/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/pthread-wmm/rfi002_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:15:20,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:15:20,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:15:20,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:15:20,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:15:20,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:15:20,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:15:20,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:15:20,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:15:20,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:15:20,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:15:20,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:15:20,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:15:20,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:15:20,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:15:20,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:15:20,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:15:20,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:15:20,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:15:20,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:15:20,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:15:20,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:15:20,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:15:20,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:15:20,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 18:15:20,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:15:20,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:15:20,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:15:20,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:15:20,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:15:20,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:15:20,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:15:20,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:15:20,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:15:20,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:15:20,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:15:20,145 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 18:15:20,166 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:15:20,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:15:20,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:15:20,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:15:20,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:15:20,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:15:20,168 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:15:20,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:15:20,168 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:15:20,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:15:20,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:15:20,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:15:20,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:15:20,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:15:20,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:15:20,169 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:15:20,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:15:20,169 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:15:20,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:15:20,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:15:20,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:15:20,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:15:20,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:15:20,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:15:20,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:15:20,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:15:20,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:15:20,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:15:20,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:15:20,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:15:20,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:15:20,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:15:20,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:15:20,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:15:20,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:15:20,379 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:15:20,380 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:15:20,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-01-27 18:15:21,442 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:15:21,619 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:15:21,619 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-01-27 18:15:21,628 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9773b6a8f/ac1f4d1d15a04470ae9f2cd70f2121d5/FLAGe8e97e7e7 [2023-01-27 18:15:21,639 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9773b6a8f/ac1f4d1d15a04470ae9f2cd70f2121d5 [2023-01-27 18:15:21,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:15:21,642 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:15:21,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:15:21,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:15:21,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:15:21,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:15:21" (1/1) ... [2023-01-27 18:15:21,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b6d530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:21, skipping insertion in model container [2023-01-27 18:15:21,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:15:21" (1/1) ... [2023-01-27 18:15:21,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:15:21,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:15:21,802 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i[987,1000] [2023-01-27 18:15:21,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:15:22,007 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:15:22,016 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i[987,1000] [2023-01-27 18:15:22,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:15:22,106 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:15:22,106 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:15:22,111 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:15:22,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22 WrapperNode [2023-01-27 18:15:22,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:15:22,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:15:22,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:15:22,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:15:22,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,176 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-01-27 18:15:22,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:15:22,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:15:22,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:15:22,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:15:22,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,225 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:15:22,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:15:22,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:15:22,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:15:22,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (1/1) ... [2023-01-27 18:15:22,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:15:22,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:15:22,252 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 18:15:22,254 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 18:15:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:15:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:15:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:15:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:15:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:15:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:15:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:15:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:15:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:15:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:15:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:15:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:15:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:15:22,279 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 18:15:22,370 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:15:22,371 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:15:22,752 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:15:22,897 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:15:22,897 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:15:22,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:15:22 BoogieIcfgContainer [2023-01-27 18:15:22,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:15:22,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:15:22,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:15:22,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:15:22,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:15:21" (1/3) ... [2023-01-27 18:15:22,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5b0749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:15:22, skipping insertion in model container [2023-01-27 18:15:22,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:22" (2/3) ... [2023-01-27 18:15:22,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5b0749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:15:22, skipping insertion in model container [2023-01-27 18:15:22,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:15:22" (3/3) ... [2023-01-27 18:15:22,904 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-01-27 18:15:22,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:15:22,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-27 18:15:22,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:15:22,958 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:15:22,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 107 transitions, 224 flow [2023-01-27 18:15:23,032 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2023-01-27 18:15:23,033 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:15:23,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-01-27 18:15:23,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 107 transitions, 224 flow [2023-01-27 18:15:23,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 105 transitions, 216 flow [2023-01-27 18:15:23,044 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:15:23,059 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 105 transitions, 216 flow [2023-01-27 18:15:23,060 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 105 transitions, 216 flow [2023-01-27 18:15:23,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 105 transitions, 216 flow [2023-01-27 18:15:23,084 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2023-01-27 18:15:23,084 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:15:23,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-01-27 18:15:23,086 INFO L119 LiptonReduction]: Number of co-enabled transitions 1314 [2023-01-27 18:15:27,275 INFO L134 LiptonReduction]: Checked pairs total: 4349 [2023-01-27 18:15:27,276 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-01-27 18:15:27,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:15:27,303 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;@30ae5b87, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:15:27,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-27 18:15:27,305 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-01-27 18:15:27,305 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:15:27,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:27,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-27 18:15:27,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:27,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:27,310 INFO L85 PathProgramCache]: Analyzing trace with hash 599221769, now seen corresponding path program 1 times [2023-01-27 18:15:27,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:27,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228798345] [2023-01-27 18:15:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:27,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:27,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:27,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228798345] [2023-01-27 18:15:27,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228798345] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:27,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:27,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:15:27,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679508520] [2023-01-27 18:15:27,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:27,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:15:27,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:27,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:15:27,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:15:27,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-01-27 18:15:27,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 18:15:27,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:27,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-01-27 18:15:27,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:27,866 INFO L130 PetriNetUnfolder]: 373/626 cut-off events. [2023-01-27 18:15:27,866 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 18:15:27,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 626 events. 373/626 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2526 event pairs, 30 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1260. Up to 554 conditions per place. [2023-01-27 18:15:27,870 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-01-27 18:15:27,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 122 flow [2023-01-27 18:15:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:15:27,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:15:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-01-27 18:15:27,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876847290640394 [2023-01-27 18:15:27,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-01-27 18:15:27,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-01-27 18:15:27,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:27,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-01-27 18:15:27,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 18:15:27,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 18:15:27,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 18:15:27,891 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 297 transitions. [2023-01-27 18:15:27,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 122 flow [2023-01-27 18:15:27,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:27,894 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 48 flow [2023-01-27 18:15:27,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-01-27 18:15:27,897 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-01-27 18:15:27,897 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 48 flow [2023-01-27 18:15:27,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 18:15:27,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:27,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 18:15:27,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:15:27,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:27,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:27,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1396006180, now seen corresponding path program 1 times [2023-01-27 18:15:27,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:27,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040859994] [2023-01-27 18:15:27,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:27,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040859994] [2023-01-27 18:15:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040859994] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:27,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:15:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767428470] [2023-01-27 18:15:27,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:15:27,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:27,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:15:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:15:27,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-01-27 18:15:27,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 18:15:27,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:27,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-01-27 18:15:27,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:28,078 INFO L130 PetriNetUnfolder]: 324/547 cut-off events. [2023-01-27 18:15:28,078 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-01-27 18:15:28,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 547 events. 324/547 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2057 event pairs, 79 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 1132. Up to 396 conditions per place. [2023-01-27 18:15:28,081 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 24 selfloop transitions, 2 changer transitions 2/28 dead transitions. [2023-01-27 18:15:28,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 120 flow [2023-01-27 18:15:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:15:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:15:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-01-27 18:15:28,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860426929392447 [2023-01-27 18:15:28,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-01-27 18:15:28,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-01-27 18:15:28,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:28,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-01-27 18:15:28,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 18:15:28,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 18:15:28,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 18:15:28,085 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 48 flow. Second operand 3 states and 296 transitions. [2023-01-27 18:15:28,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 120 flow [2023-01-27 18:15:28,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:28,086 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 44 flow [2023-01-27 18:15:28,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-01-27 18:15:28,087 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-01-27 18:15:28,087 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 44 flow [2023-01-27 18:15:28,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 18:15:28,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:28,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:28,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:15:28,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:28,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash 326571041, now seen corresponding path program 1 times [2023-01-27 18:15:28,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:28,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706018847] [2023-01-27 18:15:28,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:28,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:28,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:28,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706018847] [2023-01-27 18:15:28,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706018847] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:28,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:28,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:15:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25811650] [2023-01-27 18:15:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:15:28,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:15:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:15:28,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-01-27 18:15:28,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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 18:15:28,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:28,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-01-27 18:15:28,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:28,707 INFO L130 PetriNetUnfolder]: 220/383 cut-off events. [2023-01-27 18:15:28,707 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-27 18:15:28,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 383 events. 220/383 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1271 event pairs, 92 based on Foata normal form. 18/401 useless extension candidates. Maximal degree in co-relation 792. Up to 243 conditions per place. [2023-01-27 18:15:28,709 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-01-27 18:15:28,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 108 flow [2023-01-27 18:15:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:15:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:15:28,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-01-27 18:15:28,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318555008210181 [2023-01-27 18:15:28,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-01-27 18:15:28,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-01-27 18:15:28,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:28,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-01-27 18:15:28,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 18:15:28,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 18:15:28,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 18:15:28,713 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 44 flow. Second operand 3 states and 263 transitions. [2023-01-27 18:15:28,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 108 flow [2023-01-27 18:15:28,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:28,714 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 48 flow [2023-01-27 18:15:28,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-01-27 18:15:28,715 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-01-27 18:15:28,715 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 48 flow [2023-01-27 18:15:28,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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 18:15:28,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:28,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:15:28,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:28,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash -705669376, now seen corresponding path program 1 times [2023-01-27 18:15:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:28,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367065075] [2023-01-27 18:15:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:28,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:28,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367065075] [2023-01-27 18:15:28,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367065075] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:28,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:28,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:15:28,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40105916] [2023-01-27 18:15:28,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:28,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:15:28,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:28,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:15:28,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:15:28,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-01-27 18:15:28,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 18:15:28,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:28,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-01-27 18:15:28,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:28,986 INFO L130 PetriNetUnfolder]: 199/350 cut-off events. [2023-01-27 18:15:28,986 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-27 18:15:28,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 350 events. 199/350 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1237 event pairs, 88 based on Foata normal form. 12/362 useless extension candidates. Maximal degree in co-relation 756. Up to 201 conditions per place. [2023-01-27 18:15:28,988 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-01-27 18:15:28,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 129 flow [2023-01-27 18:15:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:15:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:15:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-01-27 18:15:28,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860426929392447 [2023-01-27 18:15:28,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-01-27 18:15:28,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-01-27 18:15:28,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:28,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-01-27 18:15:28,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 18:15:28,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 18:15:28,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 18:15:28,992 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 48 flow. Second operand 3 states and 296 transitions. [2023-01-27 18:15:28,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 129 flow [2023-01-27 18:15:28,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:28,993 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 52 flow [2023-01-27 18:15:28,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-01-27 18:15:28,993 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-01-27 18:15:28,993 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 52 flow [2023-01-27 18:15:28,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 18:15:28,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:28,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:28,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:15:28,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:28,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:28,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1604901205, now seen corresponding path program 1 times [2023-01-27 18:15:28,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:28,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181856540] [2023-01-27 18:15:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:28,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:30,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181856540] [2023-01-27 18:15:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181856540] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:30,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:30,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:15:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984453412] [2023-01-27 18:15:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:30,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:15:30,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:15:30,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:15:30,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 203 [2023-01-27 18:15:30,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 75.625) internal successors, (605), 8 states have internal predecessors, (605), 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 18:15:30,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:30,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 203 [2023-01-27 18:15:30,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:30,496 INFO L130 PetriNetUnfolder]: 290/526 cut-off events. [2023-01-27 18:15:30,496 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-01-27 18:15:30,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 526 events. 290/526 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2127 event pairs, 33 based on Foata normal form. 4/530 useless extension candidates. Maximal degree in co-relation 1202. Up to 240 conditions per place. [2023-01-27 18:15:30,498 INFO L137 encePairwiseOnDemand]: 191/203 looper letters, 53 selfloop transitions, 28 changer transitions 0/81 dead transitions. [2023-01-27 18:15:30,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 81 transitions, 363 flow [2023-01-27 18:15:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 18:15:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 18:15:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 896 transitions. [2023-01-27 18:15:30,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012539184952978 [2023-01-27 18:15:30,501 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 896 transitions. [2023-01-27 18:15:30,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 896 transitions. [2023-01-27 18:15:30,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:30,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 896 transitions. [2023-01-27 18:15:30,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 81.45454545454545) internal successors, (896), 11 states have internal predecessors, (896), 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 18:15:30,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 18:15:30,506 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 18:15:30,506 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 52 flow. Second operand 11 states and 896 transitions. [2023-01-27 18:15:30,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 81 transitions, 363 flow [2023-01-27 18:15:30,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 81 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:30,508 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 253 flow [2023-01-27 18:15:30,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=253, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2023-01-27 18:15:30,509 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2023-01-27 18:15:30,509 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 253 flow [2023-01-27 18:15:30,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.625) internal successors, (605), 8 states have internal predecessors, (605), 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 18:15:30,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:30,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:30,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:15:30,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:30,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:30,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1730083433, now seen corresponding path program 2 times [2023-01-27 18:15:30,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:30,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849952733] [2023-01-27 18:15:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:30,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:31,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:31,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849952733] [2023-01-27 18:15:31,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849952733] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:31,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:31,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:15:31,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971178794] [2023-01-27 18:15:31,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:31,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:15:31,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:31,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:15:31,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:15:31,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 203 [2023-01-27 18:15:31,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 253 flow. Second operand has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 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 18:15:31,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:31,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 203 [2023-01-27 18:15:31,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:31,659 INFO L130 PetriNetUnfolder]: 361/655 cut-off events. [2023-01-27 18:15:31,659 INFO L131 PetriNetUnfolder]: For 1039/1039 co-relation queries the response was YES. [2023-01-27 18:15:31,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2402 conditions, 655 events. 361/655 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2891 event pairs, 63 based on Foata normal form. 6/661 useless extension candidates. Maximal degree in co-relation 2383. Up to 502 conditions per place. [2023-01-27 18:15:31,663 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 66 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2023-01-27 18:15:31,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 85 transitions, 617 flow [2023-01-27 18:15:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:15:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:15:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-01-27 18:15:31,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2023-01-27 18:15:31,665 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-01-27 18:15:31,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-01-27 18:15:31,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:31,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-01-27 18:15:31,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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 18:15:31,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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 18:15:31,667 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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 18:15:31,667 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 253 flow. Second operand 5 states and 455 transitions. [2023-01-27 18:15:31,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 85 transitions, 617 flow [2023-01-27 18:15:31,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 617 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:15:31,672 INFO L231 Difference]: Finished difference. Result has 48 places, 62 transitions, 420 flow [2023-01-27 18:15:31,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=48, PETRI_TRANSITIONS=62} [2023-01-27 18:15:31,672 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 20 predicate places. [2023-01-27 18:15:31,672 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 62 transitions, 420 flow [2023-01-27 18:15:31,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 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 18:15:31,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:31,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:31,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:15:31,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:31,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1857559315, now seen corresponding path program 3 times [2023-01-27 18:15:31,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:31,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155384250] [2023-01-27 18:15:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:31,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:32,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:32,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155384250] [2023-01-27 18:15:32,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155384250] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:32,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:32,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:15:32,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502807332] [2023-01-27 18:15:32,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:32,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:15:32,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:32,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:15:32,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:15:32,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 203 [2023-01-27 18:15:32,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 62 transitions, 420 flow. Second operand has 8 states, 8 states have (on average 82.625) internal successors, (661), 8 states have internal predecessors, (661), 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 18:15:32,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:32,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 203 [2023-01-27 18:15:32,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:32,506 INFO L130 PetriNetUnfolder]: 385/695 cut-off events. [2023-01-27 18:15:32,506 INFO L131 PetriNetUnfolder]: For 1529/1529 co-relation queries the response was YES. [2023-01-27 18:15:32,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 695 events. 385/695 cut-off events. For 1529/1529 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3126 event pairs, 33 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 2868. Up to 464 conditions per place. [2023-01-27 18:15:32,510 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 71 selfloop transitions, 35 changer transitions 0/106 dead transitions. [2023-01-27 18:15:32,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 106 transitions, 881 flow [2023-01-27 18:15:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:15:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:15:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 533 transitions. [2023-01-27 18:15:32,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376026272577997 [2023-01-27 18:15:32,512 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 533 transitions. [2023-01-27 18:15:32,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 533 transitions. [2023-01-27 18:15:32,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:32,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 533 transitions. [2023-01-27 18:15:32,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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 18:15:32,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 18:15:32,514 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 18:15:32,514 INFO L175 Difference]: Start difference. First operand has 48 places, 62 transitions, 420 flow. Second operand 6 states and 533 transitions. [2023-01-27 18:15:32,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 106 transitions, 881 flow [2023-01-27 18:15:32,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 862 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 18:15:32,519 INFO L231 Difference]: Finished difference. Result has 54 places, 76 transitions, 625 flow [2023-01-27 18:15:32,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=625, PETRI_PLACES=54, PETRI_TRANSITIONS=76} [2023-01-27 18:15:32,520 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2023-01-27 18:15:32,520 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 76 transitions, 625 flow [2023-01-27 18:15:32,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 82.625) internal successors, (661), 8 states have internal predecessors, (661), 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 18:15:32,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:32,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:32,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:15:32,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:32,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:32,521 INFO L85 PathProgramCache]: Analyzing trace with hash -134657145, now seen corresponding path program 4 times [2023-01-27 18:15:32,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:32,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014199244] [2023-01-27 18:15:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:32,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:33,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:33,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014199244] [2023-01-27 18:15:33,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014199244] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:33,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:33,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:15:33,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195410127] [2023-01-27 18:15:33,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:33,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:15:33,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:15:33,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:15:33,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-01-27 18:15:33,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 76 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 80.85714285714286) internal successors, (566), 7 states have internal predecessors, (566), 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 18:15:33,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:33,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-01-27 18:15:33,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:33,601 INFO L130 PetriNetUnfolder]: 457/828 cut-off events. [2023-01-27 18:15:33,602 INFO L131 PetriNetUnfolder]: For 2582/2582 co-relation queries the response was YES. [2023-01-27 18:15:33,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 828 events. 457/828 cut-off events. For 2582/2582 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3957 event pairs, 131 based on Foata normal form. 6/834 useless extension candidates. Maximal degree in co-relation 3776. Up to 611 conditions per place. [2023-01-27 18:15:33,607 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 103 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2023-01-27 18:15:33,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 1227 flow [2023-01-27 18:15:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:15:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:15:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2023-01-27 18:15:33,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250527797325827 [2023-01-27 18:15:33,610 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2023-01-27 18:15:33,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2023-01-27 18:15:33,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:33,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2023-01-27 18:15:33,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 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 18:15:33,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 18:15:33,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 18:15:33,613 INFO L175 Difference]: Start difference. First operand has 54 places, 76 transitions, 625 flow. Second operand 7 states and 604 transitions. [2023-01-27 18:15:33,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 1227 flow [2023-01-27 18:15:33,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 130 transitions, 1210 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:33,622 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 800 flow [2023-01-27 18:15:33,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2023-01-27 18:15:33,624 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2023-01-27 18:15:33,624 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 800 flow [2023-01-27 18:15:33,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.85714285714286) internal successors, (566), 7 states have internal predecessors, (566), 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 18:15:33,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:33,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:33,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:15:33,625 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:33,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash 635368993, now seen corresponding path program 5 times [2023-01-27 18:15:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:33,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459570936] [2023-01-27 18:15:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:33,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:34,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:34,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459570936] [2023-01-27 18:15:34,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459570936] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:34,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:34,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:15:34,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057054801] [2023-01-27 18:15:34,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:34,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:15:34,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:34,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:15:34,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:15:34,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-01-27 18:15:34,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 800 flow. Second operand has 8 states, 8 states have (on average 80.625) internal successors, (645), 8 states have internal predecessors, (645), 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 18:15:34,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:34,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-01-27 18:15:34,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:34,639 INFO L130 PetriNetUnfolder]: 509/949 cut-off events. [2023-01-27 18:15:34,639 INFO L131 PetriNetUnfolder]: For 3929/3929 co-relation queries the response was YES. [2023-01-27 18:15:34,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4567 conditions, 949 events. 509/949 cut-off events. For 3929/3929 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4797 event pairs, 64 based on Foata normal form. 36/985 useless extension candidates. Maximal degree in co-relation 4536. Up to 543 conditions per place. [2023-01-27 18:15:34,645 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 83 selfloop transitions, 29 changer transitions 4/116 dead transitions. [2023-01-27 18:15:34,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 116 transitions, 1208 flow [2023-01-27 18:15:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:15:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:15:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-01-27 18:15:34,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243490499648135 [2023-01-27 18:15:34,647 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-01-27 18:15:34,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-01-27 18:15:34,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:34,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-01-27 18:15:34,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 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 18:15:34,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 18:15:34,650 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 18:15:34,650 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 800 flow. Second operand 7 states and 603 transitions. [2023-01-27 18:15:34,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 116 transitions, 1208 flow [2023-01-27 18:15:34,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 116 transitions, 1169 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:34,660 INFO L231 Difference]: Finished difference. Result has 69 places, 89 transitions, 897 flow [2023-01-27 18:15:34,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=897, PETRI_PLACES=69, PETRI_TRANSITIONS=89} [2023-01-27 18:15:34,660 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-01-27 18:15:34,660 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 89 transitions, 897 flow [2023-01-27 18:15:34,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.625) internal successors, (645), 8 states have internal predecessors, (645), 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 18:15:34,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:34,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:34,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:15:34,661 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:34,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:34,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1689299816, now seen corresponding path program 1 times [2023-01-27 18:15:34,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:34,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653996409] [2023-01-27 18:15:34,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:34,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:35,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:35,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653996409] [2023-01-27 18:15:35,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653996409] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:35,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:35,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:15:35,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083241896] [2023-01-27 18:15:35,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:35,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:15:35,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:35,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:15:35,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:15:35,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-01-27 18:15:35,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 89 transitions, 897 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 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 18:15:35,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:35,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-01-27 18:15:35,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:35,294 INFO L130 PetriNetUnfolder]: 579/1103 cut-off events. [2023-01-27 18:15:35,295 INFO L131 PetriNetUnfolder]: For 5915/5915 co-relation queries the response was YES. [2023-01-27 18:15:35,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 1103 events. 579/1103 cut-off events. For 5915/5915 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5895 event pairs, 115 based on Foata normal form. 18/1121 useless extension candidates. Maximal degree in co-relation 5538. Up to 542 conditions per place. [2023-01-27 18:15:35,301 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 64 selfloop transitions, 24 changer transitions 31/119 dead transitions. [2023-01-27 18:15:35,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 119 transitions, 1347 flow [2023-01-27 18:15:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:15:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:15:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2023-01-27 18:15:35,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45615763546798027 [2023-01-27 18:15:35,303 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2023-01-27 18:15:35,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2023-01-27 18:15:35,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:35,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2023-01-27 18:15:35,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 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 18:15:35,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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 18:15:35,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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 18:15:35,306 INFO L175 Difference]: Start difference. First operand has 69 places, 89 transitions, 897 flow. Second operand 5 states and 463 transitions. [2023-01-27 18:15:35,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 119 transitions, 1347 flow [2023-01-27 18:15:35,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 1309 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-01-27 18:15:35,318 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 743 flow [2023-01-27 18:15:35,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=743, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-01-27 18:15:35,318 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-01-27 18:15:35,319 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 743 flow [2023-01-27 18:15:35,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 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 18:15:35,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:35,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:35,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 18:15:35,319 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:35,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1757307124, now seen corresponding path program 2 times [2023-01-27 18:15:35,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:35,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623842236] [2023-01-27 18:15:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:35,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:35,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:35,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623842236] [2023-01-27 18:15:35,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623842236] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:35,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:35,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:15:35,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881252362] [2023-01-27 18:15:35,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:35,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:15:35,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:35,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:15:35,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:15:35,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 203 [2023-01-27 18:15:35,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 743 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 18:15:35,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:35,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 203 [2023-01-27 18:15:35,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:36,193 INFO L130 PetriNetUnfolder]: 394/753 cut-off events. [2023-01-27 18:15:36,194 INFO L131 PetriNetUnfolder]: For 4104/4104 co-relation queries the response was YES. [2023-01-27 18:15:36,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3822 conditions, 753 events. 394/753 cut-off events. For 4104/4104 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3666 event pairs, 79 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 3788. Up to 627 conditions per place. [2023-01-27 18:15:36,198 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 71 selfloop transitions, 20 changer transitions 4/95 dead transitions. [2023-01-27 18:15:36,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 1067 flow [2023-01-27 18:15:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:15:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:15:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2023-01-27 18:15:36,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43596059113300495 [2023-01-27 18:15:36,200 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2023-01-27 18:15:36,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2023-01-27 18:15:36,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:36,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2023-01-27 18:15:36,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 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 18:15:36,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 18:15:36,203 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 18:15:36,203 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 743 flow. Second operand 6 states and 531 transitions. [2023-01-27 18:15:36,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 1067 flow [2023-01-27 18:15:36,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 1013 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-27 18:15:36,212 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 769 flow [2023-01-27 18:15:36,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=769, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2023-01-27 18:15:36,212 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2023-01-27 18:15:36,212 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 769 flow [2023-01-27 18:15:36,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 18:15:36,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:36,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:36,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 18:15:36,213 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:36,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:36,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1589283996, now seen corresponding path program 1 times [2023-01-27 18:15:36,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:36,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270029568] [2023-01-27 18:15:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:36,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:36,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:36,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270029568] [2023-01-27 18:15:36,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270029568] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:36,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:36,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:15:36,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759442277] [2023-01-27 18:15:36,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:36,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:15:36,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:15:36,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:15:36,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-01-27 18:15:36,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 769 flow. Second operand has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 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 18:15:36,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:36,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-01-27 18:15:36,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:36,954 INFO L130 PetriNetUnfolder]: 400/779 cut-off events. [2023-01-27 18:15:36,954 INFO L131 PetriNetUnfolder]: For 5084/5084 co-relation queries the response was YES. [2023-01-27 18:15:36,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 779 events. 400/779 cut-off events. For 5084/5084 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3899 event pairs, 69 based on Foata normal form. 16/795 useless extension candidates. Maximal degree in co-relation 4058. Up to 448 conditions per place. [2023-01-27 18:15:36,959 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 89 selfloop transitions, 47 changer transitions 11/147 dead transitions. [2023-01-27 18:15:36,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 147 transitions, 1643 flow [2023-01-27 18:15:36,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 18:15:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 18:15:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 732 transitions. [2023-01-27 18:15:36,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45073891625615764 [2023-01-27 18:15:36,961 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 732 transitions. [2023-01-27 18:15:36,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 732 transitions. [2023-01-27 18:15:36,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:36,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 732 transitions. [2023-01-27 18:15:36,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.5) internal successors, (732), 8 states have internal predecessors, (732), 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 18:15:36,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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 18:15:36,965 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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 18:15:36,965 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 769 flow. Second operand 8 states and 732 transitions. [2023-01-27 18:15:36,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 147 transitions, 1643 flow [2023-01-27 18:15:36,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 147 transitions, 1597 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-27 18:15:36,973 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 1220 flow [2023-01-27 18:15:36,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1220, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2023-01-27 18:15:36,974 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2023-01-27 18:15:36,974 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 1220 flow [2023-01-27 18:15:36,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 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 18:15:36,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:36,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:36,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 18:15:36,975 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:36,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:36,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1358056236, now seen corresponding path program 2 times [2023-01-27 18:15:36,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:36,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820965139] [2023-01-27 18:15:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:37,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:37,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820965139] [2023-01-27 18:15:37,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820965139] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:37,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:37,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 18:15:37,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546530658] [2023-01-27 18:15:37,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:37,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 18:15:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:37,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 18:15:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-27 18:15:37,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 203 [2023-01-27 18:15:37,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 103 transitions, 1220 flow. Second operand has 10 states, 10 states have (on average 76.5) internal successors, (765), 10 states have internal predecessors, (765), 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 18:15:37,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:37,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 203 [2023-01-27 18:15:37,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:38,436 INFO L130 PetriNetUnfolder]: 378/746 cut-off events. [2023-01-27 18:15:38,436 INFO L131 PetriNetUnfolder]: For 5946/5946 co-relation queries the response was YES. [2023-01-27 18:15:38,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4258 conditions, 746 events. 378/746 cut-off events. For 5946/5946 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3756 event pairs, 66 based on Foata normal form. 16/762 useless extension candidates. Maximal degree in co-relation 4221. Up to 481 conditions per place. [2023-01-27 18:15:38,441 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 87 selfloop transitions, 82 changer transitions 14/183 dead transitions. [2023-01-27 18:15:38,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 183 transitions, 2269 flow [2023-01-27 18:15:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 18:15:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 18:15:38,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1224 transitions. [2023-01-27 18:15:38,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019704433497537 [2023-01-27 18:15:38,444 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1224 transitions. [2023-01-27 18:15:38,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1224 transitions. [2023-01-27 18:15:38,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:38,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1224 transitions. [2023-01-27 18:15:38,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 81.6) internal successors, (1224), 15 states have internal predecessors, (1224), 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 18:15:38,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 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 18:15:38,450 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 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 18:15:38,450 INFO L175 Difference]: Start difference. First operand has 75 places, 103 transitions, 1220 flow. Second operand 15 states and 1224 transitions. [2023-01-27 18:15:38,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 183 transitions, 2269 flow [2023-01-27 18:15:38,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 183 transitions, 2187 flow, removed 41 selfloop flow, removed 0 redundant places. [2023-01-27 18:15:38,467 INFO L231 Difference]: Finished difference. Result has 97 places, 142 transitions, 1860 flow [2023-01-27 18:15:38,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1860, PETRI_PLACES=97, PETRI_TRANSITIONS=142} [2023-01-27 18:15:38,468 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 69 predicate places. [2023-01-27 18:15:38,468 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 142 transitions, 1860 flow [2023-01-27 18:15:38,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.5) internal successors, (765), 10 states have internal predecessors, (765), 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 18:15:38,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:38,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:38,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 18:15:38,469 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:38,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash -267089210, now seen corresponding path program 3 times [2023-01-27 18:15:38,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:38,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748784224] [2023-01-27 18:15:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:38,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:39,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:39,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748784224] [2023-01-27 18:15:39,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748784224] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:39,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:39,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:15:39,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853219513] [2023-01-27 18:15:39,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:39,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:15:39,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:39,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:15:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:15:39,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 203 [2023-01-27 18:15:39,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 142 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 79.875) internal successors, (639), 8 states have internal predecessors, (639), 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 18:15:39,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:39,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 203 [2023-01-27 18:15:39,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:39,712 INFO L130 PetriNetUnfolder]: 440/880 cut-off events. [2023-01-27 18:15:39,712 INFO L131 PetriNetUnfolder]: For 7018/7018 co-relation queries the response was YES. [2023-01-27 18:15:39,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5305 conditions, 880 events. 440/880 cut-off events. For 7018/7018 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4741 event pairs, 57 based on Foata normal form. 16/896 useless extension candidates. Maximal degree in co-relation 5258. Up to 446 conditions per place. [2023-01-27 18:15:39,718 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 87 selfloop transitions, 66 changer transitions 39/192 dead transitions. [2023-01-27 18:15:39,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 192 transitions, 2696 flow [2023-01-27 18:15:39,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 18:15:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 18:15:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 764 transitions. [2023-01-27 18:15:39,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181718664477285 [2023-01-27 18:15:39,720 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 764 transitions. [2023-01-27 18:15:39,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 764 transitions. [2023-01-27 18:15:39,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:39,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 764 transitions. [2023-01-27 18:15:39,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.88888888888889) internal successors, (764), 9 states have internal predecessors, (764), 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 18:15:39,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 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 18:15:39,725 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 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 18:15:39,725 INFO L175 Difference]: Start difference. First operand has 97 places, 142 transitions, 1860 flow. Second operand 9 states and 764 transitions. [2023-01-27 18:15:39,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 192 transitions, 2696 flow [2023-01-27 18:15:39,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 192 transitions, 2566 flow, removed 51 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:39,744 INFO L231 Difference]: Finished difference. Result has 106 places, 132 transitions, 1844 flow [2023-01-27 18:15:39,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1844, PETRI_PLACES=106, PETRI_TRANSITIONS=132} [2023-01-27 18:15:39,745 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2023-01-27 18:15:39,745 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 132 transitions, 1844 flow [2023-01-27 18:15:39,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 79.875) internal successors, (639), 8 states have internal predecessors, (639), 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 18:15:39,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:39,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:39,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 18:15:39,746 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:39,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:39,746 INFO L85 PathProgramCache]: Analyzing trace with hash 637891837, now seen corresponding path program 1 times [2023-01-27 18:15:39,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:39,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540280158] [2023-01-27 18:15:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:39,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:40,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:40,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540280158] [2023-01-27 18:15:40,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540280158] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:40,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:40,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:15:40,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677817584] [2023-01-27 18:15:40,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:40,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:15:40,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:40,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:15:40,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:15:40,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-01-27 18:15:40,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 132 transitions, 1844 flow. Second operand has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 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 18:15:40,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:40,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-01-27 18:15:40,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:40,435 INFO L130 PetriNetUnfolder]: 324/642 cut-off events. [2023-01-27 18:15:40,436 INFO L131 PetriNetUnfolder]: For 5744/5744 co-relation queries the response was YES. [2023-01-27 18:15:40,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4111 conditions, 642 events. 324/642 cut-off events. For 5744/5744 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3163 event pairs, 52 based on Foata normal form. 16/658 useless extension candidates. Maximal degree in co-relation 4072. Up to 464 conditions per place. [2023-01-27 18:15:40,439 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 0 selfloop transitions, 0 changer transitions 139/139 dead transitions. [2023-01-27 18:15:40,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 2158 flow [2023-01-27 18:15:40,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:15:40,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:15:40,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-01-27 18:15:40,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433497536945813 [2023-01-27 18:15:40,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-01-27 18:15:40,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-01-27 18:15:40,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:40,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-01-27 18:15:40,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 18:15:40,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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 18:15:40,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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 18:15:40,442 INFO L175 Difference]: Start difference. First operand has 106 places, 132 transitions, 1844 flow. Second operand 5 states and 450 transitions. [2023-01-27 18:15:40,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 2158 flow [2023-01-27 18:15:40,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 139 transitions, 2072 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-01-27 18:15:40,457 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2023-01-27 18:15:40,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2023-01-27 18:15:40,459 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 71 predicate places. [2023-01-27 18:15:40,459 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2023-01-27 18:15:40,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 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 18:15:40,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-27 18:15:40,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-01-27 18:15:40,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-01-27 18:15:40,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-01-27 18:15:40,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-01-27 18:15:40,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-01-27 18:15:40,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-27 18:15:40,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 18:15:40,463 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1, 1, 1] [2023-01-27 18:15:40,468 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:15:40,468 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:15:40,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:15:40 BasicIcfg [2023-01-27 18:15:40,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:15:40,471 INFO L158 Benchmark]: Toolchain (without parser) took 18829.12ms. Allocated memory was 574.6MB in the beginning and 1.0GB in the end (delta: 427.8MB). Free memory was 522.7MB in the beginning and 477.1MB in the end (delta: 45.6MB). Peak memory consumption was 474.6MB. Max. memory is 16.0GB. [2023-01-27 18:15:40,471 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 379.6MB. Free memory is still 329.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:15:40,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 469.75ms. Allocated memory is still 574.6MB. Free memory was 522.3MB in the beginning and 494.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-27 18:15:40,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.39ms. Allocated memory is still 574.6MB. Free memory was 494.9MB in the beginning and 491.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 18:15:40,471 INFO L158 Benchmark]: Boogie Preprocessor took 52.17ms. Allocated memory is still 574.6MB. Free memory was 491.3MB in the beginning and 488.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:15:40,472 INFO L158 Benchmark]: RCFGBuilder took 668.99ms. Allocated memory is still 574.6MB. Free memory was 488.8MB in the beginning and 491.9MB in the end (delta: -3.1MB). Peak memory consumption was 31.0MB. Max. memory is 16.0GB. [2023-01-27 18:15:40,472 INFO L158 Benchmark]: TraceAbstraction took 17570.14ms. Allocated memory was 574.6MB in the beginning and 1.0GB in the end (delta: 427.8MB). Free memory was 490.8MB in the beginning and 477.1MB in the end (delta: 13.7MB). Peak memory consumption was 441.6MB. Max. memory is 16.0GB. [2023-01-27 18:15:40,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 379.6MB. Free memory is still 329.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 469.75ms. Allocated memory is still 574.6MB. Free memory was 522.3MB in the beginning and 494.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 63.39ms. Allocated memory is still 574.6MB. Free memory was 494.9MB in the beginning and 491.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 52.17ms. Allocated memory is still 574.6MB. Free memory was 491.3MB in the beginning and 488.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 668.99ms. Allocated memory is still 574.6MB. Free memory was 488.8MB in the beginning and 491.9MB in the end (delta: -3.1MB). Peak memory consumption was 31.0MB. Max. memory is 16.0GB. * TraceAbstraction took 17570.14ms. Allocated memory was 574.6MB in the beginning and 1.0GB in the end (delta: 427.8MB). Free memory was 490.8MB in the beginning and 477.1MB in the end (delta: 13.7MB). Peak memory consumption was 441.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 110 PlacesBefore, 28 PlacesAfterwards, 105 TransitionsBefore, 21 TransitionsAfterwards, 1314 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 96 TotalNumberOfCompositions, 4349 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1368, independent: 1172, independent conditional: 0, independent unconditional: 1172, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 728, independent: 685, independent conditional: 0, independent unconditional: 685, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1368, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 728, unknown conditional: 0, unknown unconditional: 728] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 129 locations, 7 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: 17.5s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 406 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 406 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 179 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1467 IncrementalHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 179 mSolverCounterUnsat, 0 mSDtfsCounter, 1467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1860occurred in iteration=13, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 2462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 18:15:40,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...