/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 13:00:48,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 13:00:48,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 13:00:48,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 13:00:48,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 13:00:48,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 13:00:48,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 13:00:48,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 13:00:48,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 13:00:48,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 13:00:48,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 13:00:48,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 13:00:48,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 13:00:48,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 13:00:48,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 13:00:48,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 13:00:48,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 13:00:48,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 13:00:48,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 13:00:48,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 13:00:48,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 13:00:48,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 13:00:48,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 13:00:48,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 13:00:48,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 13:00:48,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 13:00:48,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 13:00:48,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 13:00:48,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 13:00:48,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 13:00:48,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 13:00:48,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 13:00:48,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 13:00:48,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 13:00:48,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 13:00:48,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 13:00:48,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 13:00:48,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 13:00:48,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 13:00:48,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 13:00:48,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 13:00:48,509 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 [2022-12-12 13:00:48,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 13:00:48,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 13:00:48,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 13:00:48,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 13:00:48,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 13:00:48,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 13:00:48,536 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 13:00:48,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 13:00:48,537 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 13:00:48,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 13:00:48,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 13:00:48,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 13:00:48,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 13:00:48,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 13:00:48,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 13:00:48,538 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 13:00:48,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 13:00:48,538 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 13:00:48,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 13:00:48,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 13:00:48,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 13:00:48,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 13:00:48,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 13:00:48,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 13:00:48,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 13:00:48,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 13:00:48,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 13:00:48,539 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 13:00:48,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 13:00:48,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 13:00:48,539 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 13:00:48,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 13:00:48,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 13:00:48,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 13:00:48,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 13:00:48,800 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 13:00:48,801 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 13:00:48,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2022-12-12 13:00:49,820 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 13:00:49,984 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 13:00:49,984 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2022-12-12 13:00:49,988 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ad59be41/576ea2bd50484fd58cdc0ff4a4c32f80/FLAGb31889f86 [2022-12-12 13:00:50,001 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ad59be41/576ea2bd50484fd58cdc0ff4a4c32f80 [2022-12-12 13:00:50,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 13:00:50,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 13:00:50,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 13:00:50,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 13:00:50,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 13:00:50,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4b8459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50, skipping insertion in model container [2022-12-12 13:00:50,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 13:00:50,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 13:00:50,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,128 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c[3089,3102] [2022-12-12 13:00:50,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 13:00:50,137 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 13:00:50,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:00:50,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:00:50,153 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c[3089,3102] [2022-12-12 13:00:50,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 13:00:50,163 INFO L208 MainTranslator]: Completed translation [2022-12-12 13:00:50,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50 WrapperNode [2022-12-12 13:00:50,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 13:00:50,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 13:00:50,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 13:00:50,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 13:00:50,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,190 INFO L138 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 158 [2022-12-12 13:00:50,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 13:00:50,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 13:00:50,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 13:00:50,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 13:00:50,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,205 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 13:00:50,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 13:00:50,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 13:00:50,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 13:00:50,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (1/1) ... [2022-12-12 13:00:50,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 13:00:50,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:00:50,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 13:00:50,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 13:00:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 