/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:14:20,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:14:20,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:14:21,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:14:21,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:14:21,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:14:21,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:14:21,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:14:21,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:14:21,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:14:21,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:14:21,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:14:21,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:14:21,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:14:21,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:14:21,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:14:21,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:14:21,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:14:21,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:14:21,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:14:21,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:14:21,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:14:21,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:14:21,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:14:21,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:14:21,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:14:21,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:14:21,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:14:21,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:14:21,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 16:14:21,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 16:14:21,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 16:14:21,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 16:14:21,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 16:14:21,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 16:14:21,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 16:14:21,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 16:14:21,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 16:14:21,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:14:21,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:14:21,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:14:21,040 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 [2022-12-06 16:14:21,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:14:21,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:14:21,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:14:21,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:14:21,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:14:21,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:14:21,069 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:14:21,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:14:21,069 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:14:21,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:14:21,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:14:21,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:14:21,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:14:21,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:14:21,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:14:21,071 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:14:21,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:14:21,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:14:21,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:14:21,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:14:21,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:14:21,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:14:21,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:14:21,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:14:21,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:14:21,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:14:21,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:14:21,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:14:21,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:14:21,072 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:14:21,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:14:21,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:14:21,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:14:21,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:14:21,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:14:21,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:14:21,386 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:14:21,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2022-12-06 16:14:22,402 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:14:22,657 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:14:22,657 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2022-12-06 16:14:22,675 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f95cf19d5/be86cc7f6eb648beb9e279789dd1a1ec/FLAG98fc84f08 [2022-12-06 16:14:22,688 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f95cf19d5/be86cc7f6eb648beb9e279789dd1a1ec [2022-12-06 16:14:22,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:14:22,691 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:14:22,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:14:22,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:14:22,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:14:22,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:14:22" (1/1) ... [2022-12-06 16:14:22,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa62831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:22, skipping insertion in model container [2022-12-06 16:14:22,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:14:22" (1/1) ... [2022-12-06 16:14:22,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:14:22,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:14:22,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:14:22,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:14:22,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:14:22,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:14:22,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:14:22,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:14:22,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:14:22,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:14:22,965 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2022-12-06 16:14:22,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:14:22,973 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:14:23,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:14:23,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:14:23,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:14:23,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:14:23,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:14:23,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:14:23,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:14:23,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:14:23,019 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2022-12-06 16:14:23,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:14:23,051 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:14:23,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23 WrapperNode [2022-12-06 16:14:23,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:14:23,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:14:23,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:14:23,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:14:23,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,095 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-06 16:14:23,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:14:23,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:14:23,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:14:23,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:14:23,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:14:23,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:14:23,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:14:23,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:14:23,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (1/1) ... [2022-12-06 16:14:23,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:14:23,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:23,156 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) [2022-12-06 16:14:23,169 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 [2022-12-06 16:14:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-06 16:14:23,193 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-06 16:14:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-06 16:14:23,194 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-06 16:14:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:14:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 16:14:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:14:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:14:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:14:23,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:14:23,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 16:14:23,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:14:23,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:14:23,196 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:14:23,349 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:14:23,351 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:14:23,477 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:14:23,481 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:14:23,482 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-06 16:14:23,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:14:23 BoogieIcfgContainer [2022-12-06 16:14:23,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:14:23,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:14:23,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:14:23,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:14:23,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:14:22" (1/3) ... [2022-12-06 16:14:23,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b4270a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:14:23, skipping insertion in model container [2022-12-06 16:14:23,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:14:23" (2/3) ... [2022-12-06 16:14:23,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b4270a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:14:23, skipping insertion in model container [2022-12-06 16:14:23,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:14:23" (3/3) ... [2022-12-06 16:14:23,488 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2022-12-06 16:14:23,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:14:23,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:14:23,507 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:14:23,569 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-06 16:14:23,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2022-12-06 16:14:23,640 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-06 16:14:23,640 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:14:23,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-06 16:14:23,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2022-12-06 16:14:23,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2022-12-06 16:14:23,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:14:23,665 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;@28bf2e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:14:23,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 16:14:23,688 INFO L130 PetriNetUnfolder]: 4/54 cut-off events. [2022-12-06 16:14:23,688 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:14:23,689 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:23,689 INFO L213 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] [2022-12-06 16:14:23,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:23,693 INFO L85 PathProgramCache]: Analyzing trace with hash -869864902, now seen corresponding path program 1 times [2022-12-06 16:14:23,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:23,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656974598] [2022-12-06 16:14:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:23,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:24,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:24,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656974598] [2022-12-06 16:14:24,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656974598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:14:24,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:14:24,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:14:24,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927151503] [2022-12-06 16:14:24,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:14:24,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:14:24,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:14:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:14:24,186 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:24,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 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) [2022-12-06 16:14:24,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:24,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:24,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:24,339 INFO L130 PetriNetUnfolder]: 46/204 cut-off events. [2022-12-06 16:14:24,339 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 16:14:24,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 204 events. 46/204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 790 event pairs, 3 based on Foata normal form. 49/233 useless extension candidates. Maximal degree in co-relation 259. Up to 32 conditions per place. [2022-12-06 16:14:24,344 INFO L137 encePairwiseOnDemand]: 55/66 looper letters, 14 selfloop transitions, 9 changer transitions 23/88 dead transitions. [2022-12-06 16:14:24,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 263 flow [2022-12-06 16:14:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 16:14:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 16:14:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2022-12-06 16:14:24,361 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8681818181818182 [2022-12-06 16:14:24,366 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2022-12-06 16:14:24,366 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 263 flow [2022-12-06 16:14:24,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 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) [2022-12-06 16:14:24,367 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:24,367 INFO L213 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] [2022-12-06 16:14:24,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:14:24,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:24,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1673234708, now seen corresponding path program 1 times [2022-12-06 16:14:24,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:24,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921487887] [2022-12-06 16:14:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:24,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:24,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:24,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921487887] [2022-12-06 16:14:24,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921487887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:14:24,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:14:24,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:14:24,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616461526] [2022-12-06 16:14:24,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:14:24,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:14:24,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:14:24,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:14:24,516 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:24,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 88 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-06 16:14:24,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:24,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:24,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:24,647 INFO L130 PetriNetUnfolder]: 46/217 cut-off events. [2022-12-06 16:14:24,647 INFO L131 PetriNetUnfolder]: For 34/66 co-relation queries the response was YES. [2022-12-06 16:14:24,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 217 events. 46/217 cut-off events. For 34/66 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 887 event pairs, 0 based on Foata normal form. 5/204 useless extension candidates. Maximal degree in co-relation 343. Up to 35 conditions per place. [2022-12-06 16:14:24,652 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 19 selfloop transitions, 9 changer transitions 40/110 dead transitions. [2022-12-06 16:14:24,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 110 transitions, 473 flow [2022-12-06 16:14:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 16:14:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 16:14:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 443 transitions. [2022-12-06 16:14:24,654 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8390151515151515 [2022-12-06 16:14:24,655 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2022-12-06 16:14:24,655 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 110 transitions, 473 flow [2022-12-06 16:14:24,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-06 16:14:24,655 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:24,656 INFO L213 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] [2022-12-06 16:14:24,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:14:24,656 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1128844342, now seen corresponding path program 1 times [2022-12-06 16:14:24,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:24,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327420823] [2022-12-06 16:14:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:24,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:24,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327420823] [2022-12-06 16:14:24,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327420823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:14:24,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:14:24,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:14:24,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539909016] [2022-12-06 16:14:24,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:14:24,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:14:24,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:14:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:14:24,824 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:24,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 110 transitions, 473 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-06 16:14:24,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:24,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:24,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:24,929 INFO L130 PetriNetUnfolder]: 68/321 cut-off events. [2022-12-06 16:14:24,929 INFO L131 PetriNetUnfolder]: For 141/233 co-relation queries the response was YES. [2022-12-06 16:14:24,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 321 events. 68/321 cut-off events. For 141/233 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1599 event pairs, 0 based on Foata normal form. 24/318 useless extension candidates. Maximal degree in co-relation 620. Up to 59 conditions per place. [2022-12-06 16:14:24,931 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 25 selfloop transitions, 11 changer transitions 60/138 dead transitions. [2022-12-06 16:14:24,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 138 transitions, 819 flow [2022-12-06 16:14:24,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 16:14:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 16:14:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 554 transitions. [2022-12-06 16:14:24,933 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8393939393939394 [2022-12-06 16:14:24,934 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2022-12-06 16:14:24,935 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 138 transitions, 819 flow [2022-12-06 16:14:24,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-06 16:14:24,935 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:24,935 INFO L213 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] [2022-12-06 16:14:24,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:14:24,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:24,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1724335678, now seen corresponding path program 2 times [2022-12-06 16:14:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:24,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180570804] [2022-12-06 16:14:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:25,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:25,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180570804] [2022-12-06 16:14:25,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180570804] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:14:25,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:14:25,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:14:25,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904253181] [2022-12-06 16:14:25,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:14:25,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:14:25,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:25,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:14:25,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:14:25,086 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:25,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 138 transitions, 819 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-06 16:14:25,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:25,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:25,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:25,189 INFO L130 PetriNetUnfolder]: 69/329 cut-off events. [2022-12-06 16:14:25,189 INFO L131 PetriNetUnfolder]: For 277/380 co-relation queries the response was YES. [2022-12-06 16:14:25,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 329 events. 69/329 cut-off events. For 277/380 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1664 event pairs, 0 based on Foata normal form. 25/329 useless extension candidates. Maximal degree in co-relation 741. Up to 57 conditions per place. [2022-12-06 16:14:25,191 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 22 selfloop transitions, 12 changer transitions 76/152 dead transitions. [2022-12-06 16:14:25,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 152 transitions, 1137 flow [2022-12-06 16:14:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:14:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:14:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 492 transitions. [2022-12-06 16:14:25,193 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8282828282828283 [2022-12-06 16:14:25,193 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2022-12-06 16:14:25,193 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 152 transitions, 1137 flow [2022-12-06 16:14:25,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2022-12-06 16:14:25,194 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:25,194 INFO L213 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] [2022-12-06 16:14:25,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 16:14:25,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:25,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash 326321538, now seen corresponding path program 1 times [2022-12-06 16:14:25,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:25,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154430794] [2022-12-06 16:14:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:25,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154430794] [2022-12-06 16:14:25,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154430794] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:14:25,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:14:25,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:14:25,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531462745] [2022-12-06 16:14:25,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:14:25,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:14:25,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:14:25,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:14:25,280 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:25,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 152 transitions, 1137 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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) [2022-12-06 16:14:25,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:25,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:25,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:25,420 INFO L130 PetriNetUnfolder]: 93/451 cut-off events. [2022-12-06 16:14:25,421 INFO L131 PetriNetUnfolder]: For 594/721 co-relation queries the response was YES. [2022-12-06 16:14:25,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 451 events. 93/451 cut-off events. For 594/721 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2614 event pairs, 0 based on Foata normal form. 31/444 useless extension candidates. Maximal degree in co-relation 1155. Up to 79 conditions per place. [2022-12-06 16:14:25,423 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 23 selfloop transitions, 21 changer transitions 103/189 dead transitions. [2022-12-06 16:14:25,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 189 transitions, 1787 flow [2022-12-06 16:14:25,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-06 16:14:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-06 16:14:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 707 transitions. [2022-12-06 16:14:25,432 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.824009324009324 [2022-12-06 16:14:25,433 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2022-12-06 16:14:25,434 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 189 transitions, 1787 flow [2022-12-06 16:14:25,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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) [2022-12-06 16:14:25,440 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:25,440 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:25,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 16:14:25,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:25,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1848413431, now seen corresponding path program 1 times [2022-12-06 16:14:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:25,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933336640] [2022-12-06 16:14:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:25,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:25,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:25,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933336640] [2022-12-06 16:14:25,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933336640] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:25,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401362872] [2022-12-06 16:14:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:25,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:25,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:25,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:25,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 16:14:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:25,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-06 16:14:25,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:25,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:14:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:25,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401362872] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:14:25,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:14:25,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-12-06 16:14:25,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320947998] [2022-12-06 16:14:25,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:14:25,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-06 16:14:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-06 16:14:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-06 16:14:25,972 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:25,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 189 transitions, 1787 flow. Second operand has 13 states, 13 states have (on average 52.69230769230769) internal successors, (685), 13 states have internal predecessors, (685), 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) [2022-12-06 16:14:25,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:25,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:25,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:26,228 INFO L130 PetriNetUnfolder]: 161/787 cut-off events. [2022-12-06 16:14:26,228 INFO L131 PetriNetUnfolder]: For 1444/1668 co-relation queries the response was YES. [2022-12-06 16:14:26,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2320 conditions, 787 events. 161/787 cut-off events. For 1444/1668 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4595 event pairs, 0 based on Foata normal form. 49/768 useless extension candidates. Maximal degree in co-relation 2265. Up to 147 conditions per place. [2022-12-06 16:14:26,232 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 39 selfloop transitions, 17 changer transitions 196/294 dead transitions. [2022-12-06 16:14:26,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 294 transitions, 3537 flow [2022-12-06 16:14:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-06 16:14:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-06 16:14:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1209 transitions. [2022-12-06 16:14:26,234 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8326446280991735 [2022-12-06 16:14:26,235 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 65 predicate places. [2022-12-06 16:14:26,235 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 294 transitions, 3537 flow [2022-12-06 16:14:26,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.69230769230769) internal successors, (685), 13 states have internal predecessors, (685), 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) [2022-12-06 16:14:26,236 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:26,236 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:26,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 16:14:26,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-06 16:14:26,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:26,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:26,441 INFO L85 PathProgramCache]: Analyzing trace with hash 508150273, now seen corresponding path program 2 times [2022-12-06 16:14:26,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:26,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756716793] [2022-12-06 16:14:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:26,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:26,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:26,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756716793] [2022-12-06 16:14:26,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756716793] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:26,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752379200] [2022-12-06 16:14:26,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 16:14:26,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:26,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:26,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:26,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 16:14:26,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 16:14:26,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:14:26,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-06 16:14:26,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:26,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:14:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:26,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752379200] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:14:26,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:14:26,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-12-06 16:14:26,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663208862] [2022-12-06 16:14:26,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:14:26,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 16:14:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 16:14:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-12-06 16:14:26,868 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:26,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 294 transitions, 3537 flow. Second operand has 14 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 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) [2022-12-06 16:14:26,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:26,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:26,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:27,389 INFO L130 PetriNetUnfolder]: 259/1303 cut-off events. [2022-12-06 16:14:27,390 INFO L131 PetriNetUnfolder]: For 3186/3538 co-relation queries the response was YES. [2022-12-06 16:14:27,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 1303 events. 259/1303 cut-off events. For 3186/3538 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 9621 event pairs, 0 based on Foata normal form. 69/1260 useless extension candidates. Maximal degree in co-relation 4101. Up to 240 conditions per place. [2022-12-06 16:14:27,396 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 45 selfloop transitions, 44 changer transitions 316/447 dead transitions. [2022-12-06 16:14:27,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 447 transitions, 6475 flow [2022-12-06 16:14:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-06 16:14:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-06 16:14:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1685 transitions. [2022-12-06 16:14:27,400 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8235581622678397 [2022-12-06 16:14:27,400 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 95 predicate places. [2022-12-06 16:14:27,400 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 447 transitions, 6475 flow [2022-12-06 16:14:27,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 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) [2022-12-06 16:14:27,401 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:27,401 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:27,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 16:14:27,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-06 16:14:27,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:27,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash 433568143, now seen corresponding path program 1 times [2022-12-06 16:14:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:27,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539177083] [2022-12-06 16:14:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:27,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:27,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:27,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539177083] [2022-12-06 16:14:27,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539177083] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:27,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573848063] [2022-12-06 16:14:27,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:27,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:27,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:27,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:27,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 16:14:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:27,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-06 16:14:27,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:27,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:14:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:27,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573848063] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:14:27,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:14:27,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-12-06 16:14:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491198430] [2022-12-06 16:14:27,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:14:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-06 16:14:27,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:27,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-06 16:14:27,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-06 16:14:27,973 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:27,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 447 transitions, 6475 flow. Second operand has 15 states, 15 states have (on average 52.46666666666667) internal successors, (787), 15 states have internal predecessors, (787), 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) [2022-12-06 16:14:27,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:27,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:27,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:28,452 INFO L130 PetriNetUnfolder]: 426/2115 cut-off events. [2022-12-06 16:14:28,452 INFO L131 PetriNetUnfolder]: For 6698/7363 co-relation queries the response was YES. [2022-12-06 16:14:28,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7444 conditions, 2115 events. 426/2115 cut-off events. For 6698/7363 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 18007 event pairs, 0 based on Foata normal form. 110/2038 useless extension candidates. Maximal degree in co-relation 7379. Up to 404 conditions per place. [2022-12-06 16:14:28,463 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 68 selfloop transitions, 60 changer transitions 515/685 dead transitions. [2022-12-06 16:14:28,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 685 transitions, 11555 flow [2022-12-06 16:14:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-06 16:14:28,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-06 16:14:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1746 transitions. [2022-12-06 16:14:28,468 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8267045454545454 [2022-12-06 16:14:28,468 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 126 predicate places. [2022-12-06 16:14:28,469 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 685 transitions, 11555 flow [2022-12-06 16:14:28,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 52.46666666666667) internal successors, (787), 15 states have internal predecessors, (787), 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) [2022-12-06 16:14:28,469 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:28,469 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:28,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 16:14:28,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:28,674 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:28,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:28,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1512865165, now seen corresponding path program 2 times [2022-12-06 16:14:28,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:28,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951751779] [2022-12-06 16:14:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:28,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:28,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:28,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951751779] [2022-12-06 16:14:28,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951751779] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:28,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545785553] [2022-12-06 16:14:28,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 16:14:28,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:28,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:28,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:28,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 16:14:28,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 16:14:28,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:14:28,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-06 16:14:28,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:28,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:14:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:28,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545785553] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:14:28,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:14:28,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-12-06 16:14:28,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727425272] [2022-12-06 16:14:28,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:14:28,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 16:14:28,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 16:14:28,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-12-06 16:14:28,989 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:28,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 685 transitions, 11555 flow. Second operand has 16 states, 16 states have (on average 52.5) internal successors, (840), 16 states have internal predecessors, (840), 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) [2022-12-06 16:14:28,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:28,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:28,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:29,771 INFO L130 PetriNetUnfolder]: 513/2517 cut-off events. [2022-12-06 16:14:29,772 INFO L131 PetriNetUnfolder]: For 10342/11390 co-relation queries the response was YES. [2022-12-06 16:14:29,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9735 conditions, 2517 events. 513/2517 cut-off events. For 10342/11390 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 22270 event pairs, 0 based on Foata normal form. 176/2480 useless extension candidates. Maximal degree in co-relation 9665. Up to 490 conditions per place. [2022-12-06 16:14:29,784 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 73 selfloop transitions, 83 changer transitions 643/841 dead transitions. [2022-12-06 16:14:29,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 841 transitions, 15947 flow [2022-12-06 16:14:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-06 16:14:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-06 16:14:29,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1792 transitions. [2022-12-06 16:14:29,787 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.82277318640955 [2022-12-06 16:14:29,787 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 158 predicate places. [2022-12-06 16:14:29,787 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 841 transitions, 15947 flow [2022-12-06 16:14:29,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 52.5) internal successors, (840), 16 states have internal predecessors, (840), 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) [2022-12-06 16:14:29,788 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:29,788 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:29,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-06 16:14:29,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:29,994 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:29,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:29,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1307347199, now seen corresponding path program 3 times [2022-12-06 16:14:29,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:29,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959735841] [2022-12-06 16:14:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:29,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:30,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:30,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959735841] [2022-12-06 16:14:30,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959735841] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:30,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986044412] [2022-12-06 16:14:30,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 16:14:30,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:30,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:30,137 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:30,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 16:14:30,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-06 16:14:30,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:14:30,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 16:14:30,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:30,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:14:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:30,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986044412] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:14:30,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:14:30,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-12-06 16:14:30,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119473194] [2022-12-06 16:14:30,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:14:30,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-06 16:14:30,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-06 16:14:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-12-06 16:14:30,426 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:30,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 841 transitions, 15947 flow. Second operand has 23 states, 23 states have (on average 52.391304347826086) internal successors, (1205), 23 states have internal predecessors, (1205), 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) [2022-12-06 16:14:30,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:30,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:30,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:31,612 INFO L130 PetriNetUnfolder]: 756/3720 cut-off events. [2022-12-06 16:14:31,612 INFO L131 PetriNetUnfolder]: For 18426/19474 co-relation queries the response was YES. [2022-12-06 16:14:31,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15449 conditions, 3720 events. 756/3720 cut-off events. For 18426/19474 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 32559 event pairs, 0 based on Foata normal form. 122/3500 useless extension candidates. Maximal degree in co-relation 15374. Up to 734 conditions per place. [2022-12-06 16:14:31,633 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 98 selfloop transitions, 120 changer transitions 952/1212 dead transitions. [2022-12-06 16:14:31,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1212 transitions, 25693 flow [2022-12-06 16:14:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-06 16:14:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-06 16:14:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 2983 transitions. [2022-12-06 16:14:31,637 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8217630853994491 [2022-12-06 16:14:31,637 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 212 predicate places. [2022-12-06 16:14:31,637 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 1212 transitions, 25693 flow [2022-12-06 16:14:31,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 52.391304347826086) internal successors, (1205), 23 states have internal predecessors, (1205), 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) [2022-12-06 16:14:31,638 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:31,638 INFO L213 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:31,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 16:14:31,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-06 16:14:31,844 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash -551844062, now seen corresponding path program 4 times [2022-12-06 16:14:31,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:31,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235031454] [2022-12-06 16:14:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:32,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:32,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235031454] [2022-12-06 16:14:32,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235031454] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:32,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852532364] [2022-12-06 16:14:32,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 16:14:32,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:32,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:32,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:32,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 16:14:32,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 16:14:32,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:14:32,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-06 16:14:32,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:32,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:14:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:32,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852532364] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:14:32,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:14:32,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2022-12-06 16:14:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100491740] [2022-12-06 16:14:32,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:14:32,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-06 16:14:32,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-06 16:14:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2022-12-06 16:14:32,880 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:32,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 1212 transitions, 25693 flow. Second operand has 29 states, 29 states have (on average 52.310344827586206) internal successors, (1517), 29 states have internal predecessors, (1517), 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) [2022-12-06 16:14:32,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:32,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:32,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:34,709 INFO L130 PetriNetUnfolder]: 1288/6485 cut-off events. [2022-12-06 16:14:34,709 INFO L131 PetriNetUnfolder]: For 39063/40884 co-relation queries the response was YES. [2022-12-06 16:14:34,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28395 conditions, 6485 events. 1288/6485 cut-off events. For 39063/40884 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 62197 event pairs, 0 based on Foata normal form. 245/6128 useless extension candidates. Maximal degree in co-relation 28315. Up to 1253 conditions per place. [2022-12-06 16:14:34,739 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 183 selfloop transitions, 119 changer transitions 1687/2031 dead transitions. [2022-12-06 16:14:34,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 2031 transitions, 47675 flow [2022-12-06 16:14:34,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-06 16:14:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-12-06 16:14:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3144 transitions. [2022-12-06 16:14:34,746 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8213166144200627 [2022-12-06 16:14:34,747 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 269 predicate places. [2022-12-06 16:14:34,747 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 2031 transitions, 47675 flow [2022-12-06 16:14:34,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 52.310344827586206) internal successors, (1517), 29 states have internal predecessors, (1517), 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) [2022-12-06 16:14:34,748 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:34,748 INFO L213 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:34,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 16:14:34,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:34,954 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:34,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1211380588, now seen corresponding path program 5 times [2022-12-06 16:14:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:34,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580780221] [2022-12-06 16:14:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:34,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:35,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:35,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580780221] [2022-12-06 16:14:35,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580780221] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:35,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678315396] [2022-12-06 16:14:35,231 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 16:14:35,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:35,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:35,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:35,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 16:14:35,297 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-12-06 16:14:35,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:14:35,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-06 16:14:35,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:35,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:14:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:35,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678315396] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:14:35,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:14:35,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 31 [2022-12-06 16:14:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358119279] [2022-12-06 16:14:35,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:14:35,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-06 16:14:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-06 16:14:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-12-06 16:14:35,920 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:35,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 2031 transitions, 47675 flow. Second operand has 31 states, 31 states have (on average 52.25806451612903) internal successors, (1620), 31 states have internal predecessors, (1620), 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) [2022-12-06 16:14:35,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:35,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:35,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:38,246 INFO L130 PetriNetUnfolder]: 1616/8034 cut-off events. [2022-12-06 16:14:38,246 INFO L131 PetriNetUnfolder]: For 57396/59715 co-relation queries the response was YES. [2022-12-06 16:14:38,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38007 conditions, 8034 events. 1616/8034 cut-off events. For 57396/59715 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 79099 event pairs, 0 based on Foata normal form. 223/7507 useless extension candidates. Maximal degree in co-relation 37922. Up to 1585 conditions per place. [2022-12-06 16:14:38,275 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 187 selfloop transitions, 183 changer transitions 2125/2537 dead transitions. [2022-12-06 16:14:38,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 2537 transitions, 64795 flow [2022-12-06 16:14:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-06 16:14:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-06 16:14:38,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3261 transitions. [2022-12-06 16:14:38,283 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8234848484848485 [2022-12-06 16:14:38,284 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 328 predicate places. [2022-12-06 16:14:38,284 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 2537 transitions, 64795 flow [2022-12-06 16:14:38,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 52.25806451612903) internal successors, (1620), 31 states have internal predecessors, (1620), 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) [2022-12-06 16:14:38,285 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:38,286 INFO L213 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:38,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 16:14:38,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:38,490 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:38,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1854970110, now seen corresponding path program 6 times [2022-12-06 16:14:38,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:38,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437166140] [2022-12-06 16:14:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:38,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:38,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:38,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437166140] [2022-12-06 16:14:38,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437166140] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:38,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971792889] [2022-12-06 16:14:38,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 16:14:38,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:38,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:38,803 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:38,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 16:14:38,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-12-06 16:14:38,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:14:38,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-06 16:14:38,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:39,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:14:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:39,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971792889] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:14:39,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:14:39,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 30 [2022-12-06 16:14:39,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871672380] [2022-12-06 16:14:39,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:14:39,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 16:14:39,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:39,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 16:14:39,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2022-12-06 16:14:39,283 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:39,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 2537 transitions, 64795 flow. Second operand has 30 states, 30 states have (on average 52.3) internal successors, (1569), 30 states have internal predecessors, (1569), 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) [2022-12-06 16:14:39,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:39,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:39,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:42,323 INFO L130 PetriNetUnfolder]: 1698/8499 cut-off events. [2022-12-06 16:14:42,323 INFO L131 PetriNetUnfolder]: For 72837/75566 co-relation queries the response was YES. [2022-12-06 16:14:42,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42633 conditions, 8499 events. 1698/8499 cut-off events. For 72837/75566 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 84909 event pairs, 0 based on Foata normal form. 274/7984 useless extension candidates. Maximal degree in co-relation 42543. Up to 1674 conditions per place. [2022-12-06 16:14:42,353 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 188 selfloop transitions, 223 changer transitions 2212/2665 dead transitions. [2022-12-06 16:14:42,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 2665 transitions, 73355 flow [2022-12-06 16:14:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-12-06 16:14:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2022-12-06 16:14:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 3793 transitions. [2022-12-06 16:14:42,357 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.820995670995671 [2022-12-06 16:14:42,357 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 397 predicate places. [2022-12-06 16:14:42,357 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 2665 transitions, 73355 flow [2022-12-06 16:14:42,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 52.3) internal successors, (1569), 30 states have internal predecessors, (1569), 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) [2022-12-06 16:14:42,358 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:42,358 INFO L213 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:42,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-06 16:14:42,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-06 16:14:42,562 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:42,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:42,563 INFO L85 PathProgramCache]: Analyzing trace with hash -660708371, now seen corresponding path program 7 times [2022-12-06 16:14:42,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:42,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766692886] [2022-12-06 16:14:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:42,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:42,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766692886] [2022-12-06 16:14:42,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766692886] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:42,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261140299] [2022-12-06 16:14:42,869 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 16:14:42,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:42,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:42,870 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:42,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 16:14:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:42,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-06 16:14:42,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:43,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:14:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:43,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261140299] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:14:43,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:14:43,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 30 [2022-12-06 16:14:43,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707410186] [2022-12-06 16:14:43,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:14:43,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 16:14:43,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:43,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 16:14:43,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2022-12-06 16:14:43,338 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:43,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 2665 transitions, 73355 flow. Second operand has 30 states, 30 states have (on average 52.333333333333336) internal successors, (1570), 30 states have internal predecessors, (1570), 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) [2022-12-06 16:14:43,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:43,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:43,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:46,932 INFO L130 PetriNetUnfolder]: 2020/10090 cut-off events. [2022-12-06 16:14:46,932 INFO L131 PetriNetUnfolder]: For 100137/102997 co-relation queries the response was YES. [2022-12-06 16:14:46,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53751 conditions, 10090 events. 2020/10090 cut-off events. For 100137/102997 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 102223 event pairs, 0 based on Foata normal form. 321/9454 useless extension candidates. Maximal degree in co-relation 53656. Up to 2003 conditions per place. [2022-12-06 16:14:46,966 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 219 selfloop transitions, 257 changer transitions 2628/3146 dead transitions. [2022-12-06 16:14:46,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 3146 transitions, 93017 flow [2022-12-06 16:14:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-06 16:14:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-12-06 16:14:46,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 4335 transitions. [2022-12-06 16:14:46,969 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8210227272727273 [2022-12-06 16:14:46,969 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 476 predicate places. [2022-12-06 16:14:46,969 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 3146 transitions, 93017 flow [2022-12-06 16:14:46,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 52.333333333333336) internal successors, (1570), 30 states have internal predecessors, (1570), 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) [2022-12-06 16:14:46,970 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:46,970 INFO L213 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:46,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-06 16:14:47,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-06 16:14:47,174 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:47,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:47,175 INFO L85 PathProgramCache]: Analyzing trace with hash -709680551, now seen corresponding path program 8 times [2022-12-06 16:14:47,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:47,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912491558] [2022-12-06 16:14:47,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:47,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:47,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:47,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912491558] [2022-12-06 16:14:47,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912491558] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:47,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795223373] [2022-12-06 16:14:47,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 16:14:47,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:47,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:47,509 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:47,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-06 16:14:47,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 16:14:47,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:14:47,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-06 16:14:47,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:47,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 16:14:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:14:47,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795223373] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 16:14:47,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 16:14:47,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2022-12-06 16:14:47,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544726660] [2022-12-06 16:14:47,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 16:14:47,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-06 16:14:47,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:47,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-06 16:14:47,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2022-12-06 16:14:47,972 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-06 16:14:47,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 3146 transitions, 93017 flow. Second operand has 26 states, 26 states have (on average 52.15384615384615) internal successors, (1356), 26 states have internal predecessors, (1356), 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) [2022-12-06 16:14:47,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:47,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-06 16:14:47,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:14:51,824 INFO L130 PetriNetUnfolder]: 2067/10234 cut-off events. [2022-12-06 16:14:51,825 INFO L131 PetriNetUnfolder]: For 116618/120327 co-relation queries the response was YES. [2022-12-06 16:14:51,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58108 conditions, 10234 events. 2067/10234 cut-off events. For 116618/120327 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 103357 event pairs, 0 based on Foata normal form. 330/9618 useless extension candidates. Maximal degree in co-relation 58008. Up to 2051 conditions per place. [2022-12-06 16:14:51,867 INFO L137 encePairwiseOnDemand]: 58/66 looper letters, 242 selfloop transitions, 247 changer transitions 2688/3219 dead transitions. [2022-12-06 16:14:51,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 3219 transitions, 101547 flow [2022-12-06 16:14:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-06 16:14:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-12-06 16:14:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3569 transitions. [2022-12-06 16:14:51,869 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8193296602387512 [2022-12-06 16:14:51,870 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 541 predicate places. [2022-12-06 16:14:51,870 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 3219 transitions, 101547 flow [2022-12-06 16:14:51,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 52.15384615384615) internal successors, (1356), 26 states have internal predecessors, (1356), 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) [2022-12-06 16:14:51,870 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:14:51,870 INFO L213 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:14:51,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-06 16:14:52,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-06 16:14:52,076 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:14:52,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:14:52,076 INFO L85 PathProgramCache]: Analyzing trace with hash 478273671, now seen corresponding path program 9 times [2022-12-06 16:14:52,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:14:52,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946512929] [2022-12-06 16:14:52,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:14:52,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:14:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:14:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 384 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 16:14:52,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:14:52,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946512929] [2022-12-06 16:14:52,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946512929] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:14:52,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844957949] [2022-12-06 16:14:52,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 16:14:52,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:14:52,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:14:52,473 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 16:14:52,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-06 16:14:52,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-06 16:14:52,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 16:14:52,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-06 16:14:52,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:14:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 16:14:52,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 16:14:52,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844957949] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:14:52,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 16:14:52,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2022-12-06 16:14:52,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153636939] [2022-12-06 16:14:52,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:14:52,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-06 16:14:52,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:14:52,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-06 16:14:52,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-12-06 16:14:52,675 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 66 [2022-12-06 16:14:52,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 3219 transitions, 101547 flow. Second operand has 23 states, 23 states have (on average 55.91304347826087) internal successors, (1286), 23 states have internal predecessors, (1286), 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) [2022-12-06 16:14:52,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:14:52,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 66 [2022-12-06 16:14:52,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:15:10,535 INFO L130 PetriNetUnfolder]: 9522/39550 cut-off events. [2022-12-06 16:15:10,535 INFO L131 PetriNetUnfolder]: For 480177/501223 co-relation queries the response was YES. [2022-12-06 16:15:10,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243338 conditions, 39550 events. 9522/39550 cut-off events. For 480177/501223 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 528323 event pairs, 0 based on Foata normal form. 172/36263 useless extension candidates. Maximal degree in co-relation 243236. Up to 8163 conditions per place. [2022-12-06 16:15:10,793 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 0 selfloop transitions, 0 changer transitions 2825/2825 dead transitions. [2022-12-06 16:15:10,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 2825 transitions, 87859 flow [2022-12-06 16:15:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-06 16:15:10,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-06 16:15:10,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1868 transitions. [2022-12-06 16:15:10,794 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8576675849403123 [2022-12-06 16:15:10,795 INFO L294 CegarLoopForPetriNet]: 66 programPoint places, 568 predicate places. [2022-12-06 16:15:10,795 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 2825 transitions, 87859 flow [2022-12-06 16:15:10,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 55.91304347826087) internal successors, (1286), 23 states have internal predecessors, (1286), 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) [2022-12-06 16:15:10,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 16:15:10,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 16:15:10,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 16:15:10,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-06 16:15:11,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-06 16:15:11,002 INFO L458 BasicCegarLoop]: Path program histogram: [9, 2, 2, 1, 1, 1] [2022-12-06 16:15:11,005 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:15:11,005 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:15:11,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:15:11 BasicIcfg [2022-12-06 16:15:11,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:15:11,008 INFO L158 Benchmark]: Toolchain (without parser) took 48317.40ms. Allocated memory was 255.9MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 232.0MB in the beginning and 375.3MB in the end (delta: -143.4MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-12-06 16:15:11,008 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 232.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:15:11,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.77ms. Allocated memory is still 255.9MB. Free memory was 232.0MB in the beginning and 211.8MB in the end (delta: 20.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-06 16:15:11,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.00ms. Allocated memory is still 255.9MB. Free memory was 211.8MB in the beginning and 209.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:15:11,008 INFO L158 Benchmark]: Boogie Preprocessor took 32.19ms. Allocated memory is still 255.9MB. Free memory was 209.7MB in the beginning and 208.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 16:15:11,008 INFO L158 Benchmark]: RCFGBuilder took 354.18ms. Allocated memory is still 255.9MB. Free memory was 208.1MB in the beginning and 195.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-06 16:15:11,009 INFO L158 Benchmark]: TraceAbstraction took 47522.94ms. Allocated memory was 255.9MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 194.0MB in the beginning and 375.3MB in the end (delta: -181.4MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-12-06 16:15:11,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 232.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 360.77ms. Allocated memory is still 255.9MB. Free memory was 232.0MB in the beginning and 211.8MB in the end (delta: 20.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.00ms. Allocated memory is still 255.9MB. Free memory was 211.8MB in the beginning and 209.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.19ms. Allocated memory is still 255.9MB. Free memory was 209.7MB in the beginning and 208.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 354.18ms. Allocated memory is still 255.9MB. Free memory was 208.1MB in the beginning and 195.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 47522.94ms. Allocated memory was 255.9MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 194.0MB in the beginning and 375.3MB in the end (delta: -181.4MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: 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 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 47.4s, OverallIterations: 16, TraceHistogramMax: 11, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 37.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3983 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3983 mSDsluCounter, 264 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 183 mSDsCounter, 555 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2899 IncrementalHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 555 mSolverCounterUnsat, 81 mSDtfsCounter, 2899 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2456 GetRequests, 1662 SyntacticMatches, 58 SemanticMatches, 736 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17030 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101547occurred in iteration=15, InterpolantAutomatonStates: 590, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 2080 NumberOfCodeBlocks, 2080 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 2858 ConstructedInterpolants, 0 QuantifiedInterpolants, 10315 SizeOfPredicates, 133 NumberOfNonLiveVariables, 2191 ConjunctsInSsa, 186 ConjunctsInUnsatCore, 37 InterpolantComputations, 6 PerfectInterpolantSequences, 831/4864 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! [2022-12-06 16:15:11,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...