/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:14:57,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:14:57,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:14:57,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:14:57,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:14:57,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:14:57,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:14:57,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:14:57,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:14:57,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:14:57,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:14:57,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:14:57,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:14:57,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:14:57,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:14:57,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:14:57,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:14:57,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:14:57,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:14:57,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:14:57,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:14:57,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:14:57,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:14:57,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:14:57,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 06:14:57,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 06:14:57,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 06:14:57,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 06:14:57,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 06:14:57,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 06:14:57,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 06:14:57,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 06:14:57,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 06:14:57,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 06:14:57,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 06:14:57,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 06:14:57,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 06:14:57,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 06:14:57,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:14:57,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:14:57,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:14:57,198 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 [2023-01-28 06:14:57,222 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:14:57,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:14:57,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:14:57,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:14:57,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:14:57,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:14:57,224 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:14:57,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:14:57,224 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:14:57,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:14:57,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:14:57,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:14:57,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:14:57,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:14:57,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:14:57,225 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:14:57,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:14:57,225 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:14:57,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:14:57,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:14:57,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:14:57,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:14:57,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:14:57,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:14:57,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:14:57,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:14:57,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:14:57,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:14:57,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:14:57,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:14:57,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:14:57,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:14:57,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:14:57,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:14:57,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:14:57,415 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:14:57,422 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:14:57,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2023-01-28 06:14:58,411 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:14:58,618 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:14:58,622 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2023-01-28 06:14:58,641 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4df7d98b/d1bf00bb6874494ea3ce4b53e481e9dc/FLAG0b3f6bcab [2023-01-28 06:14:58,652 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4df7d98b/d1bf00bb6874494ea3ce4b53e481e9dc [2023-01-28 06:14:58,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:14:58,655 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:14:58,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:14:58,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:14:58,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:14:58,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:14:58" (1/1) ... [2023-01-28 06:14:58,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a755de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:58, skipping insertion in model container [2023-01-28 06:14:58,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:14:58" (1/1) ... [2023-01-28 06:14:58,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:14:58,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:14:58,963 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/stack-1.i[41520,41533] [2023-01-28 06:14:58,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:14:58,994 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:14:59,042 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/stack-1.i[41520,41533] [2023-01-28 06:14:59,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:14:59,088 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:14:59,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59 WrapperNode [2023-01-28 06:14:59,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:14:59,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:14:59,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:14:59,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:14:59,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,131 INFO L138 Inliner]: procedures = 277, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 153 [2023-01-28 06:14:59,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:14:59,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:14:59,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:14:59,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:14:59,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:14:59,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:14:59,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:14:59,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:14:59,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (1/1) ... [2023-01-28 06:14:59,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:14:59,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:14:59,175 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) [2023-01-28 06:14:59,183 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 [2023-01-28 06:14:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-28 06:14:59,203 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-28 06:14:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-28 06:14:59,203 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-28 06:14:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:14:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:14:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 06:14:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:14:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 06:14:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:14:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:14:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:14:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:14:59,205 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 06:14:59,291 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:14:59,292 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:14:59,538 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:14:59,544 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:14:59,545 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 06:14:59,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:14:59 BoogieIcfgContainer [2023-01-28 06:14:59,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:14:59,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:14:59,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:14:59,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:14:59,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:14:58" (1/3) ... [2023-01-28 06:14:59,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b4a54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:14:59, skipping insertion in model container [2023-01-28 06:14:59,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:59" (2/3) ... [2023-01-28 06:14:59,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b4a54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:14:59, skipping insertion in model container [2023-01-28 06:14:59,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:14:59" (3/3) ... [2023-01-28 06:14:59,551 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2023-01-28 06:14:59,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:14:59,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 06:14:59,563 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:14:59,620 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 06:14:59,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 155 transitions, 326 flow [2023-01-28 06:14:59,686 INFO L130 PetriNetUnfolder]: 10/153 cut-off events. [2023-01-28 06:14:59,686 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:14:59,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 153 events. 10/153 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 348 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-01-28 06:14:59,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 155 transitions, 326 flow [2023-01-28 06:14:59,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 144 transitions, 297 flow [2023-01-28 06:14:59,699 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:14:59,705 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 144 transitions, 297 flow [2023-01-28 06:14:59,707 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 144 transitions, 297 flow [2023-01-28 06:14:59,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 144 transitions, 297 flow [2023-01-28 06:14:59,733 INFO L130 PetriNetUnfolder]: 10/144 cut-off events. [2023-01-28 06:14:59,733 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 06:14:59,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 144 events. 10/144 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 309 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-01-28 06:14:59,736 INFO L119 LiptonReduction]: Number of co-enabled transitions 6492 [2023-01-28 06:15:02,337 INFO L134 LiptonReduction]: Checked pairs total: 8991 [2023-01-28 06:15:02,337 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-01-28 06:15:02,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:15:02,356 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;@10143cea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:15:02,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 06:15:02,359 INFO L130 PetriNetUnfolder]: 1/15 cut-off events. [2023-01-28 06:15:02,359 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 06:15:02,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:02,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 06:15:02,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:02,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1268975004, now seen corresponding path program 1 times [2023-01-28 06:15:02,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:02,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35860436] [2023-01-28 06:15:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:02,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:02,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35860436] [2023-01-28 06:15:02,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35860436] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:15:02,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:15:02,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:15:02,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998794933] [2023-01-28 06:15:02,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:15:02,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:15:02,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:15:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:15:02,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 290 [2023-01-28 06:15:02,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2023-01-28 06:15:02,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:02,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 290 [2023-01-28 06:15:02,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:02,814 INFO L130 PetriNetUnfolder]: 661/1082 cut-off events. [2023-01-28 06:15:02,814 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-01-28 06:15:02,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 1082 events. 661/1082 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4006 event pairs, 283 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 2034. Up to 687 conditions per place. [2023-01-28 06:15:02,822 INFO L137 encePairwiseOnDemand]: 285/290 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-01-28 06:15:02,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 227 flow [2023-01-28 06:15:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:15:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:15:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-01-28 06:15:02,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2023-01-28 06:15:02,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-01-28 06:15:02,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-01-28 06:15:02,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:02,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-01-28 06:15:02,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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) [2023-01-28 06:15:02,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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) [2023-01-28 06:15:02,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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) [2023-01-28 06:15:02,850 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 73 flow. Second operand 3 states and 448 transitions. [2023-01-28 06:15:02,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 227 flow [2023-01-28 06:15:02,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 219 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 06:15:02,854 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 85 flow [2023-01-28 06:15:02,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2023-01-28 06:15:02,857 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-01-28 06:15:02,858 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 85 flow [2023-01-28 06:15:02,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2023-01-28 06:15:02,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:02,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:15:02,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:02,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash -575844582, now seen corresponding path program 1 times [2023-01-28 06:15:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549099195] [2023-01-28 06:15:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:02,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:02,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549099195] [2023-01-28 06:15:02,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549099195] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:15:02,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:15:02,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:15:02,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107790339] [2023-01-28 06:15:02,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:15:02,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:15:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:02,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:15:02,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:15:02,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 290 [2023-01-28 06:15:02,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2023-01-28 06:15:02,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:02,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 290 [2023-01-28 06:15:02,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:03,046 INFO L130 PetriNetUnfolder]: 625/1064 cut-off events. [2023-01-28 06:15:03,046 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-01-28 06:15:03,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 1064 events. 625/1064 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4657 event pairs, 314 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2008. Up to 926 conditions per place. [2023-01-28 06:15:03,050 INFO L137 encePairwiseOnDemand]: 287/290 looper letters, 45 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-01-28 06:15:03,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 222 flow [2023-01-28 06:15:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:15:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:15:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-01-28 06:15:03,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310344827586206 [2023-01-28 06:15:03,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-01-28 06:15:03,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-01-28 06:15:03,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:03,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-01-28 06:15:03,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2023-01-28 06:15:03,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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) [2023-01-28 06:15:03,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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) [2023-01-28 06:15:03,055 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 85 flow. Second operand 3 states and 462 transitions. [2023-01-28 06:15:03,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 222 flow [2023-01-28 06:15:03,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:15:03,057 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 97 flow [2023-01-28 06:15:03,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-01-28 06:15:03,058 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-01-28 06:15:03,059 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 97 flow [2023-01-28 06:15:03,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2023-01-28 06:15:03,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:03,059 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:03,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:15:03,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:03,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash -884871179, now seen corresponding path program 1 times [2023-01-28 06:15:03,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:03,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479739210] [2023-01-28 06:15:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:03,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:03,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:03,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479739210] [2023-01-28 06:15:03,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479739210] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:15:03,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528186965] [2023-01-28 06:15:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:03,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:15:03,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:15:03,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:15:03,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 06:15:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:03,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 06:15:03,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:15:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:03,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:15:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:03,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528186965] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:15:03,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:15:03,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-01-28 06:15:03,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012335105] [2023-01-28 06:15:03,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:15:03,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 06:15:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 06:15:03,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 06:15:03,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 290 [2023-01-28 06:15:03,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 132.4) internal successors, (1324), 10 states have internal predecessors, (1324), 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) [2023-01-28 06:15:03,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:03,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 290 [2023-01-28 06:15:03,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:03,708 INFO L130 PetriNetUnfolder]: 1619/2654 cut-off events. [2023-01-28 06:15:03,709 INFO L131 PetriNetUnfolder]: For 839/839 co-relation queries the response was YES. [2023-01-28 06:15:03,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 2654 events. 1619/2654 cut-off events. For 839/839 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12096 event pairs, 246 based on Foata normal form. 82/2392 useless extension candidates. Maximal degree in co-relation 5686. Up to 795 conditions per place. [2023-01-28 06:15:03,718 INFO L137 encePairwiseOnDemand]: 282/290 looper letters, 155 selfloop transitions, 26 changer transitions 3/184 dead transitions. [2023-01-28 06:15:03,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 184 transitions, 855 flow [2023-01-28 06:15:03,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 06:15:03,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 06:15:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1735 transitions. [2023-01-28 06:15:03,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985632183908046 [2023-01-28 06:15:03,721 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1735 transitions. [2023-01-28 06:15:03,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1735 transitions. [2023-01-28 06:15:03,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:03,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1735 transitions. [2023-01-28 06:15:03,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.58333333333334) internal successors, (1735), 12 states have internal predecessors, (1735), 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) [2023-01-28 06:15:03,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 290.0) internal successors, (3770), 13 states have internal predecessors, (3770), 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) [2023-01-28 06:15:03,730 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 290.0) internal successors, (3770), 13 states have internal predecessors, (3770), 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) [2023-01-28 06:15:03,730 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 97 flow. Second operand 12 states and 1735 transitions. [2023-01-28 06:15:03,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 184 transitions, 855 flow [2023-01-28 06:15:03,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 184 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:15:03,737 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 309 flow [2023-01-28 06:15:03,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=309, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2023-01-28 06:15:03,738 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-01-28 06:15:03,738 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 309 flow [2023-01-28 06:15:03,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 132.4) internal successors, (1324), 10 states have internal predecessors, (1324), 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) [2023-01-28 06:15:03,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:03,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:03,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 06:15:03,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:15:03,944 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:03,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2024911666, now seen corresponding path program 1 times [2023-01-28 06:15:03,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:03,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888777839] [2023-01-28 06:15:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:03,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:04,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:04,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888777839] [2023-01-28 06:15:04,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888777839] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:15:04,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:15:04,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:15:04,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491183052] [2023-01-28 06:15:04,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:15:04,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:15:04,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:04,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:15:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:15:04,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 290 [2023-01-28 06:15:04,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-01-28 06:15:04,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:04,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 290 [2023-01-28 06:15:04,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:04,146 INFO L130 PetriNetUnfolder]: 509/974 cut-off events. [2023-01-28 06:15:04,148 INFO L131 PetriNetUnfolder]: For 586/586 co-relation queries the response was YES. [2023-01-28 06:15:04,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 974 events. 509/974 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4145 event pairs, 98 based on Foata normal form. 0/886 useless extension candidates. Maximal degree in co-relation 2336. Up to 681 conditions per place. [2023-01-28 06:15:04,154 INFO L137 encePairwiseOnDemand]: 285/290 looper letters, 45 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-01-28 06:15:04,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 348 flow [2023-01-28 06:15:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:15:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:15:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-01-28 06:15:04,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2023-01-28 06:15:04,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-01-28 06:15:04,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-01-28 06:15:04,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:04,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-01-28 06:15:04,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2023-01-28 06:15:04,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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) [2023-01-28 06:15:04,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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) [2023-01-28 06:15:04,159 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 309 flow. Second operand 3 states and 440 transitions. [2023-01-28 06:15:04,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 348 flow [2023-01-28 06:15:04,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 327 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-28 06:15:04,165 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 216 flow [2023-01-28 06:15:04,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-01-28 06:15:04,167 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-01-28 06:15:04,167 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 216 flow [2023-01-28 06:15:04,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-01-28 06:15:04,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:04,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:04,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 06:15:04,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:04,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2104323153, now seen corresponding path program 1 times [2023-01-28 06:15:04,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:04,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885943164] [2023-01-28 06:15:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:04,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:04,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:04,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885943164] [2023-01-28 06:15:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885943164] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:15:04,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:15:04,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:15:04,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973649323] [2023-01-28 06:15:04,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:15:04,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:15:04,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:04,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:15:04,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:15:04,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 290 [2023-01-28 06:15:04,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-01-28 06:15:04,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:04,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 290 [2023-01-28 06:15:04,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:04,309 INFO L130 PetriNetUnfolder]: 624/1145 cut-off events. [2023-01-28 06:15:04,309 INFO L131 PetriNetUnfolder]: For 351/351 co-relation queries the response was YES. [2023-01-28 06:15:04,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 1145 events. 624/1145 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4697 event pairs, 391 based on Foata normal form. 24/1169 useless extension candidates. Maximal degree in co-relation 2382. Up to 849 conditions per place. [2023-01-28 06:15:04,313 INFO L137 encePairwiseOnDemand]: 284/290 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-01-28 06:15:04,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 383 flow [2023-01-28 06:15:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:15:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:15:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-01-28 06:15:04,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103448275862069 [2023-01-28 06:15:04,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-01-28 06:15:04,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-01-28 06:15:04,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:04,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-01-28 06:15:04,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2023-01-28 06:15:04,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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) [2023-01-28 06:15:04,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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) [2023-01-28 06:15:04,318 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 216 flow. Second operand 3 states and 444 transitions. [2023-01-28 06:15:04,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 383 flow [2023-01-28 06:15:04,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:15:04,321 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 248 flow [2023-01-28 06:15:04,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-01-28 06:15:04,323 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-01-28 06:15:04,323 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 248 flow [2023-01-28 06:15:04,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-01-28 06:15:04,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:04,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:04,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 06:15:04,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:04,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1299614568, now seen corresponding path program 1 times [2023-01-28 06:15:04,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:04,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273743727] [2023-01-28 06:15:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:04,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:04,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:04,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273743727] [2023-01-28 06:15:04,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273743727] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:15:04,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:15:04,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 06:15:04,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321869000] [2023-01-28 06:15:04,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:15:04,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 06:15:04,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 06:15:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 06:15:04,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 290 [2023-01-28 06:15:04,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 248 flow. Second operand has 15 states, 15 states have (on average 91.4) internal successors, (1371), 15 states have internal predecessors, (1371), 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) [2023-01-28 06:15:04,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:04,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 290 [2023-01-28 06:15:04,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:06,102 INFO L130 PetriNetUnfolder]: 930/1729 cut-off events. [2023-01-28 06:15:06,102 INFO L131 PetriNetUnfolder]: For 1197/1197 co-relation queries the response was YES. [2023-01-28 06:15:06,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4454 conditions, 1729 events. 