11 19:08:53,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb6570d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:08:53, skipping insertion in model container [2022-12-11 19:08:53,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:08:52" (2/3) ... [2022-12-11 19:08:53,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb6570d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:08:53, skipping insertion in model container [2022-12-11 19:08:53,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:08:53" (3/3) ... [2022-12-11 19:08:53,088 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-11 19:08:53,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 19:08:53,103 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 19:08:53,103 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 19:08:53,155 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 19:08:53,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2022-12-11 19:08:53,228 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2022-12-11 19:08:53,228 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 19:08:53,233 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 43 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 19:08:53,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2022-12-11 19:08:53,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2022-12-11 19:08:53,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 19:08:53,253 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;@8e44e18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 19:08:53,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 19:08:53,277 INFO L130 PetriNetUnfolder]: 1/67 cut-off events. [2022-12-11 19:08:53,277 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 19:08:53,278 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:08:53,278 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 19:08:53,279 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 19:08:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:08:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash 278817250, now seen corresponding path program 1 times [2022-12-11 19:08:53,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:08:53,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092872443] [2022-12-11 19:08:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:08:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:08:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:08:54,090 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 19:08:54,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:08:54,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092872443] [2022-12-11 19:08:54,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092872443] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:08:54,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:08:54,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:08:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969815644] [2022-12-11 19:08:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:08:54,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:08:54,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:08:54,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:08:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:08:54,160 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-12-11 19:08:54,167 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 19:08:54,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:08:54,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-12-11 19:08:54,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:08:54,507 INFO L130 PetriNetUnfolder]: 91/317 cut-off events. [2022-12-11 19:08:54,507 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-11 19:08:54,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 317 events. 91/317 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1409 event pairs, 14 based on Foata normal form. 14/318 useless extension candidates. Maximal degree in co-relation 499. Up to 60 conditions per place. [2022-12-11 19:08:54,512 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 19 selfloop transitions, 5 changer transitions 35/110 dead transitions. [2022-12-11 19:08:54,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 110 transitions, 347 flow [2022-12-11 19:08:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 19:08:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 19:08:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 884 transitions. [2022-12-11 19:08:54,530 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8192771084337349 [2022-12-11 19:08:54,532 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 145 flow. Second operand 13 states and 884 transitions. [2022-12-11 19:08:54,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 110 transitions, 347 flow [2022-12-11 19:08:54,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 110 transitions, 344 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 19:08:54,539 INFO L231 Difference]: Finished difference. Result has 97 places, 69 transitions, 197 flow [2022-12-11 19:08:54,541 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=197, PETRI_PLACES=97, PETRI_TRANSITIONS=69} [2022-12-11 19:08:54,545 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2022-12-11 19:08:54,545 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 69 transitions, 197 flow [2022-12-11 19:08:54,546 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 19:08:54,546 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:08:54,546 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 19:08:54,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 19:08:54,547 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 19:08:54,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:08:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1427880067, now seen corresponding path program 1 times [2022-12-11 19:08:54,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:08:54,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111920427] [2022-12-11 19:08:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:08:54,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:08:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:08:54,851 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 19:08:54,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:08:54,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111920427] [2022-12-11 19:08:54,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111920427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:08:54,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:08:54,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:08:54,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194602120] [2022-12-11 19:08:54,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:08:54,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:08:54,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:08:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:08:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:08:54,856 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-12-11 19:08:54,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 69 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 19:08:54,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:08:54,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-12-11 19:08:54,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:08:55,295 INFO L130 PetriNetUnfolder]: 234/697 cut-off events. [2022-12-11 19:08:55,295 INFO L131 PetriNetUnfolder]: For 1147/1296 co-relation queries the response was YES. [2022-12-11 19:08:55,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 697 events. 234/697 cut-off events. For 1147/1296 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4206 event pairs, 7 based on Foata normal form. 20/703 useless extension candidates. Maximal degree in co-relation 1851. Up to 127 conditions per place. [2022-12-11 19:08:55,304 INFO L137 encePairwiseOnDemand]: 72/83 looper letters, 35 selfloop transitions, 16 changer transitions 62/162 dead transitions. [2022-12-11 19:08:55,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 162 transitions, 1011 flow [2022-12-11 19:08:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-11 19:08:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-11 19:08:55,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1138 transitions. [2022-12-11 19:08:55,308 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8065201984408221 [2022-12-11 19:08:55,308 INFO L175 Difference]: Start difference. First operand has 97 places, 69 transitions, 197 flow. Second operand 17 states and 1138 transitions. [2022-12-11 19:08:55,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 162 transitions, 1011 flow [2022-12-11 19:08:55,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 162 transitions, 889 flow, removed 40 selfloop flow, removed 8 redundant places. [2022-12-11 19:08:55,316 INFO L231 Difference]: Finished difference. Result has 112 places, 80 transitions, 372 flow [2022-12-11 19:08:55,317 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=372, PETRI_PLACES=112, PETRI_TRANSITIONS=80} [2022-12-11 19:08:55,317 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 35 predicate places. [2022-12-11 19:08:55,318 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 80 transitions, 372 flow [2022-12-11 19:08:55,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 19:08:55,318 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:08:55,318 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 19:08:55,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 19:08:55,319 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 19:08:55,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:08:55,319 INFO L85 PathProgramCache]: Analyzing trace with hash -464342396, now seen corresponding path program 1 times [2022-12-11 19:08:55,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:08:55,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169365296] [2022-12-11 19:08:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:08:55,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:08:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:08:55,504 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 19:08:55,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:08:55,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169365296] [2022-12-11 19:08:55,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169365296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:08:55,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:08:55,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 19:08:55,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070433949] [2022-12-11 19:08:55,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:08:55,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 19:08:55,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:08:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 19:08:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-11 19:08:55,507 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-12-11 19:08:55,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 80 transitions, 372 flow. Second operand has 8 states, 8 states have (on average 62.875) internal successors, (503), 8 states have internal predecessors, (503), 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 19:08:55,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:08:55,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-12-11 19:08:55,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:08:55,725 INFO L130 PetriNetUnfolder]: 126/447 cut-off events. [2022-12-11 19:08:55,725 INFO L131 PetriNetUnfolder]: For 3467/4341 co-relation queries the response was YES. [2022-12-11 19:08:55,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 447 events. 126/447 cut-off events. For 3467/4341 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2357 event pairs, 14 based on Foata normal form. 13/443 useless extension candidates. Maximal degree in co-relation 1858. Up to 90 conditions per place. [2022-12-11 19:08:55,729 INFO L137 encePairwiseOnDemand]: 72/83 looper letters, 22 selfloop transitions, 9 changer transitions 44/124 dead transitions. [2022-12-11 19:08:55,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 124 transitions, 1027 flow [2022-12-11 19:08:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:08:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:08:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 728 transitions. [2022-12-11 19:08:55,732 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7973713033953997 [2022-12-11 19:08:55,732 INFO L175 Difference]: Start difference. First operand has 112 places, 80 transitions, 372 flow. Second operand 11 states and 728 transitions. [2022-12-11 19:08:55,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 124 transitions, 1027 flow [2022-12-11 19:08:55,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 124 transitions, 823 flow, removed 102 selfloop flow, removed 9 redundant places. [2022-12-11 19:08:55,743 INFO L231 Difference]: Finished difference. Result has 109 places, 73 transitions, 298 flow [2022-12-11 19:08:55,743 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=298, PETRI_PLACES=109, PETRI_TRANSITIONS=73} [2022-12-11 19:08:55,744 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 32 predicate places. [2022-12-11 19:08:55,744 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 73 transitions, 298 flow [2022-12-11 19:08:55,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 62.875) internal successors, (503), 8 states have internal predecessors, (503), 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 19:08:55,745 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:08:55,745 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 19:08:55,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 19:08:55,745 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 19:08:55,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:08:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash -994409916, now seen corresponding path program 1 times [2022-12-11 19:08:55,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:08:55,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515559197] [2022-12-11 19:08:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:08:55,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:08:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:08:55,910 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 19:08:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:08:55,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515559197] [2022-12-11 19:08:55,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515559197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:08:55,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:08:55,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:08:55,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477194176] [2022-12-11 19:08:55,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:08:55,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:08:55,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:08:55,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:08:55,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:08:55,913 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-12-11 19:08:55,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 73 transitions, 298 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 19:08:55,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:08:55,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-12-11 19:08:55,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:08:56,157 INFO L130 PetriNetUnfolder]: 58/323 cut-off events. [2022-12-11 19:08:56,157 INFO L131 PetriNetUnfolder]: For 935/1023 co-relation queries the response was YES. [2022-12-11 19:08:56,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 323 events. 58/323 cut-off events. For 935/1023 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1614 event pairs, 13 based on Foata normal form. 11/327 useless extension candidates. Maximal degree in co-relation 1008. Up to 59 conditions per place. [2022-12-11 19:08:56,160 INFO L137 encePairwiseOnDemand]: 74/83 looper letters, 19 selfloop transitions, 9 changer transitions 28/108 dead transitions. [2022-12-11 19:08:56,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 108 transitions, 720 flow [2022-12-11 19:08:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 19:08:56,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 19:08:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 876 transitions. [2022-12-11 19:08:56,163 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8118628359592215 [2022-12-11 19:08:56,163 INFO L175 Difference]: Start difference. First operand has 109 places, 73 transitions, 298 flow. Second operand 13 states and 876 transitions. [2022-12-11 19:08:56,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 108 transitions, 720 flow [2022-12-11 19:08:56,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 577 flow, removed 37 selfloop flow, removed 13 redundant places. [2022-12-11 19:08:56,168 INFO L231 Difference]: Finished difference. Result has 112 places, 74 transitions, 290 flow [2022-12-11 19:08:56,168 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=290, PETRI_PLACES=112, PETRI_TRANSITIONS=74} [2022-12-11 19:08:56,169 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 35 predicate places. [2022-12-11 19:08:56,169 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 74 transitions, 290 flow [2022-12-11 19:08:56,170 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 19:08:56,170 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:08:56,170 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] [2022-12-11 19:08:56,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 19:08:56,170 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 19:08:56,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:08:56,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1825445243, now seen corresponding path program 1 times [2022-12-11 19:08:56,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:08:56,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628559279] [2022-12-11 19:08:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:08:56,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:08:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:08:56,321 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 19:08:56,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:08:56,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628559279] [2022-12-11 19:08:56,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628559279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:08:56,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:08:56,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:08:56,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937427825] [2022-12-11 19:08:56,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:08:56,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:08:56,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:08:56,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:08:56,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:08:56,324 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 83 [2022-12-11 19:08:56,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 74 transitions, 290 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 19:08:56,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:08:56,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 83 [2022-12-11 19:08:56,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:08:56,485 INFO L130 PetriNetUnfolder]: 314/812 cut-off events. [2022-12-11 19:08:56,486 INFO L131 PetriNetUnfolder]: For 751/784 co-relation queries the response was YES. [2022-12-11 19:08:56,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 812 events. 314/812 cut-off events. For 751/784 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5276 event pairs, 14 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 1818. Up to 207 conditions per place. [2022-12-11 19:08:56,493 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 29 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2022-12-11 19:08:56,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 106 transitions, 450 flow [2022-12-11 19:08:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 19:08:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 19:08:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 708 transitions. [2022-12-11 19:08:56,495 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8530120481927711 [2022-12-11 19:08:56,496 INFO L175 Difference]: Start difference. First operand has 112 places, 74 transitions, 290 flow. Second operand 10 states and 708 transitions. [2022-12-11 19:08:56,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 106 transitions, 450 flow [2022-12-11 19:08:56,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 414 flow, removed 15 selfloop flow, removed 10 redundant places. [2022-12-11 19:08:56,501 INFO L231 Difference]: Finished difference. Result has 108 places, 89 transitions, 374 flow [2022-12-11 19:08:56,501 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=374, PETRI_PLACES=108, PETRI_TRANSITIONS=89} [2022-12-11 19:08:56,502 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 31 predicate places. [2022-12-11 19:08:56,502 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 89 transitions, 374 flow [2022-12-11 19:08:56,502 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 19:08:56,502 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:08:56,503 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 19:08:56,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 19:08:56,503 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 19:08:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:08:56,503 INFO L85 PathProgramCache]: Analyzing trace with hash 418590285, now seen corresponding path program 1 times [2022-12-11 19:08:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:08:56,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207336561] [2022-12-11 19:08:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:08:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:08:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:08:56,659 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 19:08:56,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:08:56,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207336561] [2022-12-11 19:08:56,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207336561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:08:56,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:08:56,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:08:56,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32315944] [2022-12-11 19:08:56,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:08:56,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:08:56,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:08:56,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:08:56,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:08:56,662 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 83 [2022-12-11 19:08:56,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 89 transitions, 374 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 19:08:56,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:08:56,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 83 [2022-12-11 19:08:56,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:08:56,869 INFO L130 PetriNetUnfolder]: 294/778 cut-off events. [2022-12-11 19:08:56,869 INFO L131 PetriNetUnfolder]: For 1831/2024 co-relation queries the response was YES. [2022-12-11 19:08:56,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2706 conditions, 778 events. 294/778 cut-off events. For 1831/2024 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5167 event pairs, 1 based on Foata normal form. 74/798 useless extension candidates. Maximal degree in co-relation 2685. Up to 308 conditions per place. [2022-12-11 19:08:56,875 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 26 selfloop transitions, 32 changer transitions 9/127 dead transitions. [2022-12-11 19:08:56,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 127 transitions, 744 flow [2022-12-11 19:08:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 19:08:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 19:08:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 921 transitions. [2022-12-11 19:08:56,878 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8535681186283596 [2022-12-11 19:08:56,878 INFO L175 Difference]: Start difference. First operand has 108 places, 89 transitions, 374 flow. Second operand 13 states and 921 transitions. [2022-12-11 19:08:56,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 127 transitions, 744 flow [2022-12-11 19:08:56,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 127 transitions, 727 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-11 19:08:56,885 INFO L231 Difference]: Finished difference. Result has 121 places, 109 transitions, 600 flow [2022-12-11 19:08:56,885 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=600, PETRI_PLACES=121, PETRI_TRANSITIONS=109} [2022-12-11 19:08:56,886 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 44 predicate places. [2022-12-11 19:08:56,886 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 109 transitions, 600 flow [2022-12-11 19:08:56,886 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 19:08:56,886 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:08:56,886 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] [2022-12-11 19:08:56,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 19:08:56,887 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 19:08:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:08:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1794061220, now seen corresponding path program 1 times [2022-12-11 19:08:56,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:08:56,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41458274] [2022-12-11 19:08:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:08:56,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:08:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:08:57,026 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 19:08:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:08:57,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41458274] [2022-12-11 19:08:57,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41458274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:08:57,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:08:57,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:08:57,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905774439] [2022-12-11 19:08:57,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:08:57,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:08:57,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:08:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:08:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:08:57,029 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2022-12-11 19:08:57,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 109 transitions, 600 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 19:08:57,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:08:57,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2022-12-11 19:08:57,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:08:57,193 INFO L130 PetriNetUnfolder]: 214/898 cut-off events. [2022-12-11 19:08:57,193 INFO L131 PetriNetUnfolder]: For 2283/2322 co-relation queries the response was YES. [2022-12-11 19:08:57,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2919 conditions, 898 events. 214/898 cut-off events. For 2283/2322 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7109 event pairs, 2 based on Foata normal form. 6/868 useless extension candidates. Maximal degree in co-relation 2896. Up to 257 conditions per place. [2022-12-11 19:08:57,199 INFO L137 encePairwiseOnDemand]: 77/83 looper letters, 19 selfloop transitions, 3 changer transitions 28/121 dead transitions. [2022-12-11 19:08:57,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 121 transitions, 716 flow [2022-12-11 19:08:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:08:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:08:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 482 transitions. [2022-12-11 19:08:57,201 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8296041308089501 [2022-12-11 19:08:57,201 INFO L175 Difference]: Start difference. First operand has 121 places, 109 transitions, 600 flow. Second operand 7 states and 482 transitions. [2022-12-11 19:08:57,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 121 transitions, 716 flow [2022-12-11 19:08:57,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 602 flow, removed 44 selfloop flow, removed 6 redundant places. [2022-12-11 19:08:57,248 INFO L231 Difference]: Finished difference. Result has 126 places, 88 transitions, 386 flow [2022-12-11 19:08:57,248 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=126, PETRI_TRANSITIONS=88} [2022-12-11 19:08:57,249 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 49 predicate places. [2022-12-11 19:08:57,249 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 88 transitions, 386 flow [2022-12-11 19:08:57,249 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 19:08:57,249 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:08:57,250 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] [2022-12-11 19:08:57,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 19:08:57,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 19:08:57,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:08:57,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1940821930, now seen corresponding path program 2 times [2022-12-11 19:08:57,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:08:57,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333167121] [2022-12-11 19:08:57,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:08:57,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:08:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:08:57,467 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 19:08:57,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:08:57,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333167121] [2022-12-11 19:08:57,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333167121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:08:57,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:08:57,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 19:08:57,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500516302] [2022-12-11 19:08:57,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:08:57,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 19:08:57,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:08:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 19:08:57,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-11 19:08:57,470 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 83 [2022-12-11 19:08:57,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 88 transitions, 386 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 19:08:57,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:08:57,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 83 [2022-12-11 19:08:57,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:08:57,685 INFO L130 PetriNetUnfolder]: 85/525 cut-off events. [2022-12-11 19:08:57,685 INFO L131 PetriNetUnfolder]: For 776/901 co-relation queries the response was YES. [2022-12-11 19:08:57,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 525 events. 85/525 cut-off events. For 776/901 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4146 event pairs, 2 based on Foata normal form. 63/555 useless extension candidates. Maximal degree in co-relation 1427. Up to 81 conditions per place. [2022-12-11 19:08:57,688 INFO L137 encePairwiseOnDemand]: 75/83 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2022-12-11 19:08:57,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 93 transitions, 480 flow [2022-12-11 19:08:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-11 19:08:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-11 19:08:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1031 transitions. [2022-12-11 19:08:57,691 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8281124497991967 [2022-12-11 19:08:57,691 INFO L175 Difference]: Start difference. First operand has 126 places, 88 transitions, 386 flow. Second operand 15 states and 1031 transitions. [2022-12-11 19:08:57,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 93 transitions, 480 flow [2022-12-11 19:08:57,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 93 transitions, 430 flow, removed 14 selfloop flow, removed 11 redundant places. [2022-12-11 19:08:57,695 INFO L231 Difference]: Finished difference. Result has 115 places, 0 transitions, 0 flow [2022-12-11 19:08:57,695 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=115, PETRI_TRANSITIONS=0} [2022-12-11 19:08:57,696 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 38 predicate places. [2022-12-11 19:08:57,696 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 0 transitions, 0 flow [2022-12-11 19:08:57,696 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 19:08:57,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-11 19:08:57,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-11 19:08:57,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-11 19:08:57,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-11 19:08:57,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 19:08:57,700 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-12-11 19:08:57,702 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 19:08:57,702 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 19:08:57,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 07:08:57 BasicIcfg [2022-12-11 19:08:57,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 19:08:57,707 INFO L158 Benchmark]: Toolchain (without parser) took 5660.14ms. Allocated memory was 180.4MB in the beginning and 317.7MB in the end (delta: 137.4MB). Free memory was 155.9MB in the beginning and 199.1MB in the end (delta: -43.2MB). Peak memory consumption was 93.7MB. Max. memory is 8.0GB. [2022-12-11 19:08:57,707 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 180.4MB. Free memory is still 156.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 19:08:57,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.55ms. Allocated memory is still 180.4MB. Free memory was 155.9MB in the beginning and 132.4MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-11 19:08:57,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.27ms. Allocated memory is still 180.4MB. Free memory was 132.4MB in the beginning and 130.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 19:08:57,709 INFO L158 Benchmark]: Boogie Preprocessor took 22.97ms. Allocated memory is still 180.4MB. Free memory was 130.9MB in the beginning and 129.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 19:08:57,709 INFO L158 Benchmark]: RCFGBuilder took 434.22ms. Allocated memory is still 180.4MB. Free memory was 129.3MB in the beginning and 115.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-11 19:08:57,709 INFO L158 Benchmark]: TraceAbstraction took 4625.20ms. Allocated memory was 180.4MB in the beginning and 317.7MB in the end (delta: 137.4MB). Free memory was 114.6MB in the beginning and 199.1MB in the end (delta: -84.5MB). Peak memory consumption was 52.8MB. Max. memory is 8.0GB. [2022-12-11 19:08:57,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 180.4MB. Free memory is still 156.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 534.55ms. Allocated memory is still 180.4MB. Free memory was 155.9MB in the beginning and 132.4MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.27ms. Allocated memory is still 180.4MB. Free memory was 132.4MB in the beginning and 130.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.97ms. Allocated memory is still 180.4MB. Free memory was 130.9MB in the beginning and 129.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 434.22ms. Allocated memory is still 180.4MB. Free memory was 129.3MB in the beginning and 115.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4625.20ms. Allocated memory was 180.4MB in the beginning and 317.7MB in the end (delta: 137.4MB). Free memory was 114.6MB in the beginning and 199.1MB in the end (delta: -84.5MB). Peak memory consumption was 52.8MB. 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: 4.5s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 458 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 458 mSDsluCounter, 478 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 368 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 531 IncrementalHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 110 mSDtfsCounter, 531 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=600occurred in iteration=6, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 433 NumberOfCodeBlocks, 433 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 425 ConstructedInterpolants, 0 QuantifiedInterpolants, 1583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 19:08:57,727 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...