13:00:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 13:00:50,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 13:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 13:00:50,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 13:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 13:00:50,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 13:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 13:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 13:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 13:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 13:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 13:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 13:00:50,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 13:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 13:00:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 13:00:50,282 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 13:00:50,355 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 13:00:50,357 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 13:00:50,648 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 13:00:50,694 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 13:00:50,694 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 13:00:50,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:00:50 BoogieIcfgContainer [2022-12-12 13:00:50,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 13:00:50,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 13:00:50,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 13:00:50,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 13:00:50,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 01:00:50" (1/3) ... [2022-12-12 13:00:50,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11772286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:00:50, skipping insertion in model container [2022-12-12 13:00:50,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:00:50" (2/3) ... [2022-12-12 13:00:50,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11772286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:00:50, skipping insertion in model container [2022-12-12 13:00:50,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:00:50" (3/3) ... [2022-12-12 13:00:50,702 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2022-12-12 13:00:50,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 13:00:50,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 13:00:50,715 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 13:00:50,762 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 13:00:50,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 248 flow [2022-12-12 13:00:50,848 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-12-12 13:00:50,848 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 13:00:50,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 2/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2022-12-12 13:00:50,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 248 flow [2022-12-12 13:00:50,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 99 transitions, 216 flow [2022-12-12 13:00:50,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 13:00:50,872 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;@43f77d68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 13:00:50,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 13:00:50,928 INFO L130 PetriNetUnfolder]: 2/98 cut-off events. [2022-12-12 13:00:50,929 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 13:00:50,929 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:00:50,929 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:00:50,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 13:00:50,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:00:50,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1928227823, now seen corresponding path program 1 times [2022-12-12 13:00:50,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:00:50,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945492387] [2022-12-12 13:00:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:00:50,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:00:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:00:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:00:52,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:00:52,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945492387] [2022-12-12 13:00:52,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945492387] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:00:52,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:00:52,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 13:00:52,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718778561] [2022-12-12 13:00:52,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:00:52,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 13:00:52,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:00:52,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 13:00:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-12 13:00:52,085 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 112 [2022-12-12 13:00:52,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 99 transitions, 216 flow. Second operand has 10 states, 10 states have (on average 79.1) internal successors, (791), 10 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:52,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:00:52,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 112 [2022-12-12 13:00:52,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:00:52,532 INFO L130 PetriNetUnfolder]: 372/916 cut-off events. [2022-12-12 13:00:52,532 INFO L131 PetriNetUnfolder]: For 208/216 co-relation queries the response was YES. [2022-12-12 13:00:52,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 916 events. 372/916 cut-off events. For 208/216 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4905 event pairs, 201 based on Foata normal form. 3/873 useless extension candidates. Maximal degree in co-relation 1291. Up to 323 conditions per place. [2022-12-12 13:00:52,542 INFO L137 encePairwiseOnDemand]: 97/112 looper letters, 34 selfloop transitions, 7 changer transitions 30/135 dead transitions. [2022-12-12 13:00:52,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 135 transitions, 454 flow [2022-12-12 13:00:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 13:00:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 13:00:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 987 transitions. [2022-12-12 13:00:52,560 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.734375 [2022-12-12 13:00:52,564 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 11 predicate places. [2022-12-12 13:00:52,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 135 transitions, 454 flow [2022-12-12 13:00:52,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 135 transitions, 411 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-12-12 13:00:52,574 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 135 transitions, 411 flow [2022-12-12 13:00:52,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 79.1) internal successors, (791), 10 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:52,574 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:00:52,575 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:00:52,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 13:00:52,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 13:00:52,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:00:52,577 INFO L85 PathProgramCache]: Analyzing trace with hash 712106315, now seen corresponding path program 2 times [2022-12-12 13:00:52,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:00:52,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375174652] [2022-12-12 13:00:52,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:00:52,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:00:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:00:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:00:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:00:52,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375174652] [2022-12-12 13:00:52,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375174652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:00:52,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:00:52,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 13:00:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040678675] [2022-12-12 13:00:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:00:52,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 13:00:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:00:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 13:00:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-12 13:00:52,867 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 112 [2022-12-12 13:00:52,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 135 transitions, 411 flow. Second operand has 7 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:52,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:00:52,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 112 [2022-12-12 13:00:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:00:53,094 INFO L130 PetriNetUnfolder]: 550/1439 cut-off events. [2022-12-12 13:00:53,094 INFO L131 PetriNetUnfolder]: For 493/974 co-relation queries the response was YES. [2022-12-12 13:00:53,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 1439 events. 550/1439 cut-off events. For 493/974 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9717 event pairs, 101 based on Foata normal form. 40/1440 useless extension candidates. Maximal degree in co-relation 1504. Up to 522 conditions per place. [2022-12-12 13:00:53,102 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 60 selfloop transitions, 19 changer transitions 71/219 dead transitions. [2022-12-12 13:00:53,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 219 transitions, 1060 flow [2022-12-12 13:00:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 13:00:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 13:00:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 695 transitions. [2022-12-12 13:00:53,104 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7756696428571429 [2022-12-12 13:00:53,105 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 9 predicate places. [2022-12-12 13:00:53,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 219 transitions, 1060 flow [2022-12-12 13:00:53,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 219 transitions, 1038 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-12 13:00:53,110 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 219 transitions, 1038 flow [2022-12-12 13:00:53,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:53,111 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:00:53,111 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:00:53,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 13:00:53,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 13:00:53,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:00:53,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1553385179, now seen corresponding path program 3 times [2022-12-12 13:00:53,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:00:53,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457912052] [2022-12-12 13:00:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:00:53,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:00:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:00:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:00:53,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:00:53,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457912052] [2022-12-12 13:00:53,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457912052] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:00:53,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:00:53,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 13:00:53,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409420963] [2022-12-12 13:00:53,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:00:53,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 13:00:53,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:00:53,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 13:00:53,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-12 13:00:53,333 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 112 [2022-12-12 13:00:53,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 219 transitions, 1038 flow. Second operand has 7 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:53,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:00:53,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 112 [2022-12-12 13:00:53,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:00:53,565 INFO L130 PetriNetUnfolder]: 473/1313 cut-off events. [2022-12-12 13:00:53,565 INFO L131 PetriNetUnfolder]: For 1305/2382 co-relation queries the response was YES. [2022-12-12 13:00:53,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3849 conditions, 1313 events. 473/1313 cut-off events. For 1305/2382 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9031 event pairs, 97 based on Foata normal form. 82/1355 useless extension candidates. Maximal degree in co-relation 816. Up to 449 conditions per place. [2022-12-12 13:00:53,571 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 62 selfloop transitions, 20 changer transitions 85/236 dead transitions. [2022-12-12 13:00:53,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 236 transitions, 1466 flow [2022-12-12 13:00:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 13:00:53,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 13:00:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 694 transitions. [2022-12-12 13:00:53,574 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7745535714285714 [2022-12-12 13:00:53,575 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 14 predicate places. [2022-12-12 13:00:53,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 236 transitions, 1466 flow [2022-12-12 13:00:53,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 236 transitions, 1280 flow, removed 69 selfloop flow, removed 4 redundant places. [2022-12-12 13:00:53,581 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 236 transitions, 1280 flow [2022-12-12 13:00:53,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:53,581 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:00:53,581 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:00:53,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 13:00:53,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 13:00:53,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:00:53,582 INFO L85 PathProgramCache]: Analyzing trace with hash -99060195, now seen corresponding path program 4 times [2022-12-12 13:00:53,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:00:53,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60547881] [2022-12-12 13:00:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:00:53,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:00:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:00:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:00:53,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:00:53,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60547881] [2022-12-12 13:00:53,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60547881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:00:53,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:00:53,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 13:00:53,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110643544] [2022-12-12 13:00:53,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:00:53,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 13:00:53,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:00:53,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 13:00:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-12 13:00:53,785 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 112 [2022-12-12 13:00:53,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 236 transitions, 1280 flow. Second operand has 8 states, 8 states have (on average 81.625) internal successors, (653), 8 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:53,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:00:53,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 112 [2022-12-12 13:00:53,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:00:54,022 INFO L130 PetriNetUnfolder]: 484/1439 cut-off events. [2022-12-12 13:00:54,022 INFO L131 PetriNetUnfolder]: For 1985/3145 co-relation queries the response was YES. [2022-12-12 13:00:54,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4496 conditions, 1439 events. 484/1439 cut-off events. For 1985/3145 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10516 event pairs, 88 based on Foata normal form. 77/1478 useless extension candidates. Maximal degree in co-relation 827. Up to 481 conditions per place. [2022-12-12 13:00:54,030 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 79 selfloop transitions, 43 changer transitions 129/320 dead transitions. [2022-12-12 13:00:54,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 320 transitions, 2383 flow [2022-12-12 13:00:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 13:00:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 13:00:54,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 773 transitions. [2022-12-12 13:00:54,032 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7668650793650794 [2022-12-12 13:00:54,033 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 18 predicate places. [2022-12-12 13:00:54,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 320 transitions, 2383 flow [2022-12-12 13:00:54,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 320 transitions, 2251 flow, removed 64 selfloop flow, removed 2 redundant places. [2022-12-12 13:00:54,038 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 320 transitions, 2251 flow [2022-12-12 13:00:54,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 81.625) internal successors, (653), 8 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:54,039 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:00:54,039 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:00:54,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 13:00:54,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 13:00:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:00:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash 953638189, now seen corresponding path program 5 times [2022-12-12 13:00:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:00:54,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54276654] [2022-12-12 13:00:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:00:54,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:00:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:00:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:00:54,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:00:54,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54276654] [2022-12-12 13:00:54,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54276654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:00:54,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:00:54,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 13:00:54,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496462308] [2022-12-12 13:00:54,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:00:54,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 13:00:54,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:00:54,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 13:00:54,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-12 13:00:54,221 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 112 [2022-12-12 13:00:54,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 320 transitions, 2251 flow. Second operand has 7 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:54,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:00:54,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 112 [2022-12-12 13:00:54,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:00:54,500 INFO L130 PetriNetUnfolder]: 345/1106 cut-off events. [2022-12-12 13:00:54,500 INFO L131 PetriNetUnfolder]: For 2803/5509 co-relation queries the response was YES. [2022-12-12 13:00:54,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4065 conditions, 1106 events. 345/1106 cut-off events. For 2803/5509 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7925 event pairs, 78 based on Foata normal form. 93/1163 useless extension candidates. Maximal degree in co-relation 1496. Up to 378 conditions per place. [2022-12-12 13:00:54,505 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 89 selfloop transitions, 35 changer transitions 119/311 dead transitions. [2022-12-12 13:00:54,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 311 transitions, 2641 flow [2022-12-12 13:00:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 13:00:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 13:00:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 694 transitions. [2022-12-12 13:00:54,506 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7745535714285714 [2022-12-12 13:00:54,507 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 23 predicate places. [2022-12-12 13:00:54,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 311 transitions, 2641 flow [2022-12-12 13:00:54,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 311 transitions, 2398 flow, removed 90 selfloop flow, removed 4 redundant places. [2022-12-12 13:00:54,512 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 311 transitions, 2398 flow [2022-12-12 13:00:54,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:54,512 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:00:54,512 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:00:54,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 13:00:54,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 13:00:54,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:00:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1091304649, now seen corresponding path program 6 times [2022-12-12 13:00:54,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:00:54,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150127486] [2022-12-12 13:00:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:00:54,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:00:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:00:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:00:54,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:00:54,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150127486] [2022-12-12 13:00:54,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150127486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:00:54,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:00:54,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 13:00:54,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540529949] [2022-12-12 13:00:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:00:54,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 13:00:54,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:00:54,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 13:00:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-12 13:00:54,844 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 112 [2022-12-12 13:00:54,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 311 transitions, 2398 flow. Second operand has 10 states, 10 states have (on average 79.1) internal successors, (791), 10 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:54,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:00:54,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 112 [2022-12-12 13:00:54,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:00:55,177 INFO L130 PetriNetUnfolder]: 357/1215 cut-off events. [2022-12-12 13:00:55,177 INFO L131 PetriNetUnfolder]: For 2923/5575 co-relation queries the response was YES. [2022-12-12 13:00:55,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4821 conditions, 1215 events. 357/1215 cut-off events. For 2923/5575 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9061 event pairs, 41 based on Foata normal form. 39/1231 useless extension candidates. Maximal degree in co-relation 708. Up to 425 conditions per place. [2022-12-12 13:00:55,182 INFO L137 encePairwiseOnDemand]: 98/112 looper letters, 78 selfloop transitions, 10 changer transitions 230/382 dead transitions. [2022-12-12 13:00:55,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 382 transitions, 3696 flow [2022-12-12 13:00:55,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 13:00:55,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 13:00:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 993 transitions. [2022-12-12 13:00:55,184 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7388392857142857 [2022-12-12 13:00:55,185 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 30 predicate places. [2022-12-12 13:00:55,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 382 transitions, 3696 flow [2022-12-12 13:00:55,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 382 transitions, 3151 flow, removed 270 selfloop flow, removed 2 redundant places. [2022-12-12 13:00:55,192 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 382 transitions, 3151 flow [2022-12-12 13:00:55,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 79.1) internal successors, (791), 10 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:55,193 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:00:55,193 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:00:55,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 13:00:55,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 13:00:55,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:00:55,194 INFO L85 PathProgramCache]: Analyzing trace with hash 303298403, now seen corresponding path program 7 times [2022-12-12 13:00:55,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:00:55,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378491541] [2022-12-12 13:00:55,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:00:55,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:00:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:00:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:00:55,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:00:55,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378491541] [2022-12-12 13:00:55,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378491541] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:00:55,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:00:55,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 13:00:55,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021860340] [2022-12-12 13:00:55,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:00:55,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 13:00:55,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:00:55,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 13:00:55,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-12 13:00:55,353 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 112 [2022-12-12 13:00:55,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 382 transitions, 3151 flow. Second operand has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:55,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:00:55,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 112 [2022-12-12 13:00:55,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:00:55,589 INFO L130 PetriNetUnfolder]: 360/1235 cut-off events. [2022-12-12 13:00:55,589 INFO L131 PetriNetUnfolder]: For 3925/5885 co-relation queries the response was YES. [2022-12-12 13:00:55,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 1235 events. 360/1235 cut-off events. For 3925/5885 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9232 event pairs, 47 based on Foata normal form. 106/1311 useless extension candidates. Maximal degree in co-relation 1416. Up to 288 conditions per place. [2022-12-12 13:00:55,593 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 51 selfloop transitions, 28 changer transitions 245/392 dead transitions. [2022-12-12 13:00:55,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 392 transitions, 3867 flow [2022-12-12 13:00:55,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 13:00:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 13:00:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 938 transitions. [2022-12-12 13:00:55,595 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2022-12-12 13:00:55,596 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 38 predicate places. [2022-12-12 13:00:55,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 392 transitions, 3867 flow [2022-12-12 13:00:55,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 392 transitions, 3262 flow, removed 185 selfloop flow, removed 7 redundant places. [2022-12-12 13:00:55,604 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 392 transitions, 3262 flow [2022-12-12 13:00:55,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:55,604 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:00:55,604 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:00:55,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 13:00:55,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 13:00:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:00:55,605 INFO L85 PathProgramCache]: Analyzing trace with hash 248787289, now seen corresponding path program 8 times [2022-12-12 13:00:55,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:00:55,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271592072] [2022-12-12 13:00:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:00:55,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:00:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:00:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:00:55,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:00:55,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271592072] [2022-12-12 13:00:55,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271592072] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:00:55,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:00:55,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 13:00:55,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760505619] [2022-12-12 13:00:55,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:00:55,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 13:00:55,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:00:55,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 13:00:55,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-12 13:00:55,755 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 112 [2022-12-12 13:00:55,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 392 transitions, 3262 flow. Second operand has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:55,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:00:55,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 112 [2022-12-12 13:00:55,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:00:55,967 INFO L130 PetriNetUnfolder]: 328/1162 cut-off events. [2022-12-12 13:00:55,967 INFO L131 PetriNetUnfolder]: For 3680/6130 co-relation queries the response was YES. [2022-12-12 13:00:55,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 1162 events. 328/1162 cut-off events. For 3680/6130 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8637 event pairs, 39 based on Foata normal form. 133/1264 useless extension candidates. Maximal degree in co-relation 1420. Up to 270 conditions per place. [2022-12-12 13:00:55,971 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 36 selfloop transitions, 16 changer transitions 271/389 dead transitions. [2022-12-12 13:00:55,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 389 transitions, 3843 flow [2022-12-12 13:00:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 13:00:55,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 13:00:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 938 transitions. [2022-12-12 13:00:55,974 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2022-12-12 13:00:55,974 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 41 predicate places. [2022-12-12 13:00:55,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 389 transitions, 3843 flow [2022-12-12 13:00:55,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 389 transitions, 3524 flow, removed 126 selfloop flow, removed 4 redundant places. [2022-12-12 13:00:55,982 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 389 transitions, 3524 flow [2022-12-12 13:00:55,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:55,982 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:00:55,982 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:00:55,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 13:00:55,983 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 13:00:55,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:00:55,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1610473279, now seen corresponding path program 9 times [2022-12-12 13:00:55,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:00:55,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115399218] [2022-12-12 13:00:55,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:00:55,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:00:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:00:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:00:56,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:00:56,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115399218] [2022-12-12 13:00:56,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115399218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:00:56,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:00:56,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 13:00:56,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375855992] [2022-12-12 13:00:56,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:00:56,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 13:00:56,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:00:56,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 13:00:56,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-12 13:00:56,149 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 112 [2022-12-12 13:00:56,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 389 transitions, 3524 flow. Second operand has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:56,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:00:56,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 112 [2022-12-12 13:00:56,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:00:56,349 INFO L130 PetriNetUnfolder]: 252/967 cut-off events. [2022-12-12 13:00:56,349 INFO L131 PetriNetUnfolder]: For 4138/5891 co-relation queries the response was YES. [2022-12-12 13:00:56,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4196 conditions, 967 events. 252/967 cut-off events. For 4138/5891 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7160 event pairs, 38 based on Foata normal form. 103/1041 useless extension candidates. Maximal degree in co-relation 787. Up to 224 conditions per place. [2022-12-12 13:00:56,352 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 0 selfloop transitions, 0 changer transitions 356/356 dead transitions. [2022-12-12 13:00:56,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 356 transitions, 3756 flow [2022-12-12 13:00:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 13:00:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 13:00:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 938 transitions. [2022-12-12 13:00:56,354 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2022-12-12 13:00:56,355 INFO L295 CegarLoopForPetriNet]: 107 programPoint places, 44 predicate places. [2022-12-12 13:00:56,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 356 transitions, 3756 flow [2022-12-12 13:00:56,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 356 transitions, 3479 flow, removed 108 selfloop flow, removed 4 redundant places. [2022-12-12 13:00:56,362 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 356 transitions, 3479 flow [2022-12-12 13:00:56,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.22222222222223) internal successors, (731), 9 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 13:00:56,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 13:00:56,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 13:00:56,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 13:00:56,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 13:00:56,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 13:00:56,366 INFO L445 BasicCegarLoop]: Path program histogram: [9] [2022-12-12 13:00:56,368 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 13:00:56,368 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 13:00:56,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 01:00:56 BasicIcfg [2022-12-12 13:00:56,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 13:00:56,372 INFO L158 Benchmark]: Toolchain (without parser) took 6368.71ms. Allocated memory was 190.8MB in the beginning and 405.8MB in the end (delta: 215.0MB). Free memory was 167.8MB in the beginning and 264.6MB in the end (delta: -96.8MB). Peak memory consumption was 118.7MB. Max. memory is 8.0GB. [2022-12-12 13:00:56,372 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory is still 168.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 13:00:56,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.05ms. Allocated memory is still 190.8MB. Free memory was 167.2MB in the beginning and 153.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 13:00:56,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.50ms. Allocated memory is still 190.8MB. Free memory was 153.1MB in the beginning and 151.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 13:00:56,373 INFO L158 Benchmark]: Boogie Preprocessor took 16.08ms. Allocated memory is still 190.8MB. Free memory was 151.5MB in the beginning and 149.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 13:00:56,375 INFO L158 Benchmark]: RCFGBuilder took 488.89ms. Allocated memory is still 190.8MB. Free memory was 149.9MB in the beginning and 130.5MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-12 13:00:56,375 INFO L158 Benchmark]: TraceAbstraction took 5673.83ms. Allocated memory was 190.8MB in the beginning and 405.8MB in the end (delta: 215.0MB). Free memory was 129.5MB in the beginning and 264.6MB in the end (delta: -135.1MB). Peak memory consumption was 79.9MB. Max. memory is 8.0GB. [2022-12-12 13:00:56,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory is still 168.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.05ms. Allocated memory is still 190.8MB. Free memory was 167.2MB in the beginning and 153.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.50ms. Allocated memory is still 190.8MB. Free memory was 153.1MB in the beginning and 151.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.08ms. Allocated memory is still 190.8MB. Free memory was 151.5MB in the beginning and 149.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 488.89ms. Allocated memory is still 190.8MB. Free memory was 149.9MB in the beginning and 130.5MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 5673.83ms. Allocated memory was 190.8MB in the beginning and 405.8MB in the end (delta: 215.0MB). Free memory was 129.5MB in the beginning and 264.6MB in the end (delta: -135.1MB). Peak memory consumption was 79.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 124]: 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, 136 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 499 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 499 mSDsluCounter, 434 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 301 mSDsCounter, 131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1583 IncrementalHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 131 mSolverCounterUnsat, 133 mSDtfsCounter, 1583 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3524occurred in iteration=8, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 2372 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 855 NumberOfCodeBlocks, 855 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 846 ConstructedInterpolants, 0 QuantifiedInterpolants, 2446 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 13:00:56,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...