930/1729 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7889 event pairs, 174 based on Foata normal form. 32/1747 useless extension candidates. Maximal degree in co-relation 2915. Up to 973 conditions per place. [2023-01-28 06:15:06,108 INFO L137 encePairwiseOnDemand]: 272/290 looper letters, 111 selfloop transitions, 38 changer transitions 30/179 dead transitions. [2023-01-28 06:15:06,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 179 transitions, 984 flow [2023-01-28 06:15:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 06:15:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 06:15:06,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2326 transitions. [2023-01-28 06:15:06,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3341954022988506 [2023-01-28 06:15:06,113 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2326 transitions. [2023-01-28 06:15:06,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2326 transitions. [2023-01-28 06:15:06,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:06,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2326 transitions. [2023-01-28 06:15:06,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 96.91666666666667) internal successors, (2326), 24 states have internal predecessors, (2326), 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) [2023-01-28 06:15:06,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 290.0) internal successors, (7250), 25 states have internal predecessors, (7250), 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) [2023-01-28 06:15:06,125 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 290.0) internal successors, (7250), 25 states have internal predecessors, (7250), 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) [2023-01-28 06:15:06,125 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 248 flow. Second operand 24 states and 2326 transitions. [2023-01-28 06:15:06,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 179 transitions, 984 flow [2023-01-28 06:15:06,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 179 transitions, 954 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 06:15:06,131 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 542 flow [2023-01-28 06:15:06,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=542, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2023-01-28 06:15:06,132 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 54 predicate places. [2023-01-28 06:15:06,132 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 542 flow [2023-01-28 06:15:06,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.4) internal successors, (1371), 15 states have internal predecessors, (1371), 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) [2023-01-28 06:15:06,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:06,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:06,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 06:15:06,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:06,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:06,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1750382990, now seen corresponding path program 2 times [2023-01-28 06:15:06,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:06,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430317877] [2023-01-28 06:15:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:06,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:06,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:06,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430317877] [2023-01-28 06:15:06,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430317877] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:15:06,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:15:06,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-01-28 06:15:06,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207760436] [2023-01-28 06:15:06,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:15:06,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 06:15:06,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 06:15:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-01-28 06:15:06,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-28 06:15:06,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 542 flow. Second operand has 16 states, 16 states have (on average 87.3125) internal successors, (1397), 16 states have internal predecessors, (1397), 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) [2023-01-28 06:15:06,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:06,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-28 06:15:06,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:07,669 INFO L130 PetriNetUnfolder]: 1208/2259 cut-off events. [2023-01-28 06:15:07,669 INFO L131 PetriNetUnfolder]: For 2489/2489 co-relation queries the response was YES. [2023-01-28 06:15:07,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6977 conditions, 2259 events. 1208/2259 cut-off events. For 2489/2489 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10806 event pairs, 374 based on Foata normal form. 16/2261 useless extension candidates. Maximal degree in co-relation 5574. Up to 1405 conditions per place. [2023-01-28 06:15:07,679 INFO L137 encePairwiseOnDemand]: 272/290 looper letters, 117 selfloop transitions, 32 changer transitions 23/172 dead transitions. [2023-01-28 06:15:07,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 172 transitions, 1221 flow [2023-01-28 06:15:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 06:15:07,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 06:15:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1329 transitions. [2023-01-28 06:15:07,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32733990147783254 [2023-01-28 06:15:07,683 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1329 transitions. [2023-01-28 06:15:07,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1329 transitions. [2023-01-28 06:15:07,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:07,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1329 transitions. [2023-01-28 06:15:07,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.92857142857143) internal successors, (1329), 14 states have internal predecessors, (1329), 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) [2023-01-28 06:15:07,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 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) [2023-01-28 06:15:07,689 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 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) [2023-01-28 06:15:07,689 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 542 flow. Second operand 14 states and 1329 transitions. [2023-01-28 06:15:07,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 172 transitions, 1221 flow [2023-01-28 06:15:07,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 172 transitions, 1209 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-01-28 06:15:07,700 INFO L231 Difference]: Finished difference. Result has 108 places, 99 transitions, 756 flow [2023-01-28 06:15:07,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=756, PETRI_PLACES=108, PETRI_TRANSITIONS=99} [2023-01-28 06:15:07,700 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 74 predicate places. [2023-01-28 06:15:07,700 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 99 transitions, 756 flow [2023-01-28 06:15:07,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.3125) internal successors, (1397), 16 states have internal predecessors, (1397), 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) [2023-01-28 06:15:07,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:07,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:07,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 06:15:07,701 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:07,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:07,701 INFO L85 PathProgramCache]: Analyzing trace with hash 954194670, now seen corresponding path program 3 times [2023-01-28 06:15:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:07,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277292024] [2023-01-28 06:15:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:07,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:08,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:08,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277292024] [2023-01-28 06:15:08,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277292024] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:15:08,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:15:08,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-01-28 06:15:08,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427190100] [2023-01-28 06:15:08,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:15:08,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 06:15:08,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 06:15:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-01-28 06:15:08,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-28 06:15:08,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 99 transitions, 756 flow. Second operand has 16 states, 16 states have (on average 87.3125) internal successors, (1397), 16 states have internal predecessors, (1397), 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) [2023-01-28 06:15:08,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:08,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-28 06:15:08,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:09,229 INFO L130 PetriNetUnfolder]: 1356/2543 cut-off events. [2023-01-28 06:15:09,229 INFO L131 PetriNetUnfolder]: For 3554/3554 co-relation queries the response was YES. [2023-01-28 06:15:09,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8329 conditions, 2543 events. 1356/2543 cut-off events. For 3554/3554 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12525 event pairs, 371 based on Foata normal form. 16/2545 useless extension candidates. Maximal degree in co-relation 6506. Up to 1368 conditions per place. [2023-01-28 06:15:09,242 INFO L137 encePairwiseOnDemand]: 273/290 looper letters, 117 selfloop transitions, 40 changer transitions 24/181 dead transitions. [2023-01-28 06:15:09,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 181 transitions, 1431 flow [2023-01-28 06:15:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 06:15:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 06:15:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1329 transitions. [2023-01-28 06:15:09,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32733990147783254 [2023-01-28 06:15:09,246 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1329 transitions. [2023-01-28 06:15:09,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1329 transitions. [2023-01-28 06:15:09,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:09,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1329 transitions. [2023-01-28 06:15:09,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.92857142857143) internal successors, (1329), 14 states have internal predecessors, (1329), 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) [2023-01-28 06:15:09,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 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) [2023-01-28 06:15:09,253 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 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) [2023-01-28 06:15:09,253 INFO L175 Difference]: Start difference. First operand has 108 places, 99 transitions, 756 flow. Second operand 14 states and 1329 transitions. [2023-01-28 06:15:09,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 181 transitions, 1431 flow [2023-01-28 06:15:09,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 181 transitions, 1403 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-28 06:15:09,271 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 951 flow [2023-01-28 06:15:09,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=951, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2023-01-28 06:15:09,273 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 88 predicate places. [2023-01-28 06:15:09,273 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 951 flow [2023-01-28 06:15:09,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.3125) internal successors, (1397), 16 states have internal predecessors, (1397), 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) [2023-01-28 06:15:09,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:09,274 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 06:15:09,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 06:15:09,274 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:09,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:09,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1380599275, now seen corresponding path program 2 times [2023-01-28 06:15:09,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:09,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404729431] [2023-01-28 06:15:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:09,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:09,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:09,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404729431] [2023-01-28 06:15:09,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404729431] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:15:09,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490917552] [2023-01-28 06:15:09,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 06:15:09,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:15:09,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:15:09,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:15:09,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 06:15:09,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:15:09,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:15:09,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 06:15:09,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:15:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:09,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:15:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:09,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490917552] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:15:09,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:15:09,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 14 [2023-01-28 06:15:09,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363796179] [2023-01-28 06:15:09,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:15:09,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 06:15:09,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 06:15:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-01-28 06:15:09,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 290 [2023-01-28 06:15:09,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 951 flow. Second operand has 15 states, 15 states have (on average 127.4) internal successors, (1911), 15 states have internal predecessors, (1911), 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) [2023-01-28 06:15:09,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:09,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 290 [2023-01-28 06:15:09,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:10,095 INFO L130 PetriNetUnfolder]: 1580/2955 cut-off events. [2023-01-28 06:15:10,095 INFO L131 PetriNetUnfolder]: For 5876/5876 co-relation queries the response was YES. [2023-01-28 06:15:10,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10280 conditions, 2955 events. 1580/2955 cut-off events. For 5876/5876 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14576 event pairs, 426 based on Foata normal form. 16/2957 useless extension candidates. Maximal degree in co-relation 7325. Up to 1002 conditions per place. [2023-01-28 06:15:10,116 INFO L137 encePairwiseOnDemand]: 282/290 looper letters, 198 selfloop transitions, 48 changer transitions 6/252 dead transitions. [2023-01-28 06:15:10,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 252 transitions, 2170 flow [2023-01-28 06:15:10,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 06:15:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 06:15:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2294 transitions. [2023-01-28 06:15:10,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46531440162271803 [2023-01-28 06:15:10,120 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2294 transitions. [2023-01-28 06:15:10,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2294 transitions. [2023-01-28 06:15:10,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:10,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2294 transitions. [2023-01-28 06:15:10,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 134.94117647058823) internal successors, (2294), 17 states have internal predecessors, (2294), 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) [2023-01-28 06:15:10,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 290.0) internal successors, (5220), 18 states have internal predecessors, (5220), 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) [2023-01-28 06:15:10,129 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 290.0) internal successors, (5220), 18 states have internal predecessors, (5220), 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) [2023-01-28 06:15:10,130 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 951 flow. Second operand 17 states and 2294 transitions. [2023-01-28 06:15:10,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 252 transitions, 2170 flow [2023-01-28 06:15:10,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 252 transitions, 2107 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-01-28 06:15:10,152 INFO L231 Difference]: Finished difference. Result has 141 places, 127 transitions, 1259 flow [2023-01-28 06:15:10,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1259, PETRI_PLACES=141, PETRI_TRANSITIONS=127} [2023-01-28 06:15:10,152 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 107 predicate places. [2023-01-28 06:15:10,153 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 127 transitions, 1259 flow [2023-01-28 06:15:10,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 127.4) internal successors, (1911), 15 states have internal predecessors, (1911), 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) [2023-01-28 06:15:10,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:10,153 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:10,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 06:15:10,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-01-28 06:15:10,358 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:10,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:10,358 INFO L85 PathProgramCache]: Analyzing trace with hash 934646639, now seen corresponding path program 4 times [2023-01-28 06:15:10,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:10,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387794885] [2023-01-28 06:15:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:10,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:10,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387794885] [2023-01-28 06:15:10,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387794885] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:15:10,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105765722] [2023-01-28 06:15:10,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 06:15:10,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:15:10,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:15:10,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:15:10,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 06:15:11,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 06:15:11,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:15:11,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 06:15:11,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:15:11,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-28 06:15:11,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 45 [2023-01-28 06:15:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:16,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:15:16,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-01-28 06:15:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 06:15:17,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105765722] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 06:15:17,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 06:15:17,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 15] total 43 [2023-01-28 06:15:17,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290894671] [2023-01-28 06:15:17,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:15:17,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 06:15:17,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:17,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 06:15:17,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1750, Unknown=1, NotChecked=0, Total=1892 [2023-01-28 06:15:17,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 290 [2023-01-28 06:15:17,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 127 transitions, 1259 flow. Second operand has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2023-01-28 06:15:17,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:17,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 290 [2023-01-28 06:15:17,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:19,497 INFO L130 PetriNetUnfolder]: 2832/5250 cut-off events. [2023-01-28 06:15:19,497 INFO L131 PetriNetUnfolder]: For 14501/14501 co-relation queries the response was YES. [2023-01-28 06:15:19,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19586 conditions, 5250 events. 2832/5250 cut-off events. For 14501/14501 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 29424 event pairs, 686 based on Foata normal form. 0/5221 useless extension candidates. Maximal degree in co-relation 14314. Up to 1634 conditions per place. [2023-01-28 06:15:19,529 INFO L137 encePairwiseOnDemand]: 274/290 looper letters, 194 selfloop transitions, 140 changer transitions 4/338 dead transitions. [2023-01-28 06:15:19,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 338 transitions, 3324 flow [2023-01-28 06:15:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-28 06:15:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-28 06:15:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2708 transitions. [2023-01-28 06:15:19,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3334975369458128 [2023-01-28 06:15:19,534 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2708 transitions. [2023-01-28 06:15:19,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2708 transitions. [2023-01-28 06:15:19,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:19,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2708 transitions. [2023-01-28 06:15:19,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 96.71428571428571) internal successors, (2708), 28 states have internal predecessors, (2708), 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) [2023-01-28 06:15:19,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 290.0) internal successors, (8410), 29 states have internal predecessors, (8410), 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) [2023-01-28 06:15:19,545 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 290.0) internal successors, (8410), 29 states have internal predecessors, (8410), 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) [2023-01-28 06:15:19,546 INFO L175 Difference]: Start difference. First operand has 141 places, 127 transitions, 1259 flow. Second operand 28 states and 2708 transitions. [2023-01-28 06:15:19,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 338 transitions, 3324 flow [2023-01-28 06:15:19,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 338 transitions, 3094 flow, removed 73 selfloop flow, removed 8 redundant places. [2023-01-28 06:15:19,586 INFO L231 Difference]: Finished difference. Result has 167 places, 204 transitions, 2262 flow [2023-01-28 06:15:19,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2262, PETRI_PLACES=167, PETRI_TRANSITIONS=204} [2023-01-28 06:15:19,587 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 133 predicate places. [2023-01-28 06:15:19,587 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 204 transitions, 2262 flow [2023-01-28 06:15:19,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2023-01-28 06:15:19,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:19,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:19,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 06:15:19,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:15:19,798 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:19,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:19,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1979329675, now seen corresponding path program 5 times [2023-01-28 06:15:19,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:19,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047163631] [2023-01-28 06:15:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:19,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:20,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047163631] [2023-01-28 06:15:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047163631] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:15:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628354349] [2023-01-28 06:15:20,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 06:15:20,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:15:20,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:15:20,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:15:20,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 06:15:20,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:15:20,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:15:20,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 71 conjunts are in the unsatisfiable core [2023-01-28 06:15:20,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:15:20,640 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-28 06:15:20,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-01-28 06:15:20,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-28 06:15:21,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2023-01-28 06:15:21,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 45 [2023-01-28 06:15:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:22,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:15:22,758 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_315) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (- 4) (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-01-28 06:15:22,765 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_315) |c_~#arr~0.base|) (+ (* 4 |c_t1Thread1of1ForFork0_inc_top_#t~post31#1|) |c_~#arr~0.offset|)) 4294967296)))) is different from false [2023-01-28 06:15:22,770 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_315) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296)))) is different from false [2023-01-28 06:15:22,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:15:22,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-01-28 06:15:22,782 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:15:22,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-01-28 06:15:22,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-01-28 06:15:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-01-28 06:15:22,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628354349] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:15:22,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:15:22,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 46 [2023-01-28 06:15:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794340751] [2023-01-28 06:15:22,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:15:22,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-01-28 06:15:22,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-01-28 06:15:22,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1817, Unknown=3, NotChecked=264, Total=2256 [2023-01-28 06:15:22,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-28 06:15:22,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 204 transitions, 2262 flow. Second operand has 48 states, 48 states have (on average 87.75) internal successors, (4212), 48 states have internal predecessors, (4212), 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) [2023-01-28 06:15:22,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:22,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-28 06:15:22,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:27,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:15:30,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:15:33,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-28 06:15:35,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-28 06:15:44,876 INFO L130 PetriNetUnfolder]: 7761/14799 cut-off events. [2023-01-28 06:15:44,876 INFO L131 PetriNetUnfolder]: For 52255/52255 co-relation queries the response was YES. [2023-01-28 06:15:44,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58359 conditions, 14799 events. 7761/14799 cut-off events. For 52255/52255 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 106264 event pairs, 1339 based on Foata normal form. 52/14770 useless extension candidates. Maximal degree in co-relation 41005. Up to 3311 conditions per place. [2023-01-28 06:15:45,003 INFO L137 encePairwiseOnDemand]: 266/290 looper letters, 520 selfloop transitions, 606 changer transitions 20/1146 dead transitions. [2023-01-28 06:15:45,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 1146 transitions, 12097 flow [2023-01-28 06:15:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-01-28 06:15:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-01-28 06:15:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 8323 transitions. [2023-01-28 06:15:45,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3188888888888889 [2023-01-28 06:15:45,015 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 8323 transitions. [2023-01-28 06:15:45,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 8323 transitions. [2023-01-28 06:15:45,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:45,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 8323 transitions. [2023-01-28 06:15:45,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 92.47777777777777) internal successors, (8323), 90 states have internal predecessors, (8323), 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) [2023-01-28 06:15:45,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 290.0) internal successors, (26390), 91 states have internal predecessors, (26390), 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) [2023-01-28 06:15:45,048 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 290.0) internal successors, (26390), 91 states have internal predecessors, (26390), 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) [2023-01-28 06:15:45,048 INFO L175 Difference]: Start difference. First operand has 167 places, 204 transitions, 2262 flow. Second operand 90 states and 8323 transitions. [2023-01-28 06:15:45,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 1146 transitions, 12097 flow [2023-01-28 06:15:45,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1146 transitions, 11334 flow, removed 299 selfloop flow, removed 6 redundant places. [2023-01-28 06:15:45,257 INFO L231 Difference]: Finished difference. Result has 300 places, 769 transitions, 9935 flow [2023-01-28 06:15:45,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=9935, PETRI_PLACES=300, PETRI_TRANSITIONS=769} [2023-01-28 06:15:45,257 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 266 predicate places. [2023-01-28 06:15:45,257 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 769 transitions, 9935 flow [2023-01-28 06:15:45,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 87.75) internal successors, (4212), 48 states have internal predecessors, (4212), 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) [2023-01-28 06:15:45,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:45,258 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:45,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 06:15:45,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:15:45,463 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:15:45,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash -388940039, now seen corresponding path program 6 times [2023-01-28 06:15:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:45,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167790482] [2023-01-28 06:15:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:15:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:15:46,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:15:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167790482] [2023-01-28 06:15:46,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167790482] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:15:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593883580] [2023-01-28 06:15:46,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 06:15:46,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:15:46,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:15:46,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:15:46,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 06:15:46,163 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 06:15:46,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:15:46,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 58 conjunts are in the unsatisfiable core [2023-01-28 06:15:46,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:15:46,180 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-28 06:15:46,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-01-28 06:15:46,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-01-28 06:15:46,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 54 [2023-01-28 06:15:46,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 45 [2023-01-28 06:15:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 06:15:50,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:15:50,744 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_369 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_369) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296)))) is different from false [2023-01-28 06:15:50,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:15:50,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-01-28 06:15:50,758 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:15:50,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-01-28 06:15:50,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-01-28 06:15:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 06:15:51,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593883580] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:15:51,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:15:51,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 44 [2023-01-28 06:15:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315111682] [2023-01-28 06:15:51,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:15:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-01-28 06:15:51,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:15:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-01-28 06:15:51,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1836, Unknown=2, NotChecked=86, Total=2070 [2023-01-28 06:15:51,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-28 06:15:51,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 769 transitions, 9935 flow. Second operand has 46 states, 46 states have (on average 87.82608695652173) internal successors, (4040), 46 states have internal predecessors, (4040), 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) [2023-01-28 06:15:51,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:15:51,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-28 06:15:51,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:16:10,639 INFO L130 PetriNetUnfolder]: 9814/18948 cut-off events. [2023-01-28 06:16:10,639 INFO L131 PetriNetUnfolder]: For 1841162/1841162 co-relation queries the response was YES. [2023-01-28 06:16:10,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241144 conditions, 18948 events. 9814/18948 cut-off events. For 1841162/1841162 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 142620 event pairs, 1440 based on Foata normal form. 85/18926 useless extension candidates. Maximal degree in co-relation 231665. Up to 8268 conditions per place. [2023-01-28 06:16:10,969 INFO L137 encePairwiseOnDemand]: 273/290 looper letters, 523 selfloop transitions, 880 changer transitions 15/1418 dead transitions. [2023-01-28 06:16:10,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 1418 transitions, 25246 flow [2023-01-28 06:16:10,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-01-28 06:16:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-01-28 06:16:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5544 transitions. [2023-01-28 06:16:10,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31862068965517243 [2023-01-28 06:16:10,977 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5544 transitions. [2023-01-28 06:16:10,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5544 transitions. [2023-01-28 06:16:10,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:16:10,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5544 transitions. [2023-01-28 06:16:10,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 92.4) internal successors, (5544), 60 states have internal predecessors, (5544), 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) [2023-01-28 06:16:11,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 290.0) internal successors, (17690), 61 states have internal predecessors, (17690), 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) [2023-01-28 06:16:11,006 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 290.0) internal successors, (17690), 61 states have internal predecessors, (17690), 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) [2023-01-28 06:16:11,006 INFO L175 Difference]: Start difference. First operand has 300 places, 769 transitions, 9935 flow. Second operand 60 states and 5544 transitions. [2023-01-28 06:16:11,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 1418 transitions, 25246 flow [2023-01-28 06:16:12,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1418 transitions, 24582 flow, removed 294 selfloop flow, removed 12 redundant places. [2023-01-28 06:16:12,715 INFO L231 Difference]: Finished difference. Result has 356 places, 1052 transitions, 15295 flow [2023-01-28 06:16:12,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=9355, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=607, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=15295, PETRI_PLACES=356, PETRI_TRANSITIONS=1052} [2023-01-28 06:16:12,716 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 322 predicate places. [2023-01-28 06:16:12,716 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1052 transitions, 15295 flow [2023-01-28 06:16:12,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 87.82608695652173) internal successors, (4040), 46 states have internal predecessors, (4040), 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) [2023-01-28 06:16:12,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:16:12,717 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:16:12,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 06:16:12,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 06:16:12,922 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:16:12,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:16:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash -277182823, now seen corresponding path program 1 times [2023-01-28 06:16:12,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:16:12,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524447929] [2023-01-28 06:16:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:16:12,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:16:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:16:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 06:16:13,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:16:13,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524447929] [2023-01-28 06:16:13,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524447929] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:16:13,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130458568] [2023-01-28 06:16:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:16:13,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:16:13,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:16:13,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:16:13,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 06:16:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:16:13,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 06:16:13,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:16:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 06:16:13,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:16:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 06:16:13,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130458568] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:16:13,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:16:13,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-01-28 06:16:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969393293] [2023-01-28 06:16:13,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:16:13,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 06:16:13,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:16:13,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 06:16:13,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-28 06:16:13,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 290 [2023-01-28 06:16:13,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1052 transitions, 15295 flow. Second operand has 13 states, 13 states have (on average 126.6923076923077) internal successors, (1647), 13 states have internal predecessors, (1647), 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) [2023-01-28 06:16:13,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:16:13,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 290 [2023-01-28 06:16:13,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:16:20,660 INFO L130 PetriNetUnfolder]: 11020/21354 cut-off events. [2023-01-28 06:16:20,660 INFO L131 PetriNetUnfolder]: For 2072646/2072646 co-relation queries the response was YES. [2023-01-28 06:16:20,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274240 conditions, 21354 events. 11020/21354 cut-off events. For 2072646/2072646 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 166342 event pairs, 2503 based on Foata normal form. 85/21332 useless extension candidates. Maximal degree in co-relation 264696. Up to 9638 conditions per place. [2023-01-28 06:16:20,938 INFO L137 encePairwiseOnDemand]: 280/290 looper letters, 998 selfloop transitions, 428 changer transitions 14/1440 dead transitions. [2023-01-28 06:16:20,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 1440 transitions, 24577 flow [2023-01-28 06:16:20,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 06:16:20,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 06:16:20,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2117 transitions. [2023-01-28 06:16:20,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2023-01-28 06:16:20,943 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2117 transitions. [2023-01-28 06:16:20,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2117 transitions. [2023-01-28 06:16:20,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:16:20,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2117 transitions. [2023-01-28 06:16:20,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 132.3125) internal successors, (2117), 16 states have internal predecessors, (2117), 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) [2023-01-28 06:16:20,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 290.0) internal successors, (4930), 17 states have internal predecessors, (4930), 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) [2023-01-28 06:16:20,970 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 290.0) internal successors, (4930), 17 states have internal predecessors, (4930), 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) [2023-01-28 06:16:20,970 INFO L175 Difference]: Start difference. First operand has 356 places, 1052 transitions, 15295 flow. Second operand 16 states and 2117 transitions. [2023-01-28 06:16:20,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 1440 transitions, 24577 flow [2023-01-28 06:16:23,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1440 transitions, 23105 flow, removed 408 selfloop flow, removed 14 redundant places. [2023-01-28 06:16:23,304 INFO L231 Difference]: Finished difference. Result has 365 places, 1152 transitions, 17208 flow [2023-01-28 06:16:23,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=14017, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1052, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=357, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=17208, PETRI_PLACES=365, PETRI_TRANSITIONS=1152} [2023-01-28 06:16:23,305 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 331 predicate places. [2023-01-28 06:16:23,306 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 1152 transitions, 17208 flow [2023-01-28 06:16:23,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 126.6923076923077) internal successors, (1647), 13 states have internal predecessors, (1647), 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) [2023-01-28 06:16:23,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:16:23,306 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:16:23,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 06:16:23,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:16:23,511 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:16:23,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:16:23,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2131210369, now seen corresponding path program 1 times [2023-01-28 06:16:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:16:23,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675395207] [2023-01-28 06:16:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:16:23,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:16:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:16:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:16:24,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:16:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675395207] [2023-01-28 06:16:24,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675395207] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:16:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840789860] [2023-01-28 06:16:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:16:24,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:16:24,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:16:24,285 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:16:24,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 06:16:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:16:24,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 80 conjunts are in the unsatisfiable core [2023-01-28 06:16:24,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:16:24,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-28 06:16:25,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2023-01-28 06:16:25,727 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:16:25,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 45 [2023-01-28 06:16:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:16:38,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:16:39,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2023-01-28 06:16:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:16:39,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840789860] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:16:39,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:16:39,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 20] total 60 [2023-01-28 06:16:39,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145530954] [2023-01-28 06:16:39,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:16:39,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-01-28 06:16:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:16:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-01-28 06:16:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=3402, Unknown=4, NotChecked=0, Total=3782 [2023-01-28 06:16:39,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 290 [2023-01-28 06:16:39,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 1152 transitions, 17208 flow. Second operand has 62 states, 62 states have (on average 91.74193548387096) internal successors, (5688), 62 states have internal predecessors, (5688), 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) [2023-01-28 06:16:39,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:16:39,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 290 [2023-01-28 06:16:39,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:16:59,645 INFO L130 PetriNetUnfolder]: 14139/27802 cut-off events. [2023-01-28 06:16:59,645 INFO L131 PetriNetUnfolder]: For 2704689/2704689 co-relation queries the response was YES. [2023-01-28 06:17:00,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354922 conditions, 27802 events. 14139/27802 cut-off events. For 2704689/2704689 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 221446 event pairs, 3046 based on Foata normal form. 318/28013 useless extension candidates. Maximal degree in co-relation 345507. Up to 13434 conditions per place. [2023-01-28 06:17:00,183 INFO L137 encePairwiseOnDemand]: 272/290 looper letters, 1192 selfloop transitions, 709 changer transitions 105/2006 dead transitions. [2023-01-28 06:17:00,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 2006 transitions, 37789 flow [2023-01-28 06:17:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-01-28 06:17:00,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-01-28 06:17:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6637 transitions. [2023-01-28 06:17:00,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3316841579210395 [2023-01-28 06:17:00,191 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6637 transitions. [2023-01-28 06:17:00,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6637 transitions. [2023-01-28 06:17:00,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:17:00,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6637 transitions. [2023-01-28 06:17:00,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 96.18840579710145) internal successors, (6637), 69 states have internal predecessors, (6637), 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) [2023-01-28 06:17:00,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 290.0) internal successors, (20300), 70 states have internal predecessors, (20300), 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) [2023-01-28 06:17:00,209 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 290.0) internal successors, (20300), 70 states have internal predecessors, (20300), 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) [2023-01-28 06:17:00,209 INFO L175 Difference]: Start difference. First operand has 365 places, 1152 transitions, 17208 flow. Second operand 69 states and 6637 transitions. [2023-01-28 06:17:00,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 2006 transitions, 37789 flow [2023-01-28 06:17:03,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 2006 transitions, 37253 flow, removed 259 selfloop flow, removed 3 redundant places. [2023-01-28 06:17:03,205 INFO L231 Difference]: Finished difference. Result has 463 places, 1507 transitions, 25413 flow [2023-01-28 06:17:03,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=16982, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=404, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=25413, PETRI_PLACES=463, PETRI_TRANSITIONS=1507} [2023-01-28 06:17:03,206 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 429 predicate places. [2023-01-28 06:17:03,206 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 1507 transitions, 25413 flow [2023-01-28 06:17:03,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 91.74193548387096) internal successors, (5688), 62 states have internal predecessors, (5688), 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) [2023-01-28 06:17:03,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:17:03,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:17:03,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 06:17:03,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:17:03,409 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:17:03,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:17:03,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1071599769, now seen corresponding path program 2 times [2023-01-28 06:17:03,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:17:03,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400713563] [2023-01-28 06:17:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:17:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:17:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:17:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:17:04,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:17:04,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400713563] [2023-01-28 06:17:04,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400713563] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:17:04,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344525674] [2023-01-28 06:17:04,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 06:17:04,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:17:04,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:17:04,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:17:04,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 06:17:04,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:17:04,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:17:04,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 88 conjunts are in the unsatisfiable core [2023-01-28 06:17:04,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:17:04,592 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 06:17:04,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-01-28 06:17:04,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 06:17:04,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-01-28 06:17:05,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:05,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-01-28 06:17:05,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-01-28 06:17:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:17:05,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:17:06,801 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_552 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_552) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-01-28 06:17:06,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:17:06,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-01-28 06:17:06,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:17:06,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-01-28 06:17:06,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-01-28 06:17:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:17:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344525674] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:17:07,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:17:07,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 59 [2023-01-28 06:17:07,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992441526] [2023-01-28 06:17:07,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:17:07,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-01-28 06:17:07,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:17:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-01-28 06:17:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3326, Unknown=1, NotChecked=116, Total=3660 [2023-01-28 06:17:07,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-28 06:17:07,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 1507 transitions, 25413 flow. Second operand has 61 states, 61 states have (on average 87.70491803278688) internal successors, (5350), 61 states have internal predecessors, (5350), 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) [2023-01-28 06:17:07,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:17:07,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-28 06:17:07,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:17:48,540 INFO L130 PetriNetUnfolder]: 23071/46102 cut-off events. [2023-01-28 06:17:48,540 INFO L131 PetriNetUnfolder]: For 4674843/4674843 co-relation queries the response was YES. [2023-01-28 06:17:49,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610805 conditions, 46102 events. 23071/46102 cut-off events. For 4674843/4674843 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 394128 event pairs, 2796 based on Foata normal form. 456/46375 useless extension candidates. Maximal degree in co-relation 601037. Up to 19472 conditions per place. [2023-01-28 06:17:49,937 INFO L137 encePairwiseOnDemand]: 273/290 looper letters, 838 selfloop transitions, 2439 changer transitions 83/3360 dead transitions. [2023-01-28 06:17:49,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 3360 transitions, 69300 flow [2023-01-28 06:17:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-01-28 06:17:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2023-01-28 06:17:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 9016 transitions. [2023-01-28 06:17:49,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31724137931034485 [2023-01-28 06:17:49,945 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 9016 transitions. [2023-01-28 06:17:49,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 9016 transitions. [2023-01-28 06:17:49,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:17:49,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 9016 transitions. [2023-01-28 06:17:49,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 92.0) internal successors, (9016), 98 states have internal predecessors, (9016), 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) [2023-01-28 06:17:49,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 290.0) internal successors, (28710), 99 states have internal predecessors, (28710), 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) [2023-01-28 06:17:49,971 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 290.0) internal successors, (28710), 99 states have internal predecessors, (28710), 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) [2023-01-28 06:17:49,971 INFO L175 Difference]: Start difference. First operand has 463 places, 1507 transitions, 25413 flow. Second operand 98 states and 9016 transitions. [2023-01-28 06:17:49,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 3360 transitions, 69300 flow [2023-01-28 06:18:03,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 3360 transitions, 66946 flow, removed 1153 selfloop flow, removed 11 redundant places. [2023-01-28 06:18:04,000 INFO L231 Difference]: Finished difference. Result has 560 places, 2663 transitions, 50812 flow [2023-01-28 06:18:04,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=24411, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=50812, PETRI_PLACES=560, PETRI_TRANSITIONS=2663} [2023-01-28 06:18:04,001 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 526 predicate places. [2023-01-28 06:18:04,001 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 2663 transitions, 50812 flow [2023-01-28 06:18:04,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 87.70491803278688) internal successors, (5350), 61 states have internal predecessors, (5350), 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) [2023-01-28 06:18:04,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:18:04,002 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:18:04,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 06:18:04,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 06:18:04,207 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:18:04,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:18:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2086904968, now seen corresponding path program 2 times [2023-01-28 06:18:04,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:18:04,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100335225] [2023-01-28 06:18:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:18:04,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:18:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:18:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 06:18:04,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:18:04,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100335225] [2023-01-28 06:18:04,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100335225] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:18:04,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583289758] [2023-01-28 06:18:04,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 06:18:04,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:18:04,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:18:04,474 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:18:04,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 06:18:04,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:18:04,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:18:04,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 06:18:04,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:18:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 06:18:04,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:18:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 06:18:04,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583289758] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:18:04,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:18:04,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2023-01-28 06:18:04,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813313444] [2023-01-28 06:18:04,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:18:04,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 06:18:04,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:18:04,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 06:18:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-01-28 06:18:04,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 290 [2023-01-28 06:18:04,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 2663 transitions, 50812 flow. Second operand has 19 states, 19 states have (on average 126.3157894736842) internal successors, (2400), 19 states have internal predecessors, (2400), 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) [2023-01-28 06:18:04,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:18:04,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 290 [2023-01-28 06:18:04,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:18:38,745 INFO L130 PetriNetUnfolder]: 25549/51215 cut-off events. [2023-01-28 06:18:38,745 INFO L131 PetriNetUnfolder]: For 5186500/5186500 co-relation queries the response was YES. [2023-01-28 06:18:40,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687618 conditions, 51215 events. 25549/51215 cut-off events. For 5186500/5186500 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 445150 event pairs, 5811 based on Foata normal form. 185/51278 useless extension candidates. Maximal degree in co-relation 680967. Up to 21499 conditions per place. [2023-01-28 06:18:40,337 INFO L137 encePairwiseOnDemand]: 280/290 looper letters, 1403 selfloop transitions, 2125 changer transitions 16/3544 dead transitions. [2023-01-28 06:18:40,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 3544 transitions, 75695 flow [2023-01-28 06:18:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 06:18:40,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 06:18:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3140 transitions. [2023-01-28 06:18:40,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511494252873563 [2023-01-28 06:18:40,340 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3140 transitions. [2023-01-28 06:18:40,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3140 transitions. [2023-01-28 06:18:40,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:18:40,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3140 transitions. [2023-01-28 06:18:40,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 130.83333333333334) internal successors, (3140), 24 states have internal predecessors, (3140), 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) [2023-01-28 06:18:40,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 290.0) internal successors, (7250), 25 states have internal predecessors, (7250), 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) [2023-01-28 06:18:40,347 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 290.0) internal successors, (7250), 25 states have internal predecessors, (7250), 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) [2023-01-28 06:18:40,347 INFO L175 Difference]: Start difference. First operand has 560 places, 2663 transitions, 50812 flow. Second operand 24 states and 3140 transitions. [2023-01-28 06:18:40,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 3544 transitions, 75695 flow [2023-01-28 06:19:02,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 3544 transitions, 71209 flow, removed 2149 selfloop flow, removed 22 redundant places. [2023-01-28 06:19:02,863 INFO L231 Difference]: Finished difference. Result has 566 places, 2931 transitions, 59375 flow [2023-01-28 06:19:02,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=47350, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1815, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=59375, PETRI_PLACES=566, PETRI_TRANSITIONS=2931} [2023-01-28 06:19:02,865 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 532 predicate places. [2023-01-28 06:19:02,865 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 2931 transitions, 59375 flow [2023-01-28 06:19:02,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 126.3157894736842) internal successors, (2400), 19 states have internal predecessors, (2400), 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) [2023-01-28 06:19:02,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:19:02,865 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2023-01-28 06:19:02,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 06:19:03,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 06:19:03,070 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:19:03,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:19:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash 674057269, now seen corresponding path program 3 times [2023-01-28 06:19:03,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:19:03,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585988931] [2023-01-28 06:19:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:19:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:19:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:19:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:19:03,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:19:03,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585988931] [2023-01-28 06:19:03,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585988931] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:19:03,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27182224] [2023-01-28 06:19:03,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 06:19:03,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:19:03,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:19:03,224 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:19:03,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 06:19:03,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-01-28 06:19:03,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:19:03,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 06:19:03,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:19:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:19:03,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 06:19:03,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27182224] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:19:03,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 06:19:03,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-01-28 06:19:03,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185342332] [2023-01-28 06:19:03,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:19:03,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:19:03,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:19:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:19:03,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-01-28 06:19:03,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 290 [2023-01-28 06:19:03,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 2931 transitions, 59375 flow. Second operand has 8 states, 8 states have (on average 142.5) internal successors, (1140), 8 states have internal predecessors, (1140), 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) [2023-01-28 06:19:03,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:19:03,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 290 [2023-01-28 06:19:03,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:19:37,470 INFO L130 PetriNetUnfolder]: 24452/49452 cut-off events. [2023-01-28 06:19:37,471 INFO L131 PetriNetUnfolder]: For 4704020/4704062 co-relation queries the response was YES. [2023-01-28 06:19:38,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642381 conditions, 49452 events. 24452/49452 cut-off events. For 4704020/4704062 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 439940 event pairs, 4595 based on Foata normal form. 1450/50867 useless extension candidates. Maximal degree in co-relation 620552. Up to 24291 conditions per place. [2023-01-28 06:19:39,104 INFO L137 encePairwiseOnDemand]: 286/290 looper letters, 1441 selfloop transitions, 13 changer transitions 1820/3577 dead transitions. [2023-01-28 06:19:39,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 3577 transitions, 76979 flow [2023-01-28 06:19:39,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:19:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:19:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1237 transitions. [2023-01-28 06:19:39,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331896551724138 [2023-01-28 06:19:39,105 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1237 transitions. [2023-01-28 06:19:39,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1237 transitions. [2023-01-28 06:19:39,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:19:39,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1237 transitions. [2023-01-28 06:19:39,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.625) internal successors, (1237), 8 states have internal predecessors, (1237), 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) [2023-01-28 06:19:39,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 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) [2023-01-28 06:19:39,108 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 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) [2023-01-28 06:19:39,108 INFO L175 Difference]: Start difference. First operand has 566 places, 2931 transitions, 59375 flow. Second operand 8 states and 1237 transitions. [2023-01-28 06:19:39,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 3577 transitions, 76979 flow [2023-01-28 06:19:53,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 3577 transitions, 73585 flow, removed 1006 selfloop flow, removed 11 redundant places. [2023-01-28 06:19:53,583 INFO L231 Difference]: Finished difference. Result has 566 places, 1362 transitions, 24020 flow [2023-01-28 06:19:53,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=41819, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=24020, PETRI_PLACES=566, PETRI_TRANSITIONS=1362} [2023-01-28 06:19:53,585 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 532 predicate places. [2023-01-28 06:19:53,585 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 1362 transitions, 24020 flow [2023-01-28 06:19:53,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.5) internal successors, (1140), 8 states have internal predecessors, (1140), 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) [2023-01-28 06:19:53,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:19:53,586 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:19:53,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 06:19:53,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 06:19:53,793 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:19:53,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:19:53,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1429281689, now seen corresponding path program 3 times [2023-01-28 06:19:53,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:19:53,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800589438] [2023-01-28 06:19:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:19:53,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:19:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:19:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 06:19:53,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:19:53,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800589438] [2023-01-28 06:19:53,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800589438] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:19:53,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789973197] [2023-01-28 06:19:53,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 06:19:53,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:19:53,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:19:53,998 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:19:54,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 06:19:54,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-28 06:19:54,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:19:54,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 06:19:54,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:19:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 06:19:54,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:19:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 06:19:54,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789973197] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:19:54,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:19:54,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 17 [2023-01-28 06:19:54,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830870390] [2023-01-28 06:19:54,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:19:54,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 06:19:54,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:19:54,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 06:19:54,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-01-28 06:19:54,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 290 [2023-01-28 06:19:54,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1362 transitions, 24020 flow. Second operand has 18 states, 18 states have (on average 126.33333333333333) internal successors, (2274), 18 states have internal predecessors, (2274), 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) [2023-01-28 06:19:54,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:19:54,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 290 [2023-01-28 06:19:54,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:20:07,595 INFO L130 PetriNetUnfolder]: 13067/27104 cut-off events. [2023-01-28 06:20:07,595 INFO L131 PetriNetUnfolder]: For 2762400/2762400 co-relation queries the response was YES. [2023-01-28 06:20:08,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368480 conditions, 27104 events. 13067/27104 cut-off events. For 2762400/2762400 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 226788 event pairs, 2418 based on Foata normal form. 28/27132 useless extension candidates. Maximal degree in co-relation 355048. Up to 12415 conditions per place. [2023-01-28 06:20:08,273 INFO L137 encePairwiseOnDemand]: 282/290 looper letters, 828 selfloop transitions, 711 changer transitions 133/1672 dead transitions. [2023-01-28 06:20:08,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 1672 transitions, 32775 flow [2023-01-28 06:20:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 06:20:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 06:20:08,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2507 transitions. [2023-01-28 06:20:08,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45499092558983667 [2023-01-28 06:20:08,275 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2507 transitions. [2023-01-28 06:20:08,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2507 transitions. [2023-01-28 06:20:08,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:20:08,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2507 transitions. [2023-01-28 06:20:08,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 131.94736842105263) internal successors, (2507), 19 states have internal predecessors, (2507), 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) [2023-01-28 06:20:08,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 290.0) internal successors, (5800), 20 states have internal predecessors, (5800), 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) [2023-01-28 06:20:08,280 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 290.0) internal successors, (5800), 20 states have internal predecessors, (5800), 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) [2023-01-28 06:20:08,280 INFO L175 Difference]: Start difference. First operand has 566 places, 1362 transitions, 24020 flow. Second operand 19 states and 2507 transitions. [2023-01-28 06:20:08,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 1672 transitions, 32775 flow [2023-01-28 06:20:13,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 1672 transitions, 29242 flow, removed 631 selfloop flow, removed 39 redundant places. [2023-01-28 06:20:13,074 INFO L231 Difference]: Finished difference. Result has 544 places, 1328 transitions, 21901 flow [2023-01-28 06:20:13,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=20657, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=707, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=21901, PETRI_PLACES=544, PETRI_TRANSITIONS=1328} [2023-01-28 06:20:13,075 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 510 predicate places. [2023-01-28 06:20:13,075 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 1328 transitions, 21901 flow [2023-01-28 06:20:13,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 126.33333333333333) internal successors, (2274), 18 states have internal predecessors, (2274), 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) [2023-01-28 06:20:13,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:20:13,076 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:20:13,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 06:20:13,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 06:20:13,281 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:20:13,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:20:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1088570660, now seen corresponding path program 3 times [2023-01-28 06:20:13,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:20:13,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745284203] [2023-01-28 06:20:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:20:13,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:20:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:20:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:20:14,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:20:14,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745284203] [2023-01-28 06:20:14,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745284203] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:20:14,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496809791] [2023-01-28 06:20:14,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 06:20:14,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:20:14,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:20:14,377 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:20:14,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 06:20:14,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 06:20:14,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:20:14,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 93 conjunts are in the unsatisfiable core [2023-01-28 06:20:14,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:20:14,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-28 06:20:15,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:20:15,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2023-01-28 06:20:15,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:20:15,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2023-01-28 06:20:16,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 45 [2023-01-28 06:20:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:20:18,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:20:20,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-01-28 06:20:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:20:20,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496809791] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:20:20,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:20:20,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 75 [2023-01-28 06:20:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805907680] [2023-01-28 06:20:20,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:20:20,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-01-28 06:20:20,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:20:20,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-01-28 06:20:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=5426, Unknown=1, NotChecked=0, Total=5700 [2023-01-28 06:20:20,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 290 [2023-01-28 06:20:20,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1328 transitions, 21901 flow. Second operand has 76 states, 76 states have (on average 92.01315789473684) internal successors, (6993), 76 states have internal predecessors, (6993), 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) [2023-01-28 06:20:20,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:20:20,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 290 [2023-01-28 06:20:20,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:20:37,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-28 06:20:52,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:20:56,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:21:00,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:21:37,170 INFO L130 PetriNetUnfolder]: 11344/24846 cut-off events. [2023-01-28 06:21:37,173 INFO L131 PetriNetUnfolder]: For 1519360/1519360 co-relation queries the response was YES. [2023-01-28 06:21:37,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264293 conditions, 24846 events. 11344/24846 cut-off events. For 1519360/1519360 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 213112 event pairs, 1470 based on Foata normal form. 81/24927 useless extension candidates. Maximal degree in co-relation 260742. Up to 10182 conditions per place. [2023-01-28 06:21:37,734 INFO L137 encePairwiseOnDemand]: 274/290 looper letters, 815 selfloop transitions, 1406 changer transitions 628/2849 dead transitions. [2023-01-28 06:21:37,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 2849 transitions, 52746 flow [2023-01-28 06:21:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2023-01-28 06:21:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2023-01-28 06:21:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 13760 transitions. [2023-01-28 06:21:37,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3272294887039239 [2023-01-28 06:21:37,747 INFO L72 ComplementDD]: Start complementDD. Operand 145 states and 13760 transitions. [2023-01-28 06:21:37,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 13760 transitions. [2023-01-28 06:21:37,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:21:37,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 145 states and 13760 transitions. [2023-01-28 06:21:37,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 146 states, 145 states have (on average 94.89655172413794) internal successors, (13760), 145 states have internal predecessors, (13760), 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) [2023-01-28 06:21:37,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 146 states, 146 states have (on average 290.0) internal successors, (42340), 146 states have internal predecessors, (42340), 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) [2023-01-28 06:21:37,786 INFO L81 ComplementDD]: Finished complementDD. Result has 146 states, 146 states have (on average 290.0) internal successors, (42340), 146 states have internal predecessors, (42340), 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) [2023-01-28 06:21:37,786 INFO L175 Difference]: Start difference. First operand has 544 places, 1328 transitions, 21901 flow. Second operand 145 states and 13760 transitions. [2023-01-28 06:21:37,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 2849 transitions, 52746 flow [2023-01-28 06:21:42,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 2849 transitions, 50911 flow, removed 146 selfloop flow, removed 19 redundant places. [2023-01-28 06:21:42,552 INFO L231 Difference]: Finished difference. Result has 683 places, 1617 transitions, 27246 flow [2023-01-28 06:21:42,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=20469, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=145, PETRI_FLOW=27246, PETRI_PLACES=683, PETRI_TRANSITIONS=1617} [2023-01-28 06:21:42,553 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 649 predicate places. [2023-01-28 06:21:42,554 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 1617 transitions, 27246 flow [2023-01-28 06:21:42,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 92.01315789473684) internal successors, (6993), 76 states have internal predecessors, (6993), 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) [2023-01-28 06:21:42,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:21:42,555 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:21:42,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 06:21:42,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:21:42,756 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:21:42,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:21:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash -543570794, now seen corresponding path program 4 times [2023-01-28 06:21:42,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:21:42,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096688810] [2023-01-28 06:21:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:21:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:21:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:21:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:21:44,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:21:44,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096688810] [2023-01-28 06:21:44,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096688810] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:21:44,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211785492] [2023-01-28 06:21:44,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 06:21:44,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:21:44,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:21:44,063 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:21:44,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 06:21:44,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 06:21:44,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:21:44,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 107 conjunts are in the unsatisfiable core [2023-01-28 06:21:44,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:21:44,213 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-28 06:21:44,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-01-28 06:21:44,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-28 06:21:44,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2023-01-28 06:21:44,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:21:44,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2023-01-28 06:21:45,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:21:45,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2023-01-28 06:21:46,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 45 [2023-01-28 06:21:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:21:49,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:21:52,215 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:21:52,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-01-28 06:21:52,225 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:21:52,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-01-28 06:21:52,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-01-28 06:21:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:21:52,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211785492] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:21:52,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:21:52,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 26] total 80 [2023-01-28 06:21:52,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209142491] [2023-01-28 06:21:52,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:21:52,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-01-28 06:21:52,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:21:52,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-01-28 06:21:52,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=6231, Unknown=1, NotChecked=0, Total=6642 [2023-01-28 06:21:52,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-01-28 06:21:52,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 1617 transitions, 27246 flow. Second operand has 82 states, 82 states have (on average 87.86585365853658) internal successors, (7205), 82 states have internal predecessors, (7205), 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) [2023-01-28 06:21:52,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:21:52,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-01-28 06:21:52,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:21:55,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-28 06:22:00,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-28 06:22:10,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:22:13,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-28 06:22:18,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-28 06:22:22,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:22:30,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:22:39,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-28 06:22:42,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-28 06:22:45,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:22:51,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:22:53,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:22:55,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-28 06:22:58,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:01,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:05,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:09,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:14,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:19,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:21,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:24,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:28,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:30,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:35,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:37,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:43,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:47,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:51,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:23:59,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:24:03,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:24:07,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 06:24:23,022 WARN L222 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 99 DAG size of output: 86 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 06:24:25,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:24:30,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:25:00,057 WARN L222 SmtUtils]: Spent 25.03s on a formula simplification. DAG size of input: 110 DAG size of output: 110 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 06:25:05,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:25:09,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:25:12,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:25:15,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:25:17,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:25:44,760 WARN L222 SmtUtils]: Spent 24.26s on a formula simplification. DAG size of input: 135 DAG size of output: 121 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 06:25:47,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:25:48,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:25:56,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 06:25:57,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 06:26:04,259 WARN L222 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 110 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 06:26:26,001 WARN L222 SmtUtils]: Spent 19.42s on a formula simplification. DAG size of input: 125 DAG size of output: 111 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 06:26:44,860 WARN L222 SmtUtils]: Spent 18.04s on a formula simplification. DAG size of input: 119 DAG size of output: 106 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 06:26:47,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:26:49,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:26:51,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:26:53,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 06:26:55,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:27:26,766 WARN L222 SmtUtils]: Spent 28.86s on a formula simplification. DAG size of input: 109 DAG size of output: 109 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 06:27:32,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 06:28:02,589 WARN L222 SmtUtils]: Spent 29.29s on a formula simplification. DAG size of input: 136 DAG size of output: 121 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 06:28:05,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 06:28:15,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:28:17,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:28:49,994 WARN L222 SmtUtils]: Spent 31.72s on a formula simplification. DAG size of input: 127 DAG size of output: 127 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 06:28:52,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 06:28:55,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] Received shutdown request... [2023-01-28 06:29:00,766 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 06:29:00,766 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 06:29:01,310 WARN L238 SmtUtils]: Removed 18 from assertion stack [2023-01-28 06:29:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-01-28 06:29:01,311 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-28 06:29:01,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 06:29:01,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-01-28 06:29:01,512 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 97 for 2064ms.. [2023-01-28 06:29:01,513 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-01-28 06:29:01,513 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-28 06:29:01,513 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-28 06:29:01,513 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-28 06:29:01,513 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-28 06:29:01,514 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 3, 3, 1, 1, 1, 1] [2023-01-28 06:29:01,518 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:29:01,518 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:29:01,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:29:01 BasicIcfg [2023-01-28 06:29:01,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:29:01,523 INFO L158 Benchmark]: Toolchain (without parser) took 842868.29ms. Allocated memory was 421.5MB in the beginning and 12.3GB in the end (delta: 11.9GB). Free memory was 384.4MB in the beginning and 10.0GB in the end (delta: -9.6GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-01-28 06:29:01,523 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 329.3MB. Free memory is still 284.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:29:01,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.60ms. Allocated memory is still 421.5MB. Free memory was 384.4MB in the beginning and 355.2MB in the end (delta: 29.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-01-28 06:29:01,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.73ms. Allocated memory is still 421.5MB. Free memory was 355.2MB in the beginning and 352.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:29:01,524 INFO L158 Benchmark]: Boogie Preprocessor took 20.85ms. Allocated memory is still 421.5MB. Free memory was 352.4MB in the beginning and 351.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:29:01,524 INFO L158 Benchmark]: RCFGBuilder took 393.07ms. Allocated memory is still 421.5MB. Free memory was 351.0MB in the beginning and 333.5MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-28 06:29:01,524 INFO L158 Benchmark]: TraceAbstraction took 841975.34ms. Allocated memory was 421.5MB in the beginning and 12.3GB in the end (delta: 11.9GB). Free memory was 332.8MB in the beginning and 10.0GB in the end (delta: -9.6GB). Peak memory consumption was 2.2GB. Max. memory is 16.0GB. [2023-01-28 06:29:01,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 329.3MB. Free memory is still 284.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 433.60ms. Allocated memory is still 421.5MB. Free memory was 384.4MB in the beginning and 355.2MB in the end (delta: 29.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.73ms. Allocated memory is still 421.5MB. Free memory was 355.2MB in the beginning and 352.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.85ms. Allocated memory is still 421.5MB. Free memory was 352.4MB in the beginning and 351.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 393.07ms. Allocated memory is still 421.5MB. Free memory was 351.0MB in the beginning and 333.5MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 841975.34ms. Allocated memory was 421.5MB in the beginning and 12.3GB in the end (delta: 11.9GB). Free memory was 332.8MB in the beginning and 10.0GB in the end (delta: -9.6GB). Peak memory consumption was 2.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 141 PlacesBefore, 34 PlacesAfterwards, 144 TransitionsBefore, 32 TransitionsAfterwards, 6492 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 5 ChoiceCompositions, 135 TotalNumberOfCompositions, 8991 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6737, independent: 6555, independent conditional: 0, independent unconditional: 6555, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3666, independent: 3614, independent conditional: 0, independent unconditional: 3614, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6737, independent: 2941, independent conditional: 0, independent unconditional: 2941, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 3666, unknown conditional: 0, unknown unconditional: 3666] , Statistics on independence cache: Total cache size (in pairs): 171, Positive cache size: 156, Positive conditional cache size: 0, Positive unconditional cache size: 156, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 97 for 2064ms.. - TimeoutResultAtElement [Line: 1022]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 97 for 2064ms.. - TimeoutResultAtElement [Line: 1023]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 97 for 2064ms.. - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 97 for 2064ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 240 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 841.9s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 779.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 466 mSolverCounterUnknown, 8322 SdHoareTripleChecker+Valid, 192.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8322 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 187.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2612 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 659 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57243 IncrementalHoareTripleChecker+Invalid, 60980 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 659 mSolverCounterUnsat, 2 mSDtfsCounter, 57243 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1833 GetRequests, 609 SyntacticMatches, 49 SemanticMatches, 1174 ConstructedPredicates, 5 IntricatePredicates, 7 DeprecatedPredicates, 49586 ImplicationChecksByTransitivity, 410.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59375occurred in iteration=16, InterpolantAutomatonStates: 650, 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 54.8s InterpolantComputationTime, 1018 NumberOfCodeBlocks, 1011 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1385 ConstructedInterpolants, 44 QuantifiedInterpolants, 21224 SizeOfPredicates, 243 NumberOfNonLiveVariables, 4072 ConjunctsInSsa, 605 ConjunctsInUnsatCore, 45 InterpolantComputations, 9 PerfectInterpolantSequences, 239/983 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown