/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:29:44,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:29:44,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:29:44,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:29:44,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:29:44,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:29:44,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:29:44,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:29:44,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:29:44,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:29:44,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:29:44,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:29:44,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:29:44,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:29:44,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:29:44,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:29:44,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:29:44,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:29:44,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:29:44,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:29:44,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:29:44,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:29:44,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:29:44,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:29:44,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 19:29:44,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:29:44,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:29:44,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:29:44,507 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-VariableLbe.epf [2023-01-27 19:29:44,528 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:29:44,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:29:44,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:29:44,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:29:44,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:29:44,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:29:44,531 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:29:44,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:29:44,531 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:29:44,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:29:44,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:29:44,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:29:44,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:29:44,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:29:44,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:29:44,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:29:44,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:29:44,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:29:44,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:29:44,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:29:44,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:29:44,533 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:29:44,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:29:44,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:29:44,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:29:44,745 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:29:44,746 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:29:44,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-01-27 19:29:45,729 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:29:45,958 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:29:45,958 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-01-27 19:29:45,969 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b84b959a0/7627b039678b4e1baf3c2dbfc0c896d2/FLAG4870d1c4e [2023-01-27 19:29:45,983 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b84b959a0/7627b039678b4e1baf3c2dbfc0c896d2 [2023-01-27 19:29:45,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:29:45,986 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:29:45,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:29:45,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:29:45,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:29:45,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:29:45" (1/1) ... [2023-01-27 19:29:45,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b467ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:45, skipping insertion in model container [2023-01-27 19:29:45,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:29:45" (1/1) ... [2023-01-27 19:29:45,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:29:46,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:29:46,363 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-01-27 19:29:46,377 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:46,377 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:46,377 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:46,379 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:46,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:29:46,416 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:29:46,455 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-01-27 19:29:46,464 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:46,465 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:46,466 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:46,466 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:46,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:29:46,540 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:29:46,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46 WrapperNode [2023-01-27 19:29:46,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:29:46,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:29:46,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:29:46,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:29:46,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,599 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 304 [2023-01-27 19:29:46,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:29:46,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:29:46,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:29:46,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:29:46,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:29:46,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:29:46,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:29:46,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:29:46,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (1/1) ... [2023-01-27 19:29:46,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:29:46,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:29:46,662 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) [2023-01-27 19:29:46,672 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 [2023-01-27 19:29:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:29:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-27 19:29:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-27 19:29:46,691 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-27 19:29:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:29:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:29:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-27 19:29:46,691 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-27 19:29:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:29:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 19:29:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 19:29:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:29:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-27 19:29:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:29:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:29:46,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:29:46,693 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:29:46,813 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:29:46,814 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:29:47,171 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:29:47,178 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:29:47,178 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-01-27 19:29:47,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:29:47 BoogieIcfgContainer [2023-01-27 19:29:47,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:29:47,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:29:47,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:29:47,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:29:47,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:29:45" (1/3) ... [2023-01-27 19:29:47,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ead69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:29:47, skipping insertion in model container [2023-01-27 19:29:47,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:46" (2/3) ... [2023-01-27 19:29:47,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ead69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:29:47, skipping insertion in model container [2023-01-27 19:29:47,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:29:47" (3/3) ... [2023-01-27 19:29:47,186 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-01-27 19:29:47,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:29:47,197 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 19:29:47,197 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:29:47,265 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 19:29:47,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-01-27 19:29:47,404 INFO L130 PetriNetUnfolder]: 77/493 cut-off events. [2023-01-27 19:29:47,405 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-01-27 19:29:47,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-01-27 19:29:47,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 302 transitions, 626 flow [2023-01-27 19:29:47,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 302 transitions, 626 flow [2023-01-27 19:29:47,423 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:29:47,429 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 302 transitions, 626 flow [2023-01-27 19:29:47,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 302 transitions, 626 flow [2023-01-27 19:29:47,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-01-27 19:29:47,508 INFO L130 PetriNetUnfolder]: 77/493 cut-off events. [2023-01-27 19:29:47,508 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-01-27 19:29:47,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-01-27 19:29:47,523 INFO L119 LiptonReduction]: Number of co-enabled transitions 31320 [2023-01-27 19:30:00,842 WARN L222 SmtUtils]: Spent 7.10s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:30:07,825 WARN L222 SmtUtils]: Spent 6.98s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:30:13,404 WARN L222 SmtUtils]: Spent 5.58s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:30:18,543 WARN L222 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:30:18,547 INFO L134 LiptonReduction]: Checked pairs total: 50902 [2023-01-27 19:30:18,547 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-01-27 19:30:18,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:30:18,581 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;@6fca060b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:30:18,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 19:30:18,586 INFO L130 PetriNetUnfolder]: 2/23 cut-off events. [2023-01-27 19:30:18,586 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:30:18,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:18,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-01-27 19:30:18,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 19:30:18,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1961127902, now seen corresponding path program 1 times [2023-01-27 19:30:18,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:18,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281073235] [2023-01-27 19:30:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:18,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:30:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:18,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:18,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281073235] [2023-01-27 19:30:18,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281073235] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:30:18,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:30:18,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 19:30:18,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88118511] [2023-01-27 19:30:18,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:30:18,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:30:18,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:18,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:30:18,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:30:18,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 558 [2023-01-27 19:30:18,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 93 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 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) [2023-01-27 19:30:18,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:18,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 558 [2023-01-27 19:30:18,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:19,584 INFO L130 PetriNetUnfolder]: 5341/8583 cut-off events. [2023-01-27 19:30:19,584 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-01-27 19:30:19,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16472 conditions, 8583 events. 5341/8583 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51439 event pairs, 4400 based on Foata normal form. 1159/7780 useless extension candidates. Maximal degree in co-relation 15575. Up to 7762 conditions per place. [2023-01-27 19:30:19,627 INFO L137 encePairwiseOnDemand]: 535/558 looper letters, 60 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-01-27 19:30:19,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 298 flow [2023-01-27 19:30:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:30:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:30:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-01-27 19:30:19,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.497610513739546 [2023-01-27 19:30:19,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-01-27 19:30:19,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-01-27 19:30:19,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:19,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-01-27 19:30:19,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 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) [2023-01-27 19:30:19,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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) [2023-01-27 19:30:19,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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) [2023-01-27 19:30:19,656 INFO L175 Difference]: Start difference. First operand has 66 places, 93 transitions, 208 flow. Second operand 3 states and 833 transitions. [2023-01-27 19:30:19,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 298 flow [2023-01-27 19:30:19,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:30:19,662 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 180 flow [2023-01-27 19:30:19,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-01-27 19:30:19,665 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-01-27 19:30:19,666 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 180 flow [2023-01-27 19:30:19,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 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) [2023-01-27 19:30:19,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:19,666 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:30:19,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:30:19,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 19:30:19,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:19,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1505272790, now seen corresponding path program 1 times [2023-01-27 19:30:19,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:19,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041501411] [2023-01-27 19:30:19,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:19,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:30:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:19,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:19,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041501411] [2023-01-27 19:30:19,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041501411] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:30:19,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:30:19,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:30:19,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924134513] [2023-01-27 19:30:19,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:30:19,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:30:19,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:19,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:30:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:30:19,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-27 19:30:19,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2023-01-27 19:30:19,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:19,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-27 19:30:19,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:20,332 INFO L130 PetriNetUnfolder]: 5341/8585 cut-off events. [2023-01-27 19:30:20,332 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-01-27 19:30:20,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16483 conditions, 8585 events. 5341/8585 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51437 event pairs, 4400 based on Foata normal form. 2/6628 useless extension candidates. Maximal degree in co-relation 16464. Up to 7765 conditions per place. [2023-01-27 19:30:20,382 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-01-27 19:30:20,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 304 flow [2023-01-27 19:30:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:30:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:30:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-01-27 19:30:20,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48984468339307047 [2023-01-27 19:30:20,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-01-27 19:30:20,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-01-27 19:30:20,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:20,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-01-27 19:30:20,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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) [2023-01-27 19:30:20,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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) [2023-01-27 19:30:20,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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) [2023-01-27 19:30:20,389 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 180 flow. Second operand 3 states and 820 transitions. [2023-01-27 19:30:20,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 304 flow [2023-01-27 19:30:20,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:30:20,392 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 192 flow [2023-01-27 19:30:20,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2023-01-27 19:30:20,392 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2023-01-27 19:30:20,393 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 192 flow [2023-01-27 19:30:20,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2023-01-27 19:30:20,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:20,393 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:30:20,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:30:20,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 19:30:20,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:20,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1860116030, now seen corresponding path program 1 times [2023-01-27 19:30:20,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:20,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859364608] [2023-01-27 19:30:20,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:20,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:20,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:30:20,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87540174] [2023-01-27 19:30:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:20,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:20,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:30:20,421 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) [2023-01-27 19:30:20,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:30:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:30:20,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 19:30:20,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:30:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:20,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:30:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:20,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859364608] [2023-01-27 19:30:20,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:30:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87540174] [2023-01-27 19:30:20,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87540174] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:30:20,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:30:20,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-01-27 19:30:20,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642531415] [2023-01-27 19:30:20,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:30:20,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:30:20,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:20,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:30:20,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:30:20,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-27 19:30:20,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 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) [2023-01-27 19:30:20,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:20,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-27 19:30:20,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:21,524 INFO L130 PetriNetUnfolder]: 5341/8591 cut-off events. [2023-01-27 19:30:21,524 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-01-27 19:30:21,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16511 conditions, 8591 events. 5341/8591 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51480 event pairs, 4400 based on Foata normal form. 6/6638 useless extension candidates. Maximal degree in co-relation 16471. Up to 7765 conditions per place. [2023-01-27 19:30:21,561 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-01-27 19:30:21,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 332 flow [2023-01-27 19:30:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:30:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:30:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1584 transitions. [2023-01-27 19:30:21,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2023-01-27 19:30:21,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1584 transitions. [2023-01-27 19:30:21,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1584 transitions. [2023-01-27 19:30:21,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:21,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1584 transitions. [2023-01-27 19:30:21,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 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) [2023-01-27 19:30:21,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 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) [2023-01-27 19:30:21,573 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 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) [2023-01-27 19:30:21,573 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 192 flow. Second operand 6 states and 1584 transitions. [2023-01-27 19:30:21,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 332 flow [2023-01-27 19:30:21,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 19:30:21,575 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 230 flow [2023-01-27 19:30:21,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2023-01-27 19:30:21,576 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2023-01-27 19:30:21,576 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 230 flow [2023-01-27 19:30:21,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 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) [2023-01-27 19:30:21,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:21,577 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:30:21,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 19:30:21,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:21,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 19:30:21,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash 281984726, now seen corresponding path program 2 times [2023-01-27 19:30:21,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:21,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549497511] [2023-01-27 19:30:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:21,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:21,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:30:21,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096635352] [2023-01-27 19:30:21,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:30:21,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:21,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:30:21,842 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) [2023-01-27 19:30:21,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:30:22,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:30:22,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:30:22,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 19:30:22,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:30:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:22,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:30:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:22,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:22,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549497511] [2023-01-27 19:30:22,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:30:22,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096635352] [2023-01-27 19:30:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096635352] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:30:22,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:30:22,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-01-27 19:30:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643460770] [2023-01-27 19:30:22,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:30:22,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 19:30:22,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:22,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 19:30:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-01-27 19:30:22,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-27 19:30:22,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 254.41666666666666) internal successors, (3053), 12 states have internal predecessors, (3053), 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) [2023-01-27 19:30:22,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:22,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-27 19:30:22,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:23,585 INFO L130 PetriNetUnfolder]: 5341/8603 cut-off events. [2023-01-27 19:30:23,586 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2023-01-27 19:30:23,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16582 conditions, 8603 events. 5341/8603 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51562 event pairs, 4400 based on Foata normal form. 12/6656 useless extension candidates. Maximal degree in co-relation 16467. Up to 7765 conditions per place. [2023-01-27 19:30:23,627 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-01-27 19:30:23,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 406 flow [2023-01-27 19:30:23,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 19:30:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 19:30:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3111 transitions. [2023-01-27 19:30:23,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646057347670251 [2023-01-27 19:30:23,633 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3111 transitions. [2023-01-27 19:30:23,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3111 transitions. [2023-01-27 19:30:23,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:23,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3111 transitions. [2023-01-27 19:30:23,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 259.25) internal successors, (3111), 12 states have internal predecessors, (3111), 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) [2023-01-27 19:30:23,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 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) [2023-01-27 19:30:23,649 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 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) [2023-01-27 19:30:23,649 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 230 flow. Second operand 12 states and 3111 transitions. [2023-01-27 19:30:23,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 406 flow [2023-01-27 19:30:23,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 392 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-27 19:30:23,654 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 312 flow [2023-01-27 19:30:23,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=312, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2023-01-27 19:30:23,655 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2023-01-27 19:30:23,655 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 312 flow [2023-01-27 19:30:23,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 254.41666666666666) internal successors, (3053), 12 states have internal predecessors, (3053), 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) [2023-01-27 19:30:23,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:23,657 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:30:23,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 19:30:23,864 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 [2023-01-27 19:30:23,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 19:30:23,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1737594710, now seen corresponding path program 3 times [2023-01-27 19:30:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:23,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368059382] [2023-01-27 19:30:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:23,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:23,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:30:23,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062914671] [2023-01-27 19:30:23,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 19:30:23,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:23,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:30:23,981 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) [2023-01-27 19:30:23,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:30:24,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 19:30:24,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:30:24,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 19:30:24,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:30:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-27 19:30:24,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:30:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-27 19:30:24,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:24,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368059382] [2023-01-27 19:30:24,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:30:24,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062914671] [2023-01-27 19:30:24,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062914671] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:30:24,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:30:24,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-01-27 19:30:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800076821] [2023-01-27 19:30:24,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:30:24,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:30:24,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:24,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:30:24,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:30:24,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 558 [2023-01-27 19:30:24,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 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) [2023-01-27 19:30:24,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:24,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 558 [2023-01-27 19:30:24,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:25,359 INFO L130 PetriNetUnfolder]: 5351/8689 cut-off events. [2023-01-27 19:30:25,359 INFO L131 PetriNetUnfolder]: For 363/363 co-relation queries the response was YES. [2023-01-27 19:30:25,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16830 conditions, 8689 events. 5351/8689 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 52052 event pairs, 4400 based on Foata normal form. 3/6764 useless extension candidates. Maximal degree in co-relation 16523. Up to 7759 conditions per place. [2023-01-27 19:30:25,391 INFO L137 encePairwiseOnDemand]: 554/558 looper letters, 103 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2023-01-27 19:30:25,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 123 transitions, 879 flow [2023-01-27 19:30:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:30:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:30:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1572 transitions. [2023-01-27 19:30:25,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2023-01-27 19:30:25,394 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1572 transitions. [2023-01-27 19:30:25,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1572 transitions. [2023-01-27 19:30:25,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:25,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1572 transitions. [2023-01-27 19:30:25,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2023-01-27 19:30:25,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 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) [2023-01-27 19:30:25,401 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 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) [2023-01-27 19:30:25,401 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 312 flow. Second operand 6 states and 1572 transitions. [2023-01-27 19:30:25,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 123 transitions, 879 flow [2023-01-27 19:30:25,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 685 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-01-27 19:30:25,405 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 347 flow [2023-01-27 19:30:25,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2023-01-27 19:30:25,405 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2023-01-27 19:30:25,406 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 347 flow [2023-01-27 19:30:25,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 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) [2023-01-27 19:30:25,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:25,406 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-27 19:30:25,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 19:30:25,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:25,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 19:30:25,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1081566990, now seen corresponding path program 4 times [2023-01-27 19:30:25,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:25,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950977408] [2023-01-27 19:30:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:26,038 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:30:26,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574313225] [2023-01-27 19:30:26,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 19:30:26,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:26,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:30:26,054 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) [2023-01-27 19:30:26,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 19:30:28,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 19:30:28,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:30:28,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 9505 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 19:30:28,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:30:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-27 19:30:28,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:30:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-27 19:30:28,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:28,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950977408] [2023-01-27 19:30:28,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:30:28,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574313225] [2023-01-27 19:30:28,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574313225] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:30:28,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:30:28,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-01-27 19:30:28,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021798896] [2023-01-27 19:30:28,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:30:28,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 19:30:28,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:28,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 19:30:28,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-01-27 19:30:28,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-27 19:30:28,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 347 flow. Second operand has 24 states, 24 states have (on average 254.33333333333334) internal successors, (6104), 24 states have internal predecessors, (6104), 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) [2023-01-27 19:30:28,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:28,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-27 19:30:28,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:30,750 INFO L130 PetriNetUnfolder]: 5351/8737 cut-off events. [2023-01-27 19:30:30,750 INFO L131 PetriNetUnfolder]: For 3689/3689 co-relation queries the response was YES. [2023-01-27 19:30:30,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16946 conditions, 8737 events. 5351/8737 cut-off events. For 3689/3689 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 52001 event pairs, 4400 based on Foata normal form. 48/6857 useless extension candidates. Maximal degree in co-relation 16528. Up to 7771 conditions per place. [2023-01-27 19:30:30,781 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 61 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2023-01-27 19:30:30,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 99 transitions, 589 flow [2023-01-27 19:30:30,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 19:30:30,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 19:30:30,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6165 transitions. [2023-01-27 19:30:30,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603494623655914 [2023-01-27 19:30:30,791 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6165 transitions. [2023-01-27 19:30:30,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6165 transitions. [2023-01-27 19:30:30,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:30,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6165 transitions. [2023-01-27 19:30:30,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 256.875) internal successors, (6165), 24 states have internal predecessors, (6165), 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) [2023-01-27 19:30:30,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 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) [2023-01-27 19:30:30,815 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 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) [2023-01-27 19:30:30,815 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 347 flow. Second operand 24 states and 6165 transitions. [2023-01-27 19:30:30,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 99 transitions, 589 flow [2023-01-27 19:30:30,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 99 transitions, 581 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 19:30:30,819 INFO L231 Difference]: Finished difference. Result has 132 places, 99 transitions, 581 flow [2023-01-27 19:30:30,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=581, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2023-01-27 19:30:30,819 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 66 predicate places. [2023-01-27 19:30:30,819 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 581 flow [2023-01-27 19:30:30,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 254.33333333333334) internal successors, (6104), 24 states have internal predecessors, (6104), 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) [2023-01-27 19:30:30,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:30,821 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-27 19:30:30,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 19:30:31,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:31,045 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 19:30:31,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:31,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1744029938, now seen corresponding path program 5 times [2023-01-27 19:30:31,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:31,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17114465] [2023-01-27 19:30:31,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:31,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:31,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:30:31,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471803363] [2023-01-27 19:30:31,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 19:30:31,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:31,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:30:31,742 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) [2023-01-27 19:30:31,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-01-27 19:44:27,373 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:44:27,392 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:44:28,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-27 19:44:28,574 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-01-27 19:44:28,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-01-27 19:44:28,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-01-27 19:44:28,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-01-27 19:44:28,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:28,619 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-01-27 19:44:28,620 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-27 19:44:28,620 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-27 19:44:28,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-27 19:44:28,621 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-27 19:44:28,622 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-27 19:44:28,622 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-01-27 19:44:28,625 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:44:28,625 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:44:28,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:44:28 BasicIcfg [2023-01-27 19:44:28,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:44:28,627 INFO L158 Benchmark]: Toolchain (without parser) took 882641.45ms. Allocated memory was 643.8MB in the beginning and 1.4GB in the end (delta: 715.1MB). Free memory was 601.0MB in the beginning and 892.5MB in the end (delta: -291.5MB). Peak memory consumption was 426.8MB. Max. memory is 16.0GB. [2023-01-27 19:44:28,627 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 356.5MB. Free memory is still 305.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:44:28,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.87ms. Allocated memory is still 643.8MB. Free memory was 600.6MB in the beginning and 568.8MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-01-27 19:44:28,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.33ms. Allocated memory is still 643.8MB. Free memory was 568.8MB in the beginning and 565.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:44:28,628 INFO L158 Benchmark]: Boogie Preprocessor took 36.04ms. Allocated memory is still 643.8MB. Free memory was 565.7MB in the beginning and 562.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 19:44:28,628 INFO L158 Benchmark]: RCFGBuilder took 543.20ms. Allocated memory is still 643.8MB. Free memory was 562.9MB in the beginning and 586.0MB in the end (delta: -23.1MB). Peak memory consumption was 13.2MB. Max. memory is 16.0GB. [2023-01-27 19:44:28,629 INFO L158 Benchmark]: TraceAbstraction took 881444.91ms. Allocated memory was 643.8MB in the beginning and 1.4GB in the end (delta: 715.1MB). Free memory was 586.0MB in the beginning and 892.5MB in the end (delta: -306.4MB). Peak memory consumption was 409.4MB. Max. memory is 16.0GB. [2023-01-27 19:44:28,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 356.5MB. Free memory is still 305.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 551.87ms. Allocated memory is still 643.8MB. Free memory was 600.6MB in the beginning and 568.8MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.33ms. Allocated memory is still 643.8MB. Free memory was 568.8MB in the beginning and 565.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.04ms. Allocated memory is still 643.8MB. Free memory was 565.7MB in the beginning and 562.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 543.20ms. Allocated memory is still 643.8MB. Free memory was 562.9MB in the beginning and 586.0MB in the end (delta: -23.1MB). Peak memory consumption was 13.2MB. Max. memory is 16.0GB. * TraceAbstraction took 881444.91ms. Allocated memory was 643.8MB in the beginning and 1.4GB in the end (delta: 715.1MB). Free memory was 586.0MB in the beginning and 892.5MB in the end (delta: -306.4MB). Peak memory consumption was 409.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.1s, 261 PlacesBefore, 66 PlacesAfterwards, 302 TransitionsBefore, 93 TransitionsAfterwards, 31320 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 38 ConcurrentYvCompositions, 14 ChoiceCompositions, 256 TotalNumberOfCompositions, 50902 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27873, independent: 27467, independent conditional: 0, independent unconditional: 27467, dependent: 406, dependent conditional: 0, dependent unconditional: 406, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15708, independent: 15630, independent conditional: 0, independent unconditional: 15630, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27873, independent: 11837, independent conditional: 0, independent unconditional: 11837, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 15708, unknown conditional: 0, unknown unconditional: 15708] , Statistics on independence cache: Total cache size (in pairs): 515, Positive cache size: 479, Positive conditional cache size: 0, Positive unconditional cache size: 479, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 399 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 881.3s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 31.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1027 IncrementalHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 1027 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=581occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11113 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown