./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack_longer-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack_longer-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:44:00,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:44:00,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:44:00,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:44:00,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:44:00,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:44:00,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:44:00,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:44:00,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:44:00,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:44:00,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:44:00,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:44:00,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:44:00,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:44:00,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:44:00,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:44:00,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:44:00,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:44:00,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:44:00,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:44:00,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:44:00,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:44:00,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:44:00,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:44:00,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:44:00,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:44:00,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:44:00,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:44:00,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:44:00,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:44:00,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:44:00,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:44:00,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:44:00,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:44:00,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:44:00,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:44:00,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:44:00,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:44:00,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:44:00,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:44:00,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:44:00,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:44:00,168 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:44:00,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:44:00,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:44:00,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:44:00,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:44:00,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:44:00,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:44:00,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:44:00,172 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:44:00,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:44:00,173 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:44:00,173 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:44:00,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:44:00,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:44:00,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:44:00,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:44:00,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:44:00,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:44:00,174 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:44:00,175 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:44:00,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:44:00,175 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:44:00,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:44:00,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:44:00,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:44:00,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:44:00,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:44:00,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:44:00,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:44:00,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:44:00,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:44:00,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:44:00,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:44:00,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:44:00,178 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:44:00,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:44:00,178 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:44:00,178 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:44:00,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:44:00,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:44:00,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:44:00,479 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:44:00,479 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:44:00,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-1.i [2023-09-01 04:44:01,797 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:44:02,064 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:44:02,068 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-1.i [2023-09-01 04:44:02,083 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cd59751e/344458e5876b476492601b380c80125c/FLAGb53981f30 [2023-09-01 04:44:02,096 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cd59751e/344458e5876b476492601b380c80125c [2023-09-01 04:44:02,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:44:02,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:44:02,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:44:02,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:44:02,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:44:02,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441b95fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02, skipping insertion in model container [2023-09-01 04:44:02,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:44:02,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:44:02,534 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_longer-1.i[41527,41540] [2023-09-01 04:44:02,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:44:02,581 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:44:02,630 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_longer-1.i[41527,41540] [2023-09-01 04:44:02,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:44:02,708 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:44:02,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02 WrapperNode [2023-09-01 04:44:02,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:44:02,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:44:02,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:44:02,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:44:02,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,778 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 164 [2023-09-01 04:44:02,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:44:02,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:44:02,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:44:02,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:44:02,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,847 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:44:02,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:44:02,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:44:02,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:44:02,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (1/1) ... [2023-09-01 04:44:02,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:44:02,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:02,892 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) [2023-09-01 04:44:02,902 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 [2023-09-01 04:44:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 04:44:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 04:44:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 04:44:02,926 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 04:44:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:44:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:44:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 04:44:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:44:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 04:44:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:44:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:44:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:44:02,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:44:02,928 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 04:44:03,046 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:44:03,055 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:44:03,354 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:44:03,361 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:44:03,361 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:44:03,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:44:03 BoogieIcfgContainer [2023-09-01 04:44:03,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:44:03,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:44:03,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:44:03,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:44:03,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:44:02" (1/3) ... [2023-09-01 04:44:03,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2150485b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:44:03, skipping insertion in model container [2023-09-01 04:44:03,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:44:02" (2/3) ... [2023-09-01 04:44:03,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2150485b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:44:03, skipping insertion in model container [2023-09-01 04:44:03,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:44:03" (3/3) ... [2023-09-01 04:44:03,377 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2023-09-01 04:44:03,382 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:44:03,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:44:03,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 04:44:03,388 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:44:03,480 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 04:44:03,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 172 transitions, 360 flow [2023-09-01 04:44:03,651 INFO L130 PetriNetUnfolder]: 10/170 cut-off events. [2023-09-01 04:44:03,651 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:44:03,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 10/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 448 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-09-01 04:44:03,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 172 transitions, 360 flow [2023-09-01 04:44:03,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 161 transitions, 331 flow [2023-09-01 04:44:03,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:44:03,674 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 161 transitions, 331 flow [2023-09-01 04:44:03,677 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 161 transitions, 331 flow [2023-09-01 04:44:03,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 161 transitions, 331 flow [2023-09-01 04:44:03,707 INFO L130 PetriNetUnfolder]: 10/161 cut-off events. [2023-09-01 04:44:03,708 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:44:03,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 161 events. 10/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 373 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-09-01 04:44:03,714 INFO L119 LiptonReduction]: Number of co-enabled transitions 9140 [2023-09-01 04:44:07,364 INFO L134 LiptonReduction]: Checked pairs total: 13304 [2023-09-01 04:44:07,364 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-09-01 04:44:07,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:44:07,383 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=true, 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;@63aeb827, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:44:07,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 04:44:07,388 INFO L130 PetriNetUnfolder]: 1/16 cut-off events. [2023-09-01 04:44:07,388 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:44:07,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:07,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:07,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:07,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash 115018101, now seen corresponding path program 1 times [2023-09-01 04:44:07,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:07,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843178678] [2023-09-01 04:44:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:07,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:07,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:07,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843178678] [2023-09-01 04:44:07,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843178678] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:07,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:07,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:44:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654232762] [2023-09-01 04:44:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:07,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:44:07,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:07,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:44:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:44:07,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 321 [2023-09-01 04:44:07,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:07,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:07,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 321 [2023-09-01 04:44:07,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:08,087 INFO L130 PetriNetUnfolder]: 1214/1987 cut-off events. [2023-09-01 04:44:08,088 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-09-01 04:44:08,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 1987 events. 1214/1987 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9271 event pairs, 424 based on Foata normal form. 0/1402 useless extension candidates. Maximal degree in co-relation 3738. Up to 1295 conditions per place. [2023-09-01 04:44:08,101 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 61 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-09-01 04:44:08,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 275 flow [2023-09-01 04:44:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:44:08,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:44:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-09-01 04:44:08,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597092419522326 [2023-09-01 04:44:08,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-09-01 04:44:08,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-09-01 04:44:08,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:08,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-09-01 04:44:08,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:08,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:08,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:08,133 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 91 flow. Second operand 3 states and 539 transitions. [2023-09-01 04:44:08,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 275 flow [2023-09-01 04:44:08,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 267 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:44:08,140 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 114 flow [2023-09-01 04:44:08,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-09-01 04:44:08,145 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-09-01 04:44:08,145 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 114 flow [2023-09-01 04:44:08,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:08,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:08,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:08,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:44:08,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:08,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:08,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2091787398, now seen corresponding path program 1 times [2023-09-01 04:44:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:08,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305596075] [2023-09-01 04:44:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:08,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:08,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:08,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305596075] [2023-09-01 04:44:08,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305596075] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:08,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:08,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:44:08,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669778814] [2023-09-01 04:44:08,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:08,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:44:08,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:08,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:44:08,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:44:08,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 321 [2023-09-01 04:44:08,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:08,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:08,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 321 [2023-09-01 04:44:08,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:08,561 INFO L130 PetriNetUnfolder]: 1852/3127 cut-off events. [2023-09-01 04:44:08,562 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2023-09-01 04:44:08,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6643 conditions, 3127 events. 1852/3127 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16549 event pairs, 875 based on Foata normal form. 0/2489 useless extension candidates. Maximal degree in co-relation 5870. Up to 1905 conditions per place. [2023-09-01 04:44:08,578 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 72 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-09-01 04:44:08,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 349 flow [2023-09-01 04:44:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:44:08,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:44:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-09-01 04:44:08,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564901349948079 [2023-09-01 04:44:08,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-09-01 04:44:08,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-09-01 04:44:08,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:08,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-09-01 04:44:08,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:08,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:08,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:08,586 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 114 flow. Second operand 3 states and 544 transitions. [2023-09-01 04:44:08,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 349 flow [2023-09-01 04:44:08,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 76 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:44:08,609 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 124 flow [2023-09-01 04:44:08,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-09-01 04:44:08,610 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-09-01 04:44:08,611 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 124 flow [2023-09-01 04:44:08,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:08,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:08,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:08,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:44:08,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:08,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:08,614 INFO L85 PathProgramCache]: Analyzing trace with hash 248309452, now seen corresponding path program 1 times [2023-09-01 04:44:08,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:08,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627768746] [2023-09-01 04:44:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:08,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:08,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:08,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627768746] [2023-09-01 04:44:08,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627768746] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:08,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:08,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:44:08,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030683744] [2023-09-01 04:44:08,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:08,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:44:08,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:08,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:44:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:44:08,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 321 [2023-09-01 04:44:08,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:08,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:08,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 321 [2023-09-01 04:44:08,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:09,139 INFO L130 PetriNetUnfolder]: 2385/3868 cut-off events. [2023-09-01 04:44:09,139 INFO L131 PetriNetUnfolder]: For 452/452 co-relation queries the response was YES. [2023-09-01 04:44:09,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8929 conditions, 3868 events. 2385/3868 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21700 event pairs, 1087 based on Foata normal form. 0/3136 useless extension candidates. Maximal degree in co-relation 6016. Up to 2965 conditions per place. [2023-09-01 04:44:09,191 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 70 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-09-01 04:44:09,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 352 flow [2023-09-01 04:44:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:44:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:44:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-09-01 04:44:09,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617860851505712 [2023-09-01 04:44:09,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-09-01 04:44:09,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-09-01 04:44:09,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:09,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-09-01 04:44:09,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:09,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:09,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:09,198 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 124 flow. Second operand 3 states and 541 transitions. [2023-09-01 04:44:09,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 352 flow [2023-09-01 04:44:09,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:44:09,201 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 138 flow [2023-09-01 04:44:09,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-09-01 04:44:09,201 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-09-01 04:44:09,202 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 138 flow [2023-09-01 04:44:09,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:09,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:09,203 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:09,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:44:09,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:09,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1971434071, now seen corresponding path program 1 times [2023-09-01 04:44:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:09,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782231047] [2023-09-01 04:44:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:09,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:44:09,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:09,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782231047] [2023-09-01 04:44:09,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782231047] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:09,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:09,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:44:09,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167030255] [2023-09-01 04:44:09,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:09,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:44:09,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:09,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:44:09,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:44:09,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 321 [2023-09-01 04:44:09,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:09,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:09,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 321 [2023-09-01 04:44:09,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:09,623 INFO L130 PetriNetUnfolder]: 2078/3581 cut-off events. [2023-09-01 04:44:09,623 INFO L131 PetriNetUnfolder]: For 591/591 co-relation queries the response was YES. [2023-09-01 04:44:09,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8206 conditions, 3581 events. 2078/3581 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 20351 event pairs, 305 based on Foata normal form. 0/3119 useless extension candidates. Maximal degree in co-relation 7784. Up to 2711 conditions per place. [2023-09-01 04:44:09,642 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 59 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-09-01 04:44:09,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 327 flow [2023-09-01 04:44:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:44:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:44:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-09-01 04:44:09,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462097611630322 [2023-09-01 04:44:09,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-09-01 04:44:09,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-09-01 04:44:09,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:09,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-09-01 04:44:09,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:09,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:09,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:09,653 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 138 flow. Second operand 3 states and 526 transitions. [2023-09-01 04:44:09,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 327 flow [2023-09-01 04:44:09,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:44:09,656 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 148 flow [2023-09-01 04:44:09,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-09-01 04:44:09,658 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-09-01 04:44:09,658 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 148 flow [2023-09-01 04:44:09,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:09,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:09,659 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:09,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 04:44:09,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:09,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1971434167, now seen corresponding path program 1 times [2023-09-01 04:44:09,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:09,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451595932] [2023-09-01 04:44:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:09,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:09,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:09,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451595932] [2023-09-01 04:44:09,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451595932] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:09,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807418575] [2023-09-01 04:44:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:09,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:09,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:09,749 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) [2023-09-01 04:44:09,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 04:44:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:09,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:44:09,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:09,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:44:09,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807418575] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:09,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:44:09,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:44:09,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872021113] [2023-09-01 04:44:09,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:09,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:44:09,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:09,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:44:09,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:44:09,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 321 [2023-09-01 04:44:09,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 159.25) internal successors, (637), 4 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:09,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:09,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 321 [2023-09-01 04:44:09,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:10,216 INFO L130 PetriNetUnfolder]: 1922/3347 cut-off events. [2023-09-01 04:44:10,216 INFO L131 PetriNetUnfolder]: For 1405/1405 co-relation queries the response was YES. [2023-09-01 04:44:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7994 conditions, 3347 events. 1922/3347 cut-off events. For 1405/1405 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18859 event pairs, 63 based on Foata normal form. 78/3055 useless extension candidates. Maximal degree in co-relation 7432. Up to 1710 conditions per place. [2023-09-01 04:44:10,235 INFO L137 encePairwiseOnDemand]: 318/321 looper letters, 92 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-09-01 04:44:10,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 488 flow [2023-09-01 04:44:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:44:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:44:10,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 715 transitions. [2023-09-01 04:44:10,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568535825545171 [2023-09-01 04:44:10,238 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 715 transitions. [2023-09-01 04:44:10,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 715 transitions. [2023-09-01 04:44:10,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:10,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 715 transitions. [2023-09-01 04:44:10,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:10,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:10,243 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:10,244 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 148 flow. Second operand 4 states and 715 transitions. [2023-09-01 04:44:10,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 488 flow [2023-09-01 04:44:10,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:44:10,247 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 144 flow [2023-09-01 04:44:10,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-09-01 04:44:10,248 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-09-01 04:44:10,248 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 144 flow [2023-09-01 04:44:10,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.25) internal successors, (637), 4 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:10,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:10,249 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:10,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 04:44:10,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:10,455 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:10,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:10,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2120644532, now seen corresponding path program 1 times [2023-09-01 04:44:10,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:10,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381446716] [2023-09-01 04:44:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:10,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:10,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:10,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381446716] [2023-09-01 04:44:10,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381446716] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:10,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690455381] [2023-09-01 04:44:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:10,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:10,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:10,535 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) [2023-09-01 04:44:10,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 04:44:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:10,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:44:10,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:10,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:44:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:10,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690455381] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:44:10,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:44:10,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-09-01 04:44:10,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592683849] [2023-09-01 04:44:10,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:44:10,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:44:10,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:10,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:44:10,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:44:10,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 321 [2023-09-01 04:44:10,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 144 flow. Second operand has 10 states, 10 states have (on average 155.7) internal successors, (1557), 10 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:10,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:10,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 321 [2023-09-01 04:44:10,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:11,544 INFO L130 PetriNetUnfolder]: 3940/6517 cut-off events. [2023-09-01 04:44:11,544 INFO L131 PetriNetUnfolder]: For 2849/2849 co-relation queries the response was YES. [2023-09-01 04:44:11,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16253 conditions, 6517 events. 3940/6517 cut-off events. For 2849/2849 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 36306 event pairs, 613 based on Foata normal form. 94/5873 useless extension candidates. Maximal degree in co-relation 15484. Up to 2055 conditions per place. [2023-09-01 04:44:11,583 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 208 selfloop transitions, 34 changer transitions 3/247 dead transitions. [2023-09-01 04:44:11,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 247 transitions, 1334 flow [2023-09-01 04:44:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:44:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:44:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2361 transitions. [2023-09-01 04:44:11,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253671562082777 [2023-09-01 04:44:11,589 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2361 transitions. [2023-09-01 04:44:11,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2361 transitions. [2023-09-01 04:44:11,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:11,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2361 transitions. [2023-09-01 04:44:11,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.64285714285714) internal successors, (2361), 14 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:11,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 321.0) internal successors, (4815), 15 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:11,605 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 321.0) internal successors, (4815), 15 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:11,605 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 144 flow. Second operand 14 states and 2361 transitions. [2023-09-01 04:44:11,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 247 transitions, 1334 flow [2023-09-01 04:44:11,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 247 transitions, 1309 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:44:11,616 INFO L231 Difference]: Finished difference. Result has 65 places, 77 transitions, 379 flow [2023-09-01 04:44:11,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=379, PETRI_PLACES=65, PETRI_TRANSITIONS=77} [2023-09-01 04:44:11,619 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2023-09-01 04:44:11,619 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 77 transitions, 379 flow [2023-09-01 04:44:11,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 155.7) internal successors, (1557), 10 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:11,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:11,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:11,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:11,825 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,SelfDestructingSolverStorable5 [2023-09-01 04:44:11,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:11,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash -903934084, now seen corresponding path program 1 times [2023-09-01 04:44:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:11,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418918441] [2023-09-01 04:44:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:11,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:11,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:11,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418918441] [2023-09-01 04:44:11,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418918441] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:11,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:11,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:44:11,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127240170] [2023-09-01 04:44:11,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:11,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:44:11,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:11,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:44:11,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:44:11,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 321 [2023-09-01 04:44:11,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 77 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:11,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:11,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 321 [2023-09-01 04:44:11,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:12,155 INFO L130 PetriNetUnfolder]: 1387/2558 cut-off events. [2023-09-01 04:44:12,155 INFO L131 PetriNetUnfolder]: For 1843/1843 co-relation queries the response was YES. [2023-09-01 04:44:12,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 2558 events. 1387/2558 cut-off events. For 1843/1843 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13874 event pairs, 289 based on Foata normal form. 214/2700 useless extension candidates. Maximal degree in co-relation 6871. Up to 1848 conditions per place. [2023-09-01 04:44:12,166 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 57 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2023-09-01 04:44:12,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 68 transitions, 439 flow [2023-09-01 04:44:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:44:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:44:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-09-01 04:44:12,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347871235721703 [2023-09-01 04:44:12,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-09-01 04:44:12,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-09-01 04:44:12,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:12,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-09-01 04:44:12,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:12,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:12,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:12,172 INFO L175 Difference]: Start difference. First operand has 65 places, 77 transitions, 379 flow. Second operand 3 states and 515 transitions. [2023-09-01 04:44:12,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 68 transitions, 439 flow [2023-09-01 04:44:12,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 421 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-09-01 04:44:12,185 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 263 flow [2023-09-01 04:44:12,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-09-01 04:44:12,186 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-09-01 04:44:12,186 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 263 flow [2023-09-01 04:44:12,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:12,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:12,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:12,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:44:12,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:12,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:12,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1315385528, now seen corresponding path program 1 times [2023-09-01 04:44:12,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:12,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279059032] [2023-09-01 04:44:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:12,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:12,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:12,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279059032] [2023-09-01 04:44:12,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279059032] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:12,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322198588] [2023-09-01 04:44:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:12,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:12,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:12,259 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) [2023-09-01 04:44:12,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 04:44:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:12,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:44:12,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:12,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:44:12,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322198588] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:12,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:44:12,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-09-01 04:44:12,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136947036] [2023-09-01 04:44:12,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:12,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:44:12,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:12,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:44:12,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:44:12,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 321 [2023-09-01 04:44:12,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:12,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:12,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 321 [2023-09-01 04:44:12,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:12,734 INFO L130 PetriNetUnfolder]: 1398/2655 cut-off events. [2023-09-01 04:44:12,734 INFO L131 PetriNetUnfolder]: For 1694/1694 co-relation queries the response was YES. [2023-09-01 04:44:12,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7597 conditions, 2655 events. 1398/2655 cut-off events. For 1694/1694 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14221 event pairs, 323 based on Foata normal form. 154/2725 useless extension candidates. Maximal degree in co-relation 4344. Up to 1448 conditions per place. [2023-09-01 04:44:12,748 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 86 selfloop transitions, 17 changer transitions 2/107 dead transitions. [2023-09-01 04:44:12,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 107 transitions, 669 flow [2023-09-01 04:44:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:44:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:44:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1006 transitions. [2023-09-01 04:44:12,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223260643821391 [2023-09-01 04:44:12,751 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1006 transitions. [2023-09-01 04:44:12,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1006 transitions. [2023-09-01 04:44:12,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:12,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1006 transitions. [2023-09-01 04:44:12,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:12,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:12,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:12,757 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 263 flow. Second operand 6 states and 1006 transitions. [2023-09-01 04:44:12,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 107 transitions, 669 flow [2023-09-01 04:44:12,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 107 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:44:12,763 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 328 flow [2023-09-01 04:44:12,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=328, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-09-01 04:44:12,763 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-09-01 04:44:12,764 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 328 flow [2023-09-01 04:44:12,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:12,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:12,764 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 04:44:12,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:12,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:12,971 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:12,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash -630645365, now seen corresponding path program 1 times [2023-09-01 04:44:12,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:12,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190949475] [2023-09-01 04:44:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:12,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:44:13,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:13,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190949475] [2023-09-01 04:44:13,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190949475] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:13,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:13,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:44:13,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005925767] [2023-09-01 04:44:13,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:13,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:44:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:44:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:44:13,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 321 [2023-09-01 04:44:13,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:13,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 321 [2023-09-01 04:44:13,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:13,269 INFO L130 PetriNetUnfolder]: 1264/2357 cut-off events. [2023-09-01 04:44:13,270 INFO L131 PetriNetUnfolder]: For 2226/2234 co-relation queries the response was YES. [2023-09-01 04:44:13,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7142 conditions, 2357 events. 1264/2357 cut-off events. For 2226/2234 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12309 event pairs, 405 based on Foata normal form. 4/2315 useless extension candidates. Maximal degree in co-relation 5768. Up to 1381 conditions per place. [2023-09-01 04:44:13,281 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 76 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-09-01 04:44:13,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 614 flow [2023-09-01 04:44:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:44:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:44:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-09-01 04:44:13,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441329179646937 [2023-09-01 04:44:13,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-09-01 04:44:13,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-09-01 04:44:13,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:13,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-09-01 04:44:13,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,288 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 328 flow. Second operand 3 states and 524 transitions. [2023-09-01 04:44:13,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 614 flow [2023-09-01 04:44:13,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 82 transitions, 588 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-09-01 04:44:13,298 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 319 flow [2023-09-01 04:44:13,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-09-01 04:44:13,299 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-09-01 04:44:13,299 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 319 flow [2023-09-01 04:44:13,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:13,300 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 04:44:13,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:44:13,301 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:13,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:13,301 INFO L85 PathProgramCache]: Analyzing trace with hash -630645366, now seen corresponding path program 1 times [2023-09-01 04:44:13,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:13,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500410842] [2023-09-01 04:44:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:13,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:13,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:13,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500410842] [2023-09-01 04:44:13,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500410842] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:13,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:44:13,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:44:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259878534] [2023-09-01 04:44:13,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:13,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:44:13,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:44:13,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:44:13,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 321 [2023-09-01 04:44:13,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:13,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 321 [2023-09-01 04:44:13,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:13,580 INFO L130 PetriNetUnfolder]: 1145/2110 cut-off events. [2023-09-01 04:44:13,581 INFO L131 PetriNetUnfolder]: For 2227/2235 co-relation queries the response was YES. [2023-09-01 04:44:13,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 2110 events. 1145/2110 cut-off events. For 2227/2235 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 10429 event pairs, 405 based on Foata normal form. 48/2156 useless extension candidates. Maximal degree in co-relation 6052. Up to 2012 conditions per place. [2023-09-01 04:44:13,592 INFO L137 encePairwiseOnDemand]: 319/321 looper letters, 65 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-09-01 04:44:13,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 496 flow [2023-09-01 04:44:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:44:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:44:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-09-01 04:44:13,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368639667705088 [2023-09-01 04:44:13,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-09-01 04:44:13,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-09-01 04:44:13,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:13,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-09-01 04:44:13,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,599 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 319 flow. Second operand 3 states and 517 transitions. [2023-09-01 04:44:13,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 496 flow [2023-09-01 04:44:13,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:44:13,605 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 312 flow [2023-09-01 04:44:13,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-09-01 04:44:13,606 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-09-01 04:44:13,606 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 312 flow [2023-09-01 04:44:13,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:13,607 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:13,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:44:13,607 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:13,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:13,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1739711373, now seen corresponding path program 1 times [2023-09-01 04:44:13,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:13,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572810499] [2023-09-01 04:44:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:13,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:13,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572810499] [2023-09-01 04:44:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572810499] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534437449] [2023-09-01 04:44:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:13,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:13,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:13,733 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) [2023-09-01 04:44:13,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 04:44:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:13,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 04:44:13,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:44:13,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:44:13,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534437449] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:13,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:44:13,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-09-01 04:44:13,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285977236] [2023-09-01 04:44:13,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:13,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:44:13,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:13,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:44:13,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:44:13,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:44:13,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:13,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:13,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:44:13,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:14,251 INFO L130 PetriNetUnfolder]: 1262/2319 cut-off events. [2023-09-01 04:44:14,252 INFO L131 PetriNetUnfolder]: For 2313/2313 co-relation queries the response was YES. [2023-09-01 04:44:14,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7035 conditions, 2319 events. 1262/2319 cut-off events. For 2313/2313 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11546 event pairs, 275 based on Foata normal form. 28/2347 useless extension candidates. Maximal degree in co-relation 6788. Up to 1280 conditions per place. [2023-09-01 04:44:14,264 INFO L137 encePairwiseOnDemand]: 309/321 looper letters, 67 selfloop transitions, 25 changer transitions 0/94 dead transitions. [2023-09-01 04:44:14,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 652 flow [2023-09-01 04:44:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:44:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:44:14,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1102 transitions. [2023-09-01 04:44:14,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49043168669336895 [2023-09-01 04:44:14,268 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1102 transitions. [2023-09-01 04:44:14,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1102 transitions. [2023-09-01 04:44:14,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:14,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1102 transitions. [2023-09-01 04:44:14,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.42857142857142) internal successors, (1102), 7 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:14,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:14,275 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:14,276 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 312 flow. Second operand 7 states and 1102 transitions. [2023-09-01 04:44:14,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 652 flow [2023-09-01 04:44:14,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 94 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:44:14,283 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 414 flow [2023-09-01 04:44:14,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2023-09-01 04:44:14,284 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2023-09-01 04:44:14,284 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 414 flow [2023-09-01 04:44:14,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:14,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:14,285 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:14,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:14,490 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 [2023-09-01 04:44:14,490 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:14,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash -832232940, now seen corresponding path program 1 times [2023-09-01 04:44:14,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:14,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343516286] [2023-09-01 04:44:14,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:14,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:14,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:14,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343516286] [2023-09-01 04:44:14,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343516286] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:14,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376656942] [2023-09-01 04:44:14,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:14,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:14,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:14,605 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) [2023-09-01 04:44:14,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 04:44:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:14,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 04:44:14,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:44:14,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:44:14,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376656942] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:44:14,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:44:14,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-09-01 04:44:14,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236636497] [2023-09-01 04:44:14,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:44:14,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:44:14,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:14,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:44:14,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:44:14,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:44:14,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:14,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:14,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:44:14,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:15,227 INFO L130 PetriNetUnfolder]: 1548/2845 cut-off events. [2023-09-01 04:44:15,227 INFO L131 PetriNetUnfolder]: For 3646/3646 co-relation queries the response was YES. [2023-09-01 04:44:15,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9184 conditions, 2845 events. 1548/2845 cut-off events. For 3646/3646 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14023 event pairs, 389 based on Foata normal form. 44/2889 useless extension candidates. Maximal degree in co-relation 8733. Up to 1397 conditions per place. [2023-09-01 04:44:15,243 INFO L137 encePairwiseOnDemand]: 312/321 looper letters, 99 selfloop transitions, 13 changer transitions 10/124 dead transitions. [2023-09-01 04:44:15,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 124 transitions, 945 flow [2023-09-01 04:44:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:44:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:44:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1128 transitions. [2023-09-01 04:44:15,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020026702269693 [2023-09-01 04:44:15,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1128 transitions. [2023-09-01 04:44:15,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1128 transitions. [2023-09-01 04:44:15,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:15,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1128 transitions. [2023-09-01 04:44:15,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:15,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:15,254 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:15,254 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 414 flow. Second operand 7 states and 1128 transitions. [2023-09-01 04:44:15,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 124 transitions, 945 flow [2023-09-01 04:44:15,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 124 transitions, 921 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-09-01 04:44:15,263 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 530 flow [2023-09-01 04:44:15,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2023-09-01 04:44:15,264 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2023-09-01 04:44:15,264 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 530 flow [2023-09-01 04:44:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:15,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:15,265 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-09-01 04:44:15,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:15,471 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 [2023-09-01 04:44:15,472 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:15,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:15,472 INFO L85 PathProgramCache]: Analyzing trace with hash 248467707, now seen corresponding path program 1 times [2023-09-01 04:44:15,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:15,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069367625] [2023-09-01 04:44:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:15,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:15,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:15,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069367625] [2023-09-01 04:44:15,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069367625] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:15,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516498605] [2023-09-01 04:44:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:15,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:15,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:15,676 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) [2023-09-01 04:44:15,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 04:44:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:15,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:44:15,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:15,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:44:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:15,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516498605] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:44:15,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:44:15,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:44:15,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630796075] [2023-09-01 04:44:15,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:44:15,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:44:15,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:15,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:44:15,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:44:16,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 321 [2023-09-01 04:44:16,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 530 flow. Second operand has 18 states, 18 states have (on average 156.05555555555554) internal successors, (2809), 18 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:16,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:16,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 321 [2023-09-01 04:44:16,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:16,987 INFO L130 PetriNetUnfolder]: 2700/4965 cut-off events. [2023-09-01 04:44:16,987 INFO L131 PetriNetUnfolder]: For 8042/8042 co-relation queries the response was YES. [2023-09-01 04:44:17,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16247 conditions, 4965 events. 2700/4965 cut-off events. For 8042/8042 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 24589 event pairs, 579 based on Foata normal form. 144/5109 useless extension candidates. Maximal degree in co-relation 15519. Up to 1425 conditions per place. [2023-09-01 04:44:17,018 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 253 selfloop transitions, 39 changer transitions 4/298 dead transitions. [2023-09-01 04:44:17,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 298 transitions, 2180 flow [2023-09-01 04:44:17,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 04:44:17,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 04:44:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2845 transitions. [2023-09-01 04:44:17,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213487264064505 [2023-09-01 04:44:17,026 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2845 transitions. [2023-09-01 04:44:17,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2845 transitions. [2023-09-01 04:44:17,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:17,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2845 transitions. [2023-09-01 04:44:17,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 167.35294117647058) internal successors, (2845), 17 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:17,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 321.0) internal successors, (5778), 18 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:17,041 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 321.0) internal successors, (5778), 18 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:17,041 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 530 flow. Second operand 17 states and 2845 transitions. [2023-09-01 04:44:17,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 298 transitions, 2180 flow [2023-09-01 04:44:17,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 298 transitions, 2176 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-09-01 04:44:17,060 INFO L231 Difference]: Finished difference. Result has 98 places, 85 transitions, 851 flow [2023-09-01 04:44:17,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=851, PETRI_PLACES=98, PETRI_TRANSITIONS=85} [2023-09-01 04:44:17,061 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2023-09-01 04:44:17,061 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 85 transitions, 851 flow [2023-09-01 04:44:17,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 156.05555555555554) internal successors, (2809), 18 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:17,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:17,063 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:17,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:17,269 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 [2023-09-01 04:44:17,269 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:17,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:17,269 INFO L85 PathProgramCache]: Analyzing trace with hash 814724820, now seen corresponding path program 1 times [2023-09-01 04:44:17,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:17,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350799240] [2023-09-01 04:44:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:17,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:17,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350799240] [2023-09-01 04:44:17,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350799240] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:17,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110439848] [2023-09-01 04:44:17,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:17,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:17,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:17,428 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) [2023-09-01 04:44:17,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 04:44:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:17,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:44:17,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:17,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:44:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:17,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110439848] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:44:17,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:44:17,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-09-01 04:44:17,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056300736] [2023-09-01 04:44:17,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:44:17,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:44:17,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:17,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:44:17,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:44:17,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 321 [2023-09-01 04:44:17,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 851 flow. Second operand has 16 states, 16 states have (on average 150.125) internal successors, (2402), 16 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:17,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:17,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 321 [2023-09-01 04:44:17,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:18,629 INFO L130 PetriNetUnfolder]: 2968/5461 cut-off events. [2023-09-01 04:44:18,630 INFO L131 PetriNetUnfolder]: For 10940/10940 co-relation queries the response was YES. [2023-09-01 04:44:18,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18566 conditions, 5461 events. 2968/5461 cut-off events. For 10940/10940 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 27952 event pairs, 463 based on Foata normal form. 62/5523 useless extension candidates. Maximal degree in co-relation 17796. Up to 1424 conditions per place. [2023-09-01 04:44:18,666 INFO L137 encePairwiseOnDemand]: 310/321 looper letters, 131 selfloop transitions, 61 changer transitions 19/213 dead transitions. [2023-09-01 04:44:18,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 213 transitions, 1815 flow [2023-09-01 04:44:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:44:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:44:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2189 transitions. [2023-09-01 04:44:18,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4870939029817534 [2023-09-01 04:44:18,672 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2189 transitions. [2023-09-01 04:44:18,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2189 transitions. [2023-09-01 04:44:18,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:18,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2189 transitions. [2023-09-01 04:44:18,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 156.35714285714286) internal successors, (2189), 14 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:18,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 321.0) internal successors, (4815), 15 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:18,684 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 321.0) internal successors, (4815), 15 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:18,684 INFO L175 Difference]: Start difference. First operand has 98 places, 85 transitions, 851 flow. Second operand 14 states and 2189 transitions. [2023-09-01 04:44:18,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 213 transitions, 1815 flow [2023-09-01 04:44:18,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 213 transitions, 1734 flow, removed 33 selfloop flow, removed 5 redundant places. [2023-09-01 04:44:18,718 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 1008 flow [2023-09-01 04:44:18,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1008, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2023-09-01 04:44:18,719 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2023-09-01 04:44:18,719 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 1008 flow [2023-09-01 04:44:18,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 150.125) internal successors, (2402), 16 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:18,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:18,720 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:18,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:18,925 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 [2023-09-01 04:44:18,926 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:18,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1439626184, now seen corresponding path program 2 times [2023-09-01 04:44:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371533022] [2023-09-01 04:44:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:44:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371533022] [2023-09-01 04:44:19,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371533022] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:19,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121572717] [2023-09-01 04:44:19,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:44:19,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:19,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:19,173 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) [2023-09-01 04:44:19,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 04:44:19,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:44:19,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:44:19,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 04:44:19,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:44:19,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:44:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:44:19,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121572717] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:44:19,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:44:19,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-09-01 04:44:19,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944180258] [2023-09-01 04:44:19,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:44:19,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 04:44:19,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:19,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 04:44:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-09-01 04:44:19,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 321 [2023-09-01 04:44:19,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 1008 flow. Second operand has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:19,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:19,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 321 [2023-09-01 04:44:19,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:20,680 INFO L130 PetriNetUnfolder]: 3028/5493 cut-off events. [2023-09-01 04:44:20,680 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-09-01 04:44:20,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19855 conditions, 5493 events. 3028/5493 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 27532 event pairs, 377 based on Foata normal form. 56/5549 useless extension candidates. Maximal degree in co-relation 19067. Up to 1091 conditions per place. [2023-09-01 04:44:20,731 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 217 selfloop transitions, 77 changer transitions 7/303 dead transitions. [2023-09-01 04:44:20,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 303 transitions, 2651 flow [2023-09-01 04:44:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 04:44:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 04:44:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3738 transitions. [2023-09-01 04:44:20,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48520249221183803 [2023-09-01 04:44:20,741 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3738 transitions. [2023-09-01 04:44:20,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3738 transitions. [2023-09-01 04:44:20,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:20,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3738 transitions. [2023-09-01 04:44:20,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 155.75) internal successors, (3738), 24 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:20,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:20,763 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:20,764 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 1008 flow. Second operand 24 states and 3738 transitions. [2023-09-01 04:44:20,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 303 transitions, 2651 flow [2023-09-01 04:44:20,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 303 transitions, 2489 flow, removed 59 selfloop flow, removed 6 redundant places. [2023-09-01 04:44:20,822 INFO L231 Difference]: Finished difference. Result has 125 places, 112 transitions, 1291 flow [2023-09-01 04:44:20,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1291, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2023-09-01 04:44:20,823 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 82 predicate places. [2023-09-01 04:44:20,823 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 112 transitions, 1291 flow [2023-09-01 04:44:20,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:20,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:20,824 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:20,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:21,031 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 [2023-09-01 04:44:21,032 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:21,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:21,033 INFO L85 PathProgramCache]: Analyzing trace with hash 610840954, now seen corresponding path program 3 times [2023-09-01 04:44:21,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:21,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062693314] [2023-09-01 04:44:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:21,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:44:21,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062693314] [2023-09-01 04:44:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062693314] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856621205] [2023-09-01 04:44:21,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:44:21,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:21,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:21,409 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) [2023-09-01 04:44:21,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 04:44:21,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 04:44:21,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:44:21,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 04:44:21,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:44:21,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:44:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:44:21,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856621205] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:44:21,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:44:21,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-09-01 04:44:21,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305849124] [2023-09-01 04:44:21,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:44:21,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 04:44:21,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 04:44:21,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2023-09-01 04:44:22,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:44:22,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 112 transitions, 1291 flow. Second operand has 24 states, 24 states have (on average 151.75) internal successors, (3642), 24 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:22,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:22,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:44:22,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:23,535 INFO L130 PetriNetUnfolder]: 4880/8821 cut-off events. [2023-09-01 04:44:23,535 INFO L131 PetriNetUnfolder]: For 20760/20760 co-relation queries the response was YES. [2023-09-01 04:44:23,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32070 conditions, 8821 events. 4880/8821 cut-off events. For 20760/20760 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 46704 event pairs, 557 based on Foata normal form. 98/8919 useless extension candidates. Maximal degree in co-relation 30961. Up to 1751 conditions per place. [2023-09-01 04:44:23,595 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 300 selfloop transitions, 127 changer transitions 9/438 dead transitions. [2023-09-01 04:44:23,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 438 transitions, 4016 flow [2023-09-01 04:44:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-09-01 04:44:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-09-01 04:44:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4727 transitions. [2023-09-01 04:44:23,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908618899273105 [2023-09-01 04:44:23,602 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4727 transitions. [2023-09-01 04:44:23,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4727 transitions. [2023-09-01 04:44:23,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:23,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4727 transitions. [2023-09-01 04:44:23,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 157.56666666666666) internal successors, (4727), 30 states have internal predecessors, (4727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:23,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 321.0) internal successors, (9951), 31 states have internal predecessors, (9951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:23,626 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 321.0) internal successors, (9951), 31 states have internal predecessors, (9951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:23,626 INFO L175 Difference]: Start difference. First operand has 125 places, 112 transitions, 1291 flow. Second operand 30 states and 4727 transitions. [2023-09-01 04:44:23,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 438 transitions, 4016 flow [2023-09-01 04:44:23,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 438 transitions, 3906 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-09-01 04:44:23,708 INFO L231 Difference]: Finished difference. Result has 151 places, 169 transitions, 2286 flow [2023-09-01 04:44:23,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2286, PETRI_PLACES=151, PETRI_TRANSITIONS=169} [2023-09-01 04:44:23,709 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 108 predicate places. [2023-09-01 04:44:23,709 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 169 transitions, 2286 flow [2023-09-01 04:44:23,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 151.75) internal successors, (3642), 24 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:23,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:23,711 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:23,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:23,917 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 [2023-09-01 04:44:23,918 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:23,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash -587673403, now seen corresponding path program 1 times [2023-09-01 04:44:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:23,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885225793] [2023-09-01 04:44:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:23,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 04:44:24,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:24,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885225793] [2023-09-01 04:44:24,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885225793] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:24,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444674087] [2023-09-01 04:44:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:24,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:24,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:24,327 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) [2023-09-01 04:44:24,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 04:44:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:24,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 04:44:24,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:44:24,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:44:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:44:24,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444674087] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:44:24,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:44:24,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2023-09-01 04:44:24,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455395175] [2023-09-01 04:44:24,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:44:24,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 04:44:24,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:24,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 04:44:24,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-09-01 04:44:24,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:44:24,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 169 transitions, 2286 flow. Second operand has 22 states, 22 states have (on average 152.27272727272728) internal successors, (3350), 22 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:24,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:24,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:44:24,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:26,996 INFO L130 PetriNetUnfolder]: 7657/13804 cut-off events. [2023-09-01 04:44:26,997 INFO L131 PetriNetUnfolder]: For 40560/40560 co-relation queries the response was YES. [2023-09-01 04:44:27,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51238 conditions, 13804 events. 7657/13804 cut-off events. For 40560/40560 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 80948 event pairs, 981 based on Foata normal form. 118/13922 useless extension candidates. Maximal degree in co-relation 50093. Up to 2800 conditions per place. [2023-09-01 04:44:27,096 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 291 selfloop transitions, 235 changer transitions 7/535 dead transitions. [2023-09-01 04:44:27,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 535 transitions, 6178 flow [2023-09-01 04:44:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-09-01 04:44:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-09-01 04:44:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4111 transitions. [2023-09-01 04:44:27,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925712916367122 [2023-09-01 04:44:27,266 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4111 transitions. [2023-09-01 04:44:27,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4111 transitions. [2023-09-01 04:44:27,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:27,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4111 transitions. [2023-09-01 04:44:27,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 158.1153846153846) internal successors, (4111), 26 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:27,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 321.0) internal successors, (8667), 27 states have internal predecessors, (8667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:27,293 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 321.0) internal successors, (8667), 27 states have internal predecessors, (8667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:27,293 INFO L175 Difference]: Start difference. First operand has 151 places, 169 transitions, 2286 flow. Second operand 26 states and 4111 transitions. [2023-09-01 04:44:27,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 535 transitions, 6178 flow [2023-09-01 04:44:27,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 535 transitions, 6074 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-09-01 04:44:27,465 INFO L231 Difference]: Finished difference. Result has 171 places, 295 transitions, 4696 flow [2023-09-01 04:44:27,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4696, PETRI_PLACES=171, PETRI_TRANSITIONS=295} [2023-09-01 04:44:27,467 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2023-09-01 04:44:27,467 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 295 transitions, 4696 flow [2023-09-01 04:44:27,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 152.27272727272728) internal successors, (3350), 22 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:27,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:27,468 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1] [2023-09-01 04:44:27,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:27,674 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 [2023-09-01 04:44:27,674 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:27,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash -177530431, now seen corresponding path program 2 times [2023-09-01 04:44:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:27,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50076510] [2023-09-01 04:44:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:27,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:28,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:28,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50076510] [2023-09-01 04:44:28,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50076510] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:28,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102578532] [2023-09-01 04:44:28,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:44:28,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:28,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:28,195 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) [2023-09-01 04:44:28,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 04:44:28,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:44:28,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:44:28,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 04:44:28,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:28,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:44:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:44:28,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102578532] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:44:28,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:44:28,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 40 [2023-09-01 04:44:28,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288108467] [2023-09-01 04:44:28,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:44:28,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-09-01 04:44:28,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:28,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-09-01 04:44:28,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=1260, Unknown=0, NotChecked=0, Total=1722 [2023-09-01 04:44:29,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 321 [2023-09-01 04:44:29,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 295 transitions, 4696 flow. Second operand has 42 states, 42 states have (on average 156.02380952380952) internal successors, (6553), 42 states have internal predecessors, (6553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:29,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:29,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 321 [2023-09-01 04:44:29,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:32,896 INFO L130 PetriNetUnfolder]: 9853/17826 cut-off events. [2023-09-01 04:44:32,896 INFO L131 PetriNetUnfolder]: For 68052/68052 co-relation queries the response was YES. [2023-09-01 04:44:32,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68802 conditions, 17826 events. 9853/17826 cut-off events. For 68052/68052 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 99014 event pairs, 2267 based on Foata normal form. 210/18036 useless extension candidates. Maximal degree in co-relation 66897. Up to 7919 conditions per place. [2023-09-01 04:44:32,991 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 636 selfloop transitions, 201 changer transitions 0/839 dead transitions. [2023-09-01 04:44:32,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 839 transitions, 9333 flow [2023-09-01 04:44:32,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-09-01 04:44:32,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-09-01 04:44:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 6796 transitions. [2023-09-01 04:44:33,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163741357039738 [2023-09-01 04:44:33,000 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 6796 transitions. [2023-09-01 04:44:33,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 6796 transitions. [2023-09-01 04:44:33,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:33,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 6796 transitions. [2023-09-01 04:44:33,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 165.7560975609756) internal successors, (6796), 41 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:33,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 321.0) internal successors, (13482), 42 states have internal predecessors, (13482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:33,025 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 321.0) internal successors, (13482), 42 states have internal predecessors, (13482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:33,026 INFO L175 Difference]: Start difference. First operand has 171 places, 295 transitions, 4696 flow. Second operand 41 states and 6796 transitions. [2023-09-01 04:44:33,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 839 transitions, 9333 flow [2023-09-01 04:44:33,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 839 transitions, 9067 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-09-01 04:44:33,241 INFO L231 Difference]: Finished difference. Result has 217 places, 334 transitions, 5717 flow [2023-09-01 04:44:33,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=5717, PETRI_PLACES=217, PETRI_TRANSITIONS=334} [2023-09-01 04:44:33,242 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 174 predicate places. [2023-09-01 04:44:33,242 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 334 transitions, 5717 flow [2023-09-01 04:44:33,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 156.02380952380952) internal successors, (6553), 42 states have internal predecessors, (6553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:33,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:33,243 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:33,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:33,443 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 [2023-09-01 04:44:33,444 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:33,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:33,444 INFO L85 PathProgramCache]: Analyzing trace with hash -381876131, now seen corresponding path program 4 times [2023-09-01 04:44:33,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:33,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29803413] [2023-09-01 04:44:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:33,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:44:34,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29803413] [2023-09-01 04:44:34,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29803413] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:34,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332924549] [2023-09-01 04:44:34,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:44:34,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:34,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:34,061 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) [2023-09-01 04:44:34,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 04:44:34,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:44:34,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:44:34,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 04:44:34,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:44:34,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:44:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:44:34,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332924549] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:44:34,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:44:34,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-09-01 04:44:34,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929619038] [2023-09-01 04:44:34,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:44:34,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-09-01 04:44:34,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:34,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-09-01 04:44:34,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2023-09-01 04:44:34,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:44:34,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 334 transitions, 5717 flow. Second operand has 36 states, 36 states have (on average 151.5) internal successors, (5454), 36 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:34,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:34,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:44:34,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:40,130 INFO L130 PetriNetUnfolder]: 13582/24535 cut-off events. [2023-09-01 04:44:40,131 INFO L131 PetriNetUnfolder]: For 115542/115542 co-relation queries the response was YES. [2023-09-01 04:44:40,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96223 conditions, 24535 events. 13582/24535 cut-off events. For 115542/115542 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 145801 event pairs, 1325 based on Foata normal form. 160/24695 useless extension candidates. Maximal degree in co-relation 94010. Up to 4961 conditions per place. [2023-09-01 04:44:40,326 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 491 selfloop transitions, 405 changer transitions 13/911 dead transitions. [2023-09-01 04:44:40,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 911 transitions, 11859 flow [2023-09-01 04:44:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-09-01 04:44:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-09-01 04:44:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7251 transitions. [2023-09-01 04:44:40,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4910605444941081 [2023-09-01 04:44:40,337 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7251 transitions. [2023-09-01 04:44:40,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7251 transitions. [2023-09-01 04:44:40,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:40,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7251 transitions. [2023-09-01 04:44:40,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 157.6304347826087) internal successors, (7251), 46 states have internal predecessors, (7251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:40,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 321.0) internal successors, (15087), 47 states have internal predecessors, (15087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:40,372 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 321.0) internal successors, (15087), 47 states have internal predecessors, (15087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:40,373 INFO L175 Difference]: Start difference. First operand has 217 places, 334 transitions, 5717 flow. Second operand 46 states and 7251 transitions. [2023-09-01 04:44:40,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 911 transitions, 11859 flow [2023-09-01 04:44:40,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 911 transitions, 11485 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-09-01 04:44:40,735 INFO L231 Difference]: Finished difference. Result has 262 places, 477 transitions, 9094 flow [2023-09-01 04:44:40,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=5355, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=9094, PETRI_PLACES=262, PETRI_TRANSITIONS=477} [2023-09-01 04:44:40,736 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2023-09-01 04:44:40,736 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 477 transitions, 9094 flow [2023-09-01 04:44:40,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 151.5) internal successors, (5454), 36 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:40,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:40,737 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:40,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-09-01 04:44:40,939 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 [2023-09-01 04:44:40,940 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:40,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:40,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1765890682, now seen corresponding path program 2 times [2023-09-01 04:44:40,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:40,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363964739] [2023-09-01 04:44:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:40,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:44:41,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:41,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363964739] [2023-09-01 04:44:41,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363964739] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:41,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936255048] [2023-09-01 04:44:41,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:44:41,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:41,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:41,549 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) [2023-09-01 04:44:41,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 04:44:41,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:44:41,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:44:41,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 04:44:41,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:44:41,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:44:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:44:42,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936255048] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:44:42,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:44:42,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-09-01 04:44:42,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035011499] [2023-09-01 04:44:42,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:44:42,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 04:44:42,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 04:44:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2023-09-01 04:44:42,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:44:42,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 477 transitions, 9094 flow. Second operand has 34 states, 34 states have (on average 151.8235294117647) internal successors, (5162), 34 states have internal predecessors, (5162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:42,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:42,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:44:42,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:44:50,247 INFO L130 PetriNetUnfolder]: 19805/35752 cut-off events. [2023-09-01 04:44:50,247 INFO L131 PetriNetUnfolder]: For 185262/185262 co-relation queries the response was YES. [2023-09-01 04:44:50,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143980 conditions, 35752 events. 19805/35752 cut-off events. For 185262/185262 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 234650 event pairs, 2413 based on Foata normal form. 236/35988 useless extension candidates. Maximal degree in co-relation 141700. Up to 7332 conditions per place. [2023-09-01 04:44:50,512 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 459 selfloop transitions, 672 changer transitions 10/1143 dead transitions. [2023-09-01 04:44:50,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 1143 transitions, 18514 flow [2023-09-01 04:44:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-09-01 04:44:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-09-01 04:44:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6173 transitions. [2023-09-01 04:44:50,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930905024362968 [2023-09-01 04:44:50,519 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6173 transitions. [2023-09-01 04:44:50,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6173 transitions. [2023-09-01 04:44:50,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:44:50,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6173 transitions. [2023-09-01 04:44:50,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 158.28205128205127) internal successors, (6173), 39 states have internal predecessors, (6173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:50,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 321.0) internal successors, (12840), 40 states have internal predecessors, (12840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:50,535 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 321.0) internal successors, (12840), 40 states have internal predecessors, (12840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:50,535 INFO L175 Difference]: Start difference. First operand has 262 places, 477 transitions, 9094 flow. Second operand 39 states and 6173 transitions. [2023-09-01 04:44:50,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 1143 transitions, 18514 flow [2023-09-01 04:44:51,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 1143 transitions, 18362 flow, removed 3 selfloop flow, removed 13 redundant places. [2023-09-01 04:44:51,487 INFO L231 Difference]: Finished difference. Result has 295 places, 753 transitions, 16265 flow [2023-09-01 04:44:51,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=8882, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=16265, PETRI_PLACES=295, PETRI_TRANSITIONS=753} [2023-09-01 04:44:51,488 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2023-09-01 04:44:51,488 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 753 transitions, 16265 flow [2023-09-01 04:44:51,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 151.8235294117647) internal successors, (5162), 34 states have internal predecessors, (5162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:51,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:44:51,490 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:44:51,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 04:44:51,695 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 [2023-09-01 04:44:51,696 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:44:51,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:44:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1164475479, now seen corresponding path program 3 times [2023-09-01 04:44:51,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:44:51,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026670540] [2023-09-01 04:44:51,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:44:51,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:44:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:44:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 04:44:52,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:44:52,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026670540] [2023-09-01 04:44:52,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026670540] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:44:52,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127711508] [2023-09-01 04:44:52,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:44:52,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:44:52,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:44:52,335 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:44:52,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 04:44:52,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-09-01 04:44:52,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:44:52,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 04:44:52,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:44:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:44:52,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:44:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:44:53,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127711508] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:44:53,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:44:53,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 30 [2023-09-01 04:44:53,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701024747] [2023-09-01 04:44:53,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:44:53,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-09-01 04:44:53,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:44:53,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-09-01 04:44:53,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-09-01 04:44:53,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:44:53,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 753 transitions, 16265 flow. Second operand has 32 states, 32 states have (on average 152.1875) internal successors, (4870), 32 states have internal predecessors, (4870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:44:53,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:44:53,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:44:53,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:45:11,308 INFO L130 PetriNetUnfolder]: 37492/67765 cut-off events. [2023-09-01 04:45:11,308 INFO L131 PetriNetUnfolder]: For 407136/407136 co-relation queries the response was YES. [2023-09-01 04:45:11,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281007 conditions, 67765 events. 37492/67765 cut-off events. For 407136/407136 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 483908 event pairs, 5219 based on Foata normal form. 132/67897 useless extension candidates. Maximal degree in co-relation 278645. Up to 14107 conditions per place. [2023-09-01 04:45:12,015 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 522 selfloop transitions, 1462 changer transitions 12/1998 dead transitions. [2023-09-01 04:45:12,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1998 transitions, 41153 flow [2023-09-01 04:45:12,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-09-01 04:45:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-09-01 04:45:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6146 transitions. [2023-09-01 04:45:12,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909337806534068 [2023-09-01 04:45:12,020 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6146 transitions. [2023-09-01 04:45:12,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6146 transitions. [2023-09-01 04:45:12,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:45:12,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6146 transitions. [2023-09-01 04:45:12,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 157.5897435897436) internal successors, (6146), 39 states have internal predecessors, (6146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:45:12,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 321.0) internal successors, (12840), 40 states have internal predecessors, (12840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:45:12,036 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 321.0) internal successors, (12840), 40 states have internal predecessors, (12840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:45:12,036 INFO L175 Difference]: Start difference. First operand has 295 places, 753 transitions, 16265 flow. Second operand 39 states and 6146 transitions. [2023-09-01 04:45:12,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1998 transitions, 41153 flow [2023-09-01 04:45:15,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 1998 transitions, 40776 flow, removed 45 selfloop flow, removed 5 redundant places. [2023-09-01 04:45:15,071 INFO L231 Difference]: Finished difference. Result has 339 places, 1639 transitions, 40045 flow [2023-09-01 04:45:15,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=16112, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=689, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=40045, PETRI_PLACES=339, PETRI_TRANSITIONS=1639} [2023-09-01 04:45:15,073 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 296 predicate places. [2023-09-01 04:45:15,073 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 1639 transitions, 40045 flow [2023-09-01 04:45:15,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 152.1875) internal successors, (4870), 32 states have internal predecessors, (4870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:45:15,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:45:15,074 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:45:15,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 04:45:15,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:45:15,277 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:45:15,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:45:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1041082399, now seen corresponding path program 5 times [2023-09-01 04:45:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:45:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739615501] [2023-09-01 04:45:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:45:15,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:45:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:45:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:45:16,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:45:16,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739615501] [2023-09-01 04:45:16,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739615501] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:45:16,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778604177] [2023-09-01 04:45:16,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:45:16,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:45:16,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:45:16,036 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:45:16,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 04:45:16,486 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-09-01 04:45:16,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:45:16,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 04:45:16,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:45:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:45:16,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:45:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:45:17,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778604177] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:45:17,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:45:17,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 50 [2023-09-01 04:45:17,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384292791] [2023-09-01 04:45:17,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:45:17,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-09-01 04:45:17,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:45:17,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-09-01 04:45:17,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=655, Invalid=1997, Unknown=0, NotChecked=0, Total=2652 [2023-09-01 04:45:17,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:45:17,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 1639 transitions, 40045 flow. Second operand has 52 states, 52 states have (on average 151.34615384615384) internal successors, (7870), 52 states have internal predecessors, (7870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:45:17,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:45:17,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:45:17,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:45:52,795 INFO L130 PetriNetUnfolder]: 45162/81567 cut-off events. [2023-09-01 04:45:52,796 INFO L131 PetriNetUnfolder]: For 654528/654528 co-relation queries the response was YES. [2023-09-01 04:45:53,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354235 conditions, 81567 events. 45162/81567 cut-off events. For 654528/654528 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 600494 event pairs, 8613 based on Foata normal form. 314/81881 useless extension candidates. Maximal degree in co-relation 351275. Up to 22407 conditions per place. [2023-09-01 04:45:53,923 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 1053 selfloop transitions, 1542 changer transitions 18/2615 dead transitions. [2023-09-01 04:45:53,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 2615 transitions, 56154 flow [2023-09-01 04:45:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-09-01 04:45:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-09-01 04:45:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 10567 transitions. [2023-09-01 04:45:53,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49132840470544475 [2023-09-01 04:45:53,933 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 10567 transitions. [2023-09-01 04:45:53,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 10567 transitions. [2023-09-01 04:45:53,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:45:53,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 10567 transitions. [2023-09-01 04:45:53,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 157.71641791044777) internal successors, (10567), 67 states have internal predecessors, (10567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:45:53,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 321.0) internal successors, (21828), 68 states have internal predecessors, (21828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:45:53,961 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 321.0) internal successors, (21828), 68 states have internal predecessors, (21828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:45:53,962 INFO L175 Difference]: Start difference. First operand has 339 places, 1639 transitions, 40045 flow. Second operand 67 states and 10567 transitions. [2023-09-01 04:45:53,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 2615 transitions, 56154 flow [2023-09-01 04:45:59,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 2615 transitions, 55497 flow, removed 78 selfloop flow, removed 12 redundant places. [2023-09-01 04:45:59,774 INFO L231 Difference]: Finished difference. Result has 412 places, 1935 transitions, 52081 flow [2023-09-01 04:45:59,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=39168, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=52081, PETRI_PLACES=412, PETRI_TRANSITIONS=1935} [2023-09-01 04:45:59,776 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2023-09-01 04:45:59,776 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 1935 transitions, 52081 flow [2023-09-01 04:45:59,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 151.34615384615384) internal successors, (7870), 52 states have internal predecessors, (7870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:45:59,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:45:59,777 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:45:59,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 04:45:59,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:45:59,977 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:45:59,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:45:59,978 INFO L85 PathProgramCache]: Analyzing trace with hash 121488872, now seen corresponding path program 4 times [2023-09-01 04:45:59,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:45:59,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617643752] [2023-09-01 04:45:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:45:59,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:46:00,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:00,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617643752] [2023-09-01 04:46:00,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617643752] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:00,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306615318] [2023-09-01 04:46:00,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:46:00,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:00,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:00,809 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:46:00,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 04:46:01,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:46:01,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:46:01,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 04:46:01,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:46:01,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:46:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:46:01,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306615318] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:46:01,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:46:01,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 48 [2023-09-01 04:46:01,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773336320] [2023-09-01 04:46:01,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:46:01,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-09-01 04:46:01,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:01,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-09-01 04:46:01,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2023-09-01 04:46:01,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:46:01,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1935 transitions, 52081 flow. Second operand has 50 states, 50 states have (on average 151.56) internal successors, (7578), 50 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:01,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:01,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:46:01,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:59,715 INFO L130 PetriNetUnfolder]: 61468/111107 cut-off events. [2023-09-01 04:46:59,716 INFO L131 PetriNetUnfolder]: For 1048376/1048376 co-relation queries the response was YES. [2023-09-01 04:47:01,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501725 conditions, 111107 events. 61468/111107 cut-off events. For 1048376/1048376 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 864200 event pairs, 8001 based on Foata normal form. 612/111719 useless extension candidates. Maximal degree in co-relation 498530. Up to 23275 conditions per place. [2023-09-01 04:47:01,664 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 786 selfloop transitions, 2475 changer transitions 15/3278 dead transitions. [2023-09-01 04:47:01,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 3278 transitions, 81509 flow [2023-09-01 04:47:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-09-01 04:47:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-09-01 04:47:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 9490 transitions. [2023-09-01 04:47:01,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49273104880581514 [2023-09-01 04:47:01,673 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 9490 transitions. [2023-09-01 04:47:01,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 9490 transitions. [2023-09-01 04:47:01,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:47:01,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 9490 transitions. [2023-09-01 04:47:01,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 158.16666666666666) internal successors, (9490), 60 states have internal predecessors, (9490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:01,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 321.0) internal successors, (19581), 61 states have internal predecessors, (19581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:01,698 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 321.0) internal successors, (19581), 61 states have internal predecessors, (19581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:01,698 INFO L175 Difference]: Start difference. First operand has 412 places, 1935 transitions, 52081 flow. Second operand 60 states and 9490 transitions. [2023-09-01 04:47:01,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 3278 transitions, 81509 flow [2023-09-01 04:47:14,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 3278 transitions, 80947 flow, removed 48 selfloop flow, removed 16 redundant places. [2023-09-01 04:47:14,812 INFO L231 Difference]: Finished difference. Result has 475 places, 2639 transitions, 78753 flow [2023-09-01 04:47:14,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=51117, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1785, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=78753, PETRI_PLACES=475, PETRI_TRANSITIONS=2639} [2023-09-01 04:47:14,814 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 432 predicate places. [2023-09-01 04:47:14,814 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 2639 transitions, 78753 flow [2023-09-01 04:47:14,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 151.56) internal successors, (7578), 50 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:14,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:47:14,816 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:47:14,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 04:47:15,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-09-01 04:47:15,023 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:47:15,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:47:15,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1184934048, now seen corresponding path program 5 times [2023-09-01 04:47:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:47:15,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051425887] [2023-09-01 04:47:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:47:15,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:47:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:47:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:47:15,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:47:15,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051425887] [2023-09-01 04:47:15,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051425887] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:47:15,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522377230] [2023-09-01 04:47:15,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:47:15,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:47:15,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:47:15,893 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:47:15,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 04:47:17,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-09-01 04:47:17,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:47:17,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 04:47:17,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:47:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:47:17,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:47:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:47:17,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522377230] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:47:17,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:47:17,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 48 [2023-09-01 04:47:17,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394740599] [2023-09-01 04:47:17,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:47:17,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-09-01 04:47:17,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:47:17,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-09-01 04:47:17,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2023-09-01 04:47:17,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:47:17,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 2639 transitions, 78753 flow. Second operand has 50 states, 50 states have (on average 151.56) internal successors, (7578), 50 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:17,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:47:17,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:47:17,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:49:12,215 INFO L130 PetriNetUnfolder]: 89242/161105 cut-off events. [2023-09-01 04:49:12,216 INFO L131 PetriNetUnfolder]: For 1811690/1811690 co-relation queries the response was YES. [2023-09-01 04:49:14,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760568 conditions, 161105 events. 89242/161105 cut-off events. For 1811690/1811690 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 1332344 event pairs, 9775 based on Foata normal form. 394/161499 useless extension candidates. Maximal degree in co-relation 757244. Up to 33757 conditions per place. [2023-09-01 04:49:15,340 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 1028 selfloop transitions, 3598 changer transitions 21/4649 dead transitions. [2023-09-01 04:49:15,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 4649 transitions, 132394 flow [2023-09-01 04:49:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-09-01 04:49:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-09-01 04:49:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 10378 transitions. [2023-09-01 04:49:15,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898517889172095 [2023-09-01 04:49:15,351 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 10378 transitions. [2023-09-01 04:49:15,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 10378 transitions. [2023-09-01 04:49:15,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:49:15,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 10378 transitions. [2023-09-01 04:49:15,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 157.24242424242425) internal successors, (10378), 66 states have internal predecessors, (10378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:49:15,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 321.0) internal successors, (21507), 67 states have internal predecessors, (21507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:49:15,377 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 321.0) internal successors, (21507), 67 states have internal predecessors, (21507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:49:15,377 INFO L175 Difference]: Start difference. First operand has 475 places, 2639 transitions, 78753 flow. Second operand 66 states and 10378 transitions. [2023-09-01 04:49:15,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 4649 transitions, 132394 flow [2023-09-01 04:49:47,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 4649 transitions, 131334 flow, removed 167 selfloop flow, removed 8 redundant places. [2023-09-01 04:49:47,915 INFO L231 Difference]: Finished difference. Result has 551 places, 4046 transitions, 131742 flow [2023-09-01 04:49:47,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=77387, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=131742, PETRI_PLACES=551, PETRI_TRANSITIONS=4046} [2023-09-01 04:49:47,919 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 508 predicate places. [2023-09-01 04:49:47,919 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 4046 transitions, 131742 flow [2023-09-01 04:49:47,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 151.56) internal successors, (7578), 50 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:49:47,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:49:47,921 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:49:47,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 04:49:48,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:49:48,130 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:49:48,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:49:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1245887221, now seen corresponding path program 6 times [2023-09-01 04:49:48,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:49:48,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115422678] [2023-09-01 04:49:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:49:48,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:49:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:49:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 589 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:49:48,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:49:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115422678] [2023-09-01 04:49:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115422678] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:49:48,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454595242] [2023-09-01 04:49:48,980 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 04:49:48,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:49:48,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:49:48,985 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:49:49,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 04:49:51,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-09-01 04:49:51,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:49:51,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 33 conjunts are in the unsatisfiable core [2023-09-01 04:49:51,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:49:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 589 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:49:51,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:49:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 589 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:49:52,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454595242] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:49:52,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:49:52,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2023-09-01 04:49:52,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104278829] [2023-09-01 04:49:52,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:49:52,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-09-01 04:49:52,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:49:52,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-09-01 04:49:52,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1767, Unknown=0, NotChecked=0, Total=2256 [2023-09-01 04:49:52,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-09-01 04:49:52,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 4046 transitions, 131742 flow. Second operand has 48 states, 48 states have (on average 151.79166666666666) internal successors, (7286), 48 states have internal predecessors, (7286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:49:52,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:49:52,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-09-01 04:49:52,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:01,496 INFO L130 PetriNetUnfolder]: 141789/256154 cut-off events. [2023-09-01 04:55:01,496 INFO L131 PetriNetUnfolder]: For 3299798/3299798 co-relation queries the response was YES. [2023-09-01 04:55:06,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260158 conditions, 256154 events. 141789/256154 cut-off events. For 3299798/3299798 co-relation queries the response was YES. Maximal size of possible extension queue 1925. Compared 2255474 event pairs, 15501 based on Foata normal form. 688/256842 useless extension candidates. Maximal degree in co-relation 1256705. Up to 53848 conditions per place. [2023-09-01 04:55:07,374 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 855 selfloop transitions, 6330 changer transitions 18/7205 dead transitions. [2023-09-01 04:55:07,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 7205 transitions, 234207 flow [2023-09-01 04:55:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-09-01 04:55:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-09-01 04:55:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 9297 transitions. [2023-09-01 04:55:07,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908918105496594 [2023-09-01 04:55:07,381 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 9297 transitions. [2023-09-01 04:55:07,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 9297 transitions. [2023-09-01 04:55:07,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:07,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 9297 transitions. [2023-09-01 04:55:07,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 157.57627118644066) internal successors, (9297), 59 states have internal predecessors, (9297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:55:07,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 321.0) internal successors, (19260), 60 states have internal predecessors, (19260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:55:07,404 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 321.0) internal successors, (19260), 60 states have internal predecessors, (19260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:55:07,404 INFO L175 Difference]: Start difference. First operand has 551 places, 4046 transitions, 131742 flow. Second operand 59 states and 9297 transitions. [2023-09-01 04:55:07,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 7205 transitions, 234207 flow Killed by 15