/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:00:40,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:00:40,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:00:40,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:00:40,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:00:40,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:00:40,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:00:40,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:00:40,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:00:40,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:00:40,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:00:40,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:00:40,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:00:40,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:00:40,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:00:40,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:00:40,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:00:40,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:00:40,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:00:40,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:00:40,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:00:40,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:00:40,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:00:40,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:00:40,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:00:40,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:00:40,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:00:40,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:00:40,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:00:40,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:00:40,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:00:40,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:00:40,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:00:40,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:00:40,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:00:40,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:00:40,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:00:40,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:00:40,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:00:40,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:00:40,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:00:40,169 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 [2022-09-20 21:00:40,196 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:00:40,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:00:40,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:00:40,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:00:40,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:00:40,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:00:40,198 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:00:40,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:00:40,199 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:00:40,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:00:40,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:00:40,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:00:40,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:00:40,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:00:40,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:00:40,200 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:00:40,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:00:40,200 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:00:40,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:00:40,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:00:40,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:00:40,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:00:40,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:00:40,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:00:40,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:00:40,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:00:40,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:00:40,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:00:40,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:00:40,203 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:00:40,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:00:40,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:00:40,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:00:40,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:00:40,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:00:40,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:00:40,465 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:00:40,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2022-09-20 21:00:40,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5f8de7d3/21a8c9379e1a4b8888362ef1edabe0c6/FLAGc4a764ef1 [2022-09-20 21:00:40,885 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:00:40,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2022-09-20 21:00:40,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5f8de7d3/21a8c9379e1a4b8888362ef1edabe0c6/FLAGc4a764ef1 [2022-09-20 21:00:40,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5f8de7d3/21a8c9379e1a4b8888362ef1edabe0c6 [2022-09-20 21:00:40,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:00:40,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:00:40,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:00:40,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:00:40,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:00:40,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:00:40" (1/1) ... [2022-09-20 21:00:40,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237bcac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:40, skipping insertion in model container [2022-09-20 21:00:40,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:00:40" (1/1) ... [2022-09-20 21:00:40,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:00:40,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:00:41,211 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c[4210,4223] [2022-09-20 21:00:41,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:00:41,235 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:00:41,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c[4210,4223] [2022-09-20 21:00:41,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:00:41,294 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:00:41,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41 WrapperNode [2022-09-20 21:00:41,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:00:41,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:00:41,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:00:41,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:00:41,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (1/1) ... [2022-09-20 21:00:41,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (1/1) ... [2022-09-20 21:00:41,355 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 235 [2022-09-20 21:00:41,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:00:41,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:00:41,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:00:41,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:00:41,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (1/1) ... [2022-09-20 21:00:41,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (1/1) ... [2022-09-20 21:00:41,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (1/1) ... [2022-09-20 21:00:41,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (1/1) ... [2022-09-20 21:00:41,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (1/1) ... [2022-09-20 21:00:41,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (1/1) ... [2022-09-20 21:00:41,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (1/1) ... [2022-09-20 21:00:41,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:00:41,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:00:41,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:00:41,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:00:41,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (1/1) ... [2022-09-20 21:00:41,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:00:41,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:00:41,433 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) [2022-09-20 21:00:41,455 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 [2022-09-20 21:00:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:00:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:00:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:00:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:00:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:00:41,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:00:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:00:41,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:00:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 21:00:41,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 21:00:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:00:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 21:00:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 21:00:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:00:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:00:41,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:00:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:00:41,485 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 21:00:41,556 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:00:41,557 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:00:41,918 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:00:42,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:00:42,024 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-09-20 21:00:42,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:00:42 BoogieIcfgContainer [2022-09-20 21:00:42,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:00:42,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:00:42,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:00:42,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:00:42,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:00:40" (1/3) ... [2022-09-20 21:00:42,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11df1876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:00:42, skipping insertion in model container [2022-09-20 21:00:42,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:41" (2/3) ... [2022-09-20 21:00:42,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11df1876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:00:42, skipping insertion in model container [2022-09-20 21:00:42,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:00:42" (3/3) ... [2022-09-20 21:00:42,036 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-09-20 21:00:42,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:00:42,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:00:42,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:00:42,117 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 21:00:42,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 186 transitions, 396 flow [2022-09-20 21:00:42,214 INFO L130 PetriNetUnfolder]: 7/183 cut-off events. [2022-09-20 21:00:42,214 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:00:42,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 7/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-09-20 21:00:42,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 186 transitions, 396 flow [2022-09-20 21:00:42,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 172 transitions, 362 flow [2022-09-20 21:00:42,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:00:42,236 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;@613c9a35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:00:42,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 21:00:42,303 INFO L130 PetriNetUnfolder]: 7/171 cut-off events. [2022-09-20 21:00:42,303 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:00:42,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:42,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:00:42,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:00:42,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:42,311 INFO L85 PathProgramCache]: Analyzing trace with hash 376216853, now seen corresponding path program 1 times [2022-09-20 21:00:42,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:42,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408401717] [2022-09-20 21:00:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:42,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:00:42,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:42,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408401717] [2022-09-20 21:00:42,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408401717] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:00:42,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:00:42,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 21:00:42,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704439243] [2022-09-20 21:00:42,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:00:42,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:00:42,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:42,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:00:42,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:00:42,802 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 186 [2022-09-20 21:00:42,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 362 flow. Second operand has 8 states, 8 states have (on average 127.125) internal successors, (1017), 8 states have internal predecessors, (1017), 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) [2022-09-20 21:00:42,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:42,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 186 [2022-09-20 21:00:42,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:00:43,231 INFO L130 PetriNetUnfolder]: 312/872 cut-off events. [2022-09-20 21:00:43,232 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-09-20 21:00:43,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 872 events. 312/872 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4391 event pairs, 311 based on Foata normal form. 7/866 useless extension candidates. Maximal degree in co-relation 1300. Up to 559 conditions per place. [2022-09-20 21:00:43,241 INFO L137 encePairwiseOnDemand]: 169/186 looper letters, 51 selfloop transitions, 6 changer transitions 15/180 dead transitions. [2022-09-20 21:00:43,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 180 transitions, 522 flow [2022-09-20 21:00:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:00:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:00:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1292 transitions. [2022-09-20 21:00:43,259 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6946236559139785 [2022-09-20 21:00:43,259 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1292 transitions. [2022-09-20 21:00:43,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1292 transitions. [2022-09-20 21:00:43,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:00:43,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1292 transitions. [2022-09-20 21:00:43,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.2) internal successors, (1292), 10 states have internal predecessors, (1292), 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) [2022-09-20 21:00:43,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 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) [2022-09-20 21:00:43,280 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 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) [2022-09-20 21:00:43,281 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 362 flow. Second operand 10 states and 1292 transitions. [2022-09-20 21:00:43,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 180 transitions, 522 flow [2022-09-20 21:00:43,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 180 transitions, 510 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 21:00:43,290 INFO L231 Difference]: Finished difference. Result has 182 places, 162 transitions, 354 flow [2022-09-20 21:00:43,292 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=182, PETRI_TRANSITIONS=162} [2022-09-20 21:00:43,295 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 7 predicate places. [2022-09-20 21:00:43,296 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 162 transitions, 354 flow [2022-09-20 21:00:43,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 127.125) internal successors, (1017), 8 states have internal predecessors, (1017), 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) [2022-09-20 21:00:43,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:43,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:00:43,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:00:43,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:00:43,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash 859272407, now seen corresponding path program 1 times [2022-09-20 21:00:43,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:43,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031257775] [2022-09-20 21:00:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:43,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:00:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:44,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031257775] [2022-09-20 21:00:44,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031257775] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:00:44,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804399921] [2022-09-20 21:00:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:44,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:00:44,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:00:44,039 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) [2022-09-20 21:00:44,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 21:00:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:44,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 46 conjunts are in the unsatisfiable core [2022-09-20 21:00:44,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:00:45,388 INFO L356 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-09-20 21:00:45,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2022-09-20 21:00:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:00:45,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:00:45,640 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:00:45,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-09-20 21:00:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:00:46,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804399921] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:00:46,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:00:46,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 20] total 48 [2022-09-20 21:00:46,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336449224] [2022-09-20 21:00:46,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:00:46,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-09-20 21:00:46,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:46,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-09-20 21:00:46,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1973, Unknown=0, NotChecked=0, Total=2256 [2022-09-20 21:00:46,530 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 186 [2022-09-20 21:00:46,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 162 transitions, 354 flow. Second operand has 48 states, 48 states have (on average 102.5625) internal successors, (4923), 48 states have internal predecessors, (4923), 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) [2022-09-20 21:00:46,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:46,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 186 [2022-09-20 21:00:46,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:00:55,768 INFO L130 PetriNetUnfolder]: 3473/7329 cut-off events. [2022-09-20 21:00:55,769 INFO L131 PetriNetUnfolder]: For 168/170 co-relation queries the response was YES. [2022-09-20 21:00:55,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13074 conditions, 7329 events. 3473/7329 cut-off events. For 168/170 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 60559 event pairs, 180 based on Foata normal form. 3/7288 useless extension candidates. Maximal degree in co-relation 12953. Up to 1803 conditions per place. [2022-09-20 21:00:55,827 INFO L137 encePairwiseOnDemand]: 138/186 looper letters, 395 selfloop transitions, 433 changer transitions 49/963 dead transitions. [2022-09-20 21:00:55,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 963 transitions, 3827 flow [2022-09-20 21:00:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-09-20 21:00:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2022-09-20 21:00:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 12759 transitions. [2022-09-20 21:00:55,857 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5716397849462366 [2022-09-20 21:00:55,857 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 12759 transitions. [2022-09-20 21:00:55,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 12759 transitions. [2022-09-20 21:00:55,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:00:55,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 12759 transitions. [2022-09-20 21:00:55,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 106.325) internal successors, (12759), 120 states have internal predecessors, (12759), 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) [2022-09-20 21:00:55,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 186.0) internal successors, (22506), 121 states have internal predecessors, (22506), 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) [2022-09-20 21:00:55,949 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 186.0) internal successors, (22506), 121 states have internal predecessors, (22506), 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) [2022-09-20 21:00:55,950 INFO L175 Difference]: Start difference. First operand has 182 places, 162 transitions, 354 flow. Second operand 120 states and 12759 transitions. [2022-09-20 21:00:55,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 963 transitions, 3827 flow [2022-09-20 21:00:55,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 963 transitions, 3805 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-09-20 21:00:55,972 INFO L231 Difference]: Finished difference. Result has 360 places, 679 transitions, 3340 flow [2022-09-20 21:00:55,973 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=3340, PETRI_PLACES=360, PETRI_TRANSITIONS=679} [2022-09-20 21:00:55,974 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 185 predicate places. [2022-09-20 21:00:55,974 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 679 transitions, 3340 flow [2022-09-20 21:00:55,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 102.5625) internal successors, (4923), 48 states have internal predecessors, (4923), 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) [2022-09-20 21:00:55,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:55,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:00:56,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-20 21:00:56,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:00:56,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:00:56,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:56,205 INFO L85 PathProgramCache]: Analyzing trace with hash -386910133, now seen corresponding path program 2 times [2022-09-20 21:00:56,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:56,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784028997] [2022-09-20 21:00:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:56,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:00:56,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:56,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784028997] [2022-09-20 21:00:56,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784028997] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:00:56,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:00:56,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 21:00:56,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470749815] [2022-09-20 21:00:56,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:00:56,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:00:56,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:56,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:00:56,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 21:00:56,364 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 186 [2022-09-20 21:00:56,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 679 transitions, 3340 flow. Second operand has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 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) [2022-09-20 21:00:56,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:56,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 186 [2022-09-20 21:00:56,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:02,088 INFO L130 PetriNetUnfolder]: 11401/22708 cut-off events. [2022-09-20 21:01:02,089 INFO L131 PetriNetUnfolder]: For 484945/487248 co-relation queries the response was YES. [2022-09-20 21:01:02,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102036 conditions, 22708 events. 11401/22708 cut-off events. For 484945/487248 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 218936 event pairs, 1600 based on Foata normal form. 252/22504 useless extension candidates. Maximal degree in co-relation 101947. Up to 5174 conditions per place. [2022-09-20 21:01:02,462 INFO L137 encePairwiseOnDemand]: 176/186 looper letters, 1647 selfloop transitions, 18 changer transitions 0/1900 dead transitions. [2022-09-20 21:01:02,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1900 transitions, 13091 flow [2022-09-20 21:01:02,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 21:01:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 21:01:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1444 transitions. [2022-09-20 21:01:02,465 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8626045400238949 [2022-09-20 21:01:02,465 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1444 transitions. [2022-09-20 21:01:02,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1444 transitions. [2022-09-20 21:01:02,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:02,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1444 transitions. [2022-09-20 21:01:02,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.44444444444446) internal successors, (1444), 9 states have internal predecessors, (1444), 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) [2022-09-20 21:01:02,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 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) [2022-09-20 21:01:02,470 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 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) [2022-09-20 21:01:02,470 INFO L175 Difference]: Start difference. First operand has 360 places, 679 transitions, 3340 flow. Second operand 9 states and 1444 transitions. [2022-09-20 21:01:02,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1900 transitions, 13091 flow [2022-09-20 21:01:03,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 1900 transitions, 13048 flow, removed 10 selfloop flow, removed 13 redundant places. [2022-09-20 21:01:03,987 INFO L231 Difference]: Finished difference. Result has 354 places, 693 transitions, 3418 flow [2022-09-20 21:01:03,988 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=3304, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3418, PETRI_PLACES=354, PETRI_TRANSITIONS=693} [2022-09-20 21:01:03,990 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 179 predicate places. [2022-09-20 21:01:03,994 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 693 transitions, 3418 flow [2022-09-20 21:01:04,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 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) [2022-09-20 21:01:04,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:04,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:04,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:01:04,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:01:04,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:04,002 INFO L85 PathProgramCache]: Analyzing trace with hash -597716779, now seen corresponding path program 3 times [2022-09-20 21:01:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:04,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635616459] [2022-09-20 21:01:04,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:04,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:04,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:04,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635616459] [2022-09-20 21:01:04,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635616459] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:04,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153282390] [2022-09-20 21:01:04,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 21:01:04,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:04,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:04,496 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) [2022-09-20 21:01:04,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:01:04,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-20 21:01:04,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:04,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-20 21:01:04,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:05,041 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:01:05,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-09-20 21:01:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:05,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 21:01:05,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153282390] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:05,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 21:01:05,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [21] total 29 [2022-09-20 21:01:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635589818] [2022-09-20 21:01:05,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:05,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-20 21:01:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-20 21:01:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2022-09-20 21:01:05,072 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 186 [2022-09-20 21:01:05,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 693 transitions, 3418 flow. Second operand has 13 states, 13 states have (on average 115.84615384615384) internal successors, (1506), 13 states have internal predecessors, (1506), 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) [2022-09-20 21:01:05,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:05,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 186 [2022-09-20 21:01:05,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:11,714 INFO L130 PetriNetUnfolder]: 15816/30651 cut-off events. [2022-09-20 21:01:11,714 INFO L131 PetriNetUnfolder]: For 1432887/1434375 co-relation queries the response was YES. [2022-09-20 21:01:12,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190717 conditions, 30651 events. 15816/30651 cut-off events. For 1432887/1434375 co-relation queries the response was YES. Maximal size of possible extension queue 1707. Compared 298890 event pairs, 1675 based on Foata normal form. 480/30790 useless extension candidates. Maximal degree in co-relation 169007. Up to 17616 conditions per place. [2022-09-20 21:01:12,554 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 824 selfloop transitions, 190 changer transitions 20/1149 dead transitions. [2022-09-20 21:01:12,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 1149 transitions, 9214 flow [2022-09-20 21:01:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 21:01:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 21:01:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2421 transitions. [2022-09-20 21:01:12,558 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6508064516129032 [2022-09-20 21:01:12,558 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2421 transitions. [2022-09-20 21:01:12,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2421 transitions. [2022-09-20 21:01:12,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:12,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2421 transitions. [2022-09-20 21:01:12,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 121.05) internal successors, (2421), 20 states have internal predecessors, (2421), 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) [2022-09-20 21:01:12,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 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) [2022-09-20 21:01:12,566 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 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) [2022-09-20 21:01:12,567 INFO L175 Difference]: Start difference. First operand has 354 places, 693 transitions, 3418 flow. Second operand 20 states and 2421 transitions. [2022-09-20 21:01:12,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 1149 transitions, 9214 flow [2022-09-20 21:01:16,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 1149 transitions, 9214 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:01:16,182 INFO L231 Difference]: Finished difference. Result has 386 places, 868 transitions, 5378 flow [2022-09-20 21:01:16,182 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5378, PETRI_PLACES=386, PETRI_TRANSITIONS=868} [2022-09-20 21:01:16,183 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 211 predicate places. [2022-09-20 21:01:16,183 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 868 transitions, 5378 flow [2022-09-20 21:01:16,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 115.84615384615384) internal successors, (1506), 13 states have internal predecessors, (1506), 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) [2022-09-20 21:01:16,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:16,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:16,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:16,398 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,SelfDestructingSolverStorable3 [2022-09-20 21:01:16,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:01:16,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:16,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1692484893, now seen corresponding path program 4 times [2022-09-20 21:01:16,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:16,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127653304] [2022-09-20 21:01:16,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:16,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:16,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:16,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127653304] [2022-09-20 21:01:16,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127653304] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:16,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:16,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 21:01:16,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352639290] [2022-09-20 21:01:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:16,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 21:01:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:16,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 21:01:16,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 21:01:16,477 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 186 [2022-09-20 21:01:16,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 868 transitions, 5378 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2022-09-20 21:01:16,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:16,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 186 [2022-09-20 21:01:16,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:20,959 INFO L130 PetriNetUnfolder]: 10551/23359 cut-off events. [2022-09-20 21:01:20,960 INFO L131 PetriNetUnfolder]: For 735375/738156 co-relation queries the response was YES. [2022-09-20 21:01:21,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130275 conditions, 23359 events. 10551/23359 cut-off events. For 735375/738156 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 246072 event pairs, 1917 based on Foata normal form. 232/22967 useless extension candidates. Maximal degree in co-relation 130172. Up to 12998 conditions per place. [2022-09-20 21:01:22,042 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 646 selfloop transitions, 2 changer transitions 1/940 dead transitions. [2022-09-20 21:01:22,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 940 transitions, 7222 flow [2022-09-20 21:01:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 21:01:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 21:01:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-09-20 21:01:22,044 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2022-09-20 21:01:22,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-09-20 21:01:22,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-09-20 21:01:22,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:22,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-09-20 21:01:22,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2022-09-20 21:01:22,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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) [2022-09-20 21:01:22,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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) [2022-09-20 21:01:22,047 INFO L175 Difference]: Start difference. First operand has 386 places, 868 transitions, 5378 flow. Second operand 3 states and 504 transitions. [2022-09-20 21:01:22,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 940 transitions, 7222 flow [2022-09-20 21:01:25,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 940 transitions, 7040 flow, removed 83 selfloop flow, removed 8 redundant places. [2022-09-20 21:01:25,106 INFO L231 Difference]: Finished difference. Result has 377 places, 866 transitions, 5193 flow [2022-09-20 21:01:25,107 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=5188, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=865, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5193, PETRI_PLACES=377, PETRI_TRANSITIONS=866} [2022-09-20 21:01:25,108 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 202 predicate places. [2022-09-20 21:01:25,108 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 866 transitions, 5193 flow [2022-09-20 21:01:25,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2022-09-20 21:01:25,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:25,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:25,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 21:01:25,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:01:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1064604681, now seen corresponding path program 5 times [2022-09-20 21:01:25,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:25,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212697568] [2022-09-20 21:01:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:25,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:26,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:26,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212697568] [2022-09-20 21:01:26,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212697568] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:26,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125655450] [2022-09-20 21:01:26,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-20 21:01:26,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:26,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:26,560 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) [2022-09-20 21:01:26,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 21:01:26,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 21:01:26,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:26,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 66 conjunts are in the unsatisfiable core [2022-09-20 21:01:26,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:26,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:01:26,749 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-20 21:01:26,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-09-20 21:01:27,240 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-20 21:01:27,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-09-20 21:01:27,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-20 21:01:28,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:01:28,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:01:28,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:01:30,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-20 21:01:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:30,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:31,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125655450] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:31,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:01:31,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [32, 32] total 74 [2022-09-20 21:01:31,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384346975] [2022-09-20 21:01:31,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:31,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-20 21:01:31,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:31,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-20 21:01:31,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=4959, Unknown=46, NotChecked=0, Total=5402 [2022-09-20 21:01:31,763 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 186 [2022-09-20 21:01:31,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 866 transitions, 5193 flow. Second operand has 20 states, 20 states have (on average 106.25) internal successors, (2125), 20 states have internal predecessors, (2125), 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) [2022-09-20 21:01:31,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:31,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 186 [2022-09-20 21:01:31,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:39,059 INFO L130 PetriNetUnfolder]: 14326/30495 cut-off events. [2022-09-20 21:01:39,060 INFO L131 PetriNetUnfolder]: For 1505391/1507864 co-relation queries the response was YES. [2022-09-20 21:01:39,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206243 conditions, 30495 events. 14326/30495 cut-off events. For 1505391/1507864 co-relation queries the response was YES. Maximal size of possible extension queue 1764. Compared 324717 event pairs, 2479 based on Foata normal form. 133/30029 useless extension candidates. Maximal degree in co-relation 186197. Up to 18984 conditions per place. [2022-09-20 21:01:39,871 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 857 selfloop transitions, 142 changer transitions 29/1155 dead transitions. [2022-09-20 21:01:39,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1155 transitions, 10338 flow [2022-09-20 21:01:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 21:01:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 21:01:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2425 transitions. [2022-09-20 21:01:39,874 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5926197458455523 [2022-09-20 21:01:39,874 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2425 transitions. [2022-09-20 21:01:39,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2425 transitions. [2022-09-20 21:01:39,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:39,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2425 transitions. [2022-09-20 21:01:39,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 110.22727272727273) internal successors, (2425), 22 states have internal predecessors, (2425), 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) [2022-09-20 21:01:39,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 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) [2022-09-20 21:01:39,884 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 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) [2022-09-20 21:01:39,884 INFO L175 Difference]: Start difference. First operand has 377 places, 866 transitions, 5193 flow. Second operand 22 states and 2425 transitions. [2022-09-20 21:01:39,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 1155 transitions, 10338 flow [2022-09-20 21:01:44,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 1155 transitions, 10334 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 21:01:44,533 INFO L231 Difference]: Finished difference. Result has 409 places, 993 transitions, 6923 flow [2022-09-20 21:01:44,534 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=5189, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=866, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6923, PETRI_PLACES=409, PETRI_TRANSITIONS=993} [2022-09-20 21:01:44,535 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 234 predicate places. [2022-09-20 21:01:44,535 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 993 transitions, 6923 flow [2022-09-20 21:01:44,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 106.25) internal successors, (2125), 20 states have internal predecessors, (2125), 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) [2022-09-20 21:01:44,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:44,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:44,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:44,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:44,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:01:44,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1625680679, now seen corresponding path program 6 times [2022-09-20 21:01:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:44,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304962615] [2022-09-20 21:01:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:45,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:45,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304962615] [2022-09-20 21:01:45,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304962615] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:45,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841583831] [2022-09-20 21:01:45,094 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-20 21:01:45,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:45,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:45,096 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) [2022-09-20 21:01:45,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 21:01:45,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-09-20 21:01:45,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:45,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 22 conjunts are in the unsatisfiable core [2022-09-20 21:01:45,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:45,500 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:01:45,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-09-20 21:01:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:45,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 21:01:45,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841583831] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:45,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 21:01:45,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 28 [2022-09-20 21:01:45,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29966761] [2022-09-20 21:01:45,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:45,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-20 21:01:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-20 21:01:45,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-09-20 21:01:45,522 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 186 [2022-09-20 21:01:45,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 993 transitions, 6923 flow. Second operand has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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) [2022-09-20 21:01:45,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:45,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 186 [2022-09-20 21:01:45,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:54,966 INFO L130 PetriNetUnfolder]: 16466/35752 cut-off events. [2022-09-20 21:01:54,967 INFO L131 PetriNetUnfolder]: For 1864043/1867069 co-relation queries the response was YES. [2022-09-20 21:01:55,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257017 conditions, 35752 events. 16466/35752 cut-off events. For 1864043/1867069 co-relation queries the response was YES. Maximal size of possible extension queue 1990. Compared 394308 event pairs, 1097 based on Foata normal form. 540/35641 useless extension candidates. Maximal degree in co-relation 256903. Up to 17608 conditions per place. [2022-09-20 21:01:55,711 INFO L137 encePairwiseOnDemand]: 160/186 looper letters, 835 selfloop transitions, 388 changer transitions 18/1375 dead transitions. [2022-09-20 21:01:55,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1375 transitions, 13296 flow [2022-09-20 21:01:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-20 21:01:55,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-20 21:01:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1894 transitions. [2022-09-20 21:01:55,714 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.678853046594982 [2022-09-20 21:01:55,714 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1894 transitions. [2022-09-20 21:01:55,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1894 transitions. [2022-09-20 21:01:55,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:55,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1894 transitions. [2022-09-20 21:01:55,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.26666666666667) internal successors, (1894), 15 states have internal predecessors, (1894), 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) [2022-09-20 21:01:55,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 186.0) internal successors, (2976), 16 states have internal predecessors, (2976), 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) [2022-09-20 21:01:55,720 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 186.0) internal successors, (2976), 16 states have internal predecessors, (2976), 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) [2022-09-20 21:01:55,720 INFO L175 Difference]: Start difference. First operand has 409 places, 993 transitions, 6923 flow. Second operand 15 states and 1894 transitions. [2022-09-20 21:01:55,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1375 transitions, 13296 flow [2022-09-20 21:02:03,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1375 transitions, 13187 flow, removed 42 selfloop flow, removed 9 redundant places. [2022-09-20 21:02:03,851 INFO L231 Difference]: Finished difference. Result has 418 places, 1212 transitions, 10343 flow [2022-09-20 21:02:03,852 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=6826, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10343, PETRI_PLACES=418, PETRI_TRANSITIONS=1212} [2022-09-20 21:02:03,852 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 243 predicate places. [2022-09-20 21:02:03,853 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 1212 transitions, 10343 flow [2022-09-20 21:02:03,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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) [2022-09-20 21:02:03,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:02:03,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:02:03,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-20 21:02:04,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:02:04,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:02:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:02:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1281790151, now seen corresponding path program 7 times [2022-09-20 21:02:04,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:02:04,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599409194] [2022-09-20 21:02:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:02:04,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:02:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:02:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:02:04,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:02:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599409194] [2022-09-20 21:02:04,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599409194] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:02:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918621934] [2022-09-20 21:02:04,480 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-20 21:02:04,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:02:04,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:02:04,482 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) [2022-09-20 21:02:04,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 21:02:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:02:04,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 48 conjunts are in the unsatisfiable core [2022-09-20 21:02:04,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:02:05,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-20 21:02:05,296 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:02:05,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-09-20 21:02:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:02:05,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:02:05,855 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:02:05,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 78 [2022-09-20 21:02:06,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:02:06,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918621934] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:02:06,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:02:06,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 19] total 46 [2022-09-20 21:02:06,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622066342] [2022-09-20 21:02:06,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:02:06,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-09-20 21:02:06,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:02:06,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-09-20 21:02:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1800, Unknown=0, NotChecked=0, Total=2070 [2022-09-20 21:02:06,562 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 186 [2022-09-20 21:02:06,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 1212 transitions, 10343 flow. Second operand has 46 states, 46 states have (on average 100.6086956521739) internal successors, (4628), 46 states have internal predecessors, (4628), 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) [2022-09-20 21:02:06,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:02:06,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 186 [2022-09-20 21:02:06,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:02:29,631 INFO L130 PetriNetUnfolder]: 28360/64058 cut-off events. [2022-09-20 21:02:29,631 INFO L131 PetriNetUnfolder]: For 3811219/3817812 co-relation queries the response was YES. [2022-09-20 21:02:31,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503034 conditions, 64058 events. 28360/64058 cut-off events. For 3811219/3817812 co-relation queries the response was YES. Maximal size of possible extension queue 4224. Compared 803136 event pairs, 2024 based on Foata normal form. 1191/64348 useless extension candidates. Maximal degree in co-relation 502915. Up to 14409 conditions per place. [2022-09-20 21:02:31,659 INFO L137 encePairwiseOnDemand]: 145/186 looper letters, 1734 selfloop transitions, 2007 changer transitions 111/3958 dead transitions. [2022-09-20 21:02:31,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 3958 transitions, 48124 flow [2022-09-20 21:02:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-09-20 21:02:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-09-20 21:02:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 8247 transitions. [2022-09-20 21:02:31,668 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5542338709677419 [2022-09-20 21:02:31,668 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 8247 transitions. [2022-09-20 21:02:31,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 8247 transitions. [2022-09-20 21:02:31,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:02:31,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 8247 transitions. [2022-09-20 21:02:31,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 103.0875) internal successors, (8247), 80 states have internal predecessors, (8247), 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) [2022-09-20 21:02:31,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 186.0) internal successors, (15066), 81 states have internal predecessors, (15066), 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) [2022-09-20 21:02:31,769 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 186.0) internal successors, (15066), 81 states have internal predecessors, (15066), 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) [2022-09-20 21:02:31,769 INFO L175 Difference]: Start difference. First operand has 418 places, 1212 transitions, 10343 flow. Second operand 80 states and 8247 transitions. [2022-09-20 21:02:31,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 3958 transitions, 48124 flow [2022-09-20 21:02:51,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 3958 transitions, 46773 flow, removed 510 selfloop flow, removed 9 redundant places. [2022-09-20 21:02:51,318 INFO L231 Difference]: Finished difference. Result has 522 places, 3073 transitions, 36260 flow [2022-09-20 21:02:51,320 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=9949, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=36260, PETRI_PLACES=522, PETRI_TRANSITIONS=3073} [2022-09-20 21:02:51,320 INFO L287 CegarLoopForPetriNet]: 175 programPoint places, 347 predicate places. [2022-09-20 21:02:51,320 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 3073 transitions, 36260 flow [2022-09-20 21:02:51,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 100.6086956521739) internal successors, (4628), 46 states have internal predecessors, (4628), 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) [2022-09-20 21:02:51,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:02:51,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:02:51,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-20 21:02:51,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:02:51,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:02:51,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:02:51,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2014160133, now seen corresponding path program 8 times [2022-09-20 21:02:51,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:02:51,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482298150] [2022-09-20 21:02:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:02:51,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:02:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:02:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:02:51,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:02:51,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482298150] [2022-09-20 21:02:51,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482298150] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:02:51,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730229412] [2022-09-20 21:02:51,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:02:51,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:02:51,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:02:51,979 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) [2022-09-20 21:02:51,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-20 21:02:52,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-20 21:02:52,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:02:52,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 22 conjunts are in the unsatisfiable core [2022-09-20 21:02:52,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:02:52,309 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:02:52,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-09-20 21:02:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:02:52,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 21:02:52,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730229412] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:02:52,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 21:02:52,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [25] total 32 [2022-09-20 21:02:52,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158941372] [2022-09-20 21:02:52,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:02:52,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-20 21:02:52,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:02:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-20 21:02:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2022-09-20 21:02:52,331 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 186 [2022-09-20 21:02:52,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 3073 transitions, 36260 flow. Second operand has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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) [2022-09-20 21:02:52,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:02:52,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 186 [2022-09-20 21:02:52,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand