./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c --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/weaver/parallel-misc-3-extended.wvr.c -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 b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 --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 07:48:45,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:48:45,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:48:45,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:48:45,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:48:45,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:48:45,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:48:45,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:48:45,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:48:45,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:48:45,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:48:45,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:48:45,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:48:45,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:48:45,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:48:45,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:48:45,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:48:45,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:48:45,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:48:45,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:48:45,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:48:45,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:48:45,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:48:45,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:48:45,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:48:45,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:48:45,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:48:45,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:48:45,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:48:45,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:48:45,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:48:45,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:48:45,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:48:45,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:48:45,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:48:45,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:48:45,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:48:45,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:48:45,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:48:45,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:48:45,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:48:45,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:48:45,156 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:48:45,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:48:45,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:48:45,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:48:45,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:48:45,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:48:45,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:48:45,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:48:45,158 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:48:45,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:48:45,158 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:48:45,158 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:48:45,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:48:45,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:48:45,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:48:45,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:48:45,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:48:45,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:48:45,159 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:48:45,159 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:48:45,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:48:45,159 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:48:45,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:48:45,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:48:45,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:48:45,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:48:45,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:48:45,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:48:45,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:48:45,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:48:45,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:48:45,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:48:45,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:48:45,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:48:45,161 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:48:45,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:48:45,161 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:48:45,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:48:45,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:48:45,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:48:45,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:48:45,501 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:48:45,501 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:48:45,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-09-01 07:48:46,660 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:48:46,877 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:48:46,878 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-09-01 07:48:46,883 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7418cb30/24ed8215ce4b4fca8a1d44b42315811c/FLAGe2c902bff [2023-09-01 07:48:46,895 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7418cb30/24ed8215ce4b4fca8a1d44b42315811c [2023-09-01 07:48:46,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:48:46,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:48:46,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:48:46,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:48:46,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:48:46,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:48:46" (1/1) ... [2023-09-01 07:48:46,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0e9b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:46, skipping insertion in model container [2023-09-01 07:48:46,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:48:46" (1/1) ... [2023-09-01 07:48:46,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:48:46,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:48:47,100 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2023-09-01 07:48:47,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:48:47,118 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:48:47,156 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2023-09-01 07:48:47,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:48:47,163 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:48:47,163 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:48:47,169 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:48:47,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47 WrapperNode [2023-09-01 07:48:47,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:48:47,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:48:47,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:48:47,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:48:47,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,229 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-09-01 07:48:47,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:48:47,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:48:47,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:48:47,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:48:47,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:48:47,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:48:47,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:48:47,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:48:47,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:48:47,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:47,338 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 07:48:47,361 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 07:48:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:48:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:48:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:48:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:48:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:48:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:48:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:48:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:48:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:48:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:48:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 07:48:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 07:48:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:48:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:48:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:48:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:48:47,382 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 07:48:47,499 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:48:47,502 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:48:47,834 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:48:47,878 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:48:47,878 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 07:48:47,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:48:47 BoogieIcfgContainer [2023-09-01 07:48:47,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:48:47,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:48:47,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:48:47,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:48:47,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:48:46" (1/3) ... [2023-09-01 07:48:47,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1460ff1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:48:47, skipping insertion in model container [2023-09-01 07:48:47,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (2/3) ... [2023-09-01 07:48:47,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1460ff1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:48:47, skipping insertion in model container [2023-09-01 07:48:47,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:48:47" (3/3) ... [2023-09-01 07:48:47,892 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2023-09-01 07:48:47,899 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:48:47,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:48:47,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-09-01 07:48:47,908 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:48:47,985 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 07:48:48,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 137 transitions, 298 flow [2023-09-01 07:48:48,068 INFO L130 PetriNetUnfolder]: 16/134 cut-off events. [2023-09-01 07:48:48,068 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:48:48,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 16/134 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 215 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-09-01 07:48:48,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 137 transitions, 298 flow [2023-09-01 07:48:48,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 116 transitions, 247 flow [2023-09-01 07:48:48,083 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:48:48,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 116 transitions, 247 flow [2023-09-01 07:48:48,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 116 transitions, 247 flow [2023-09-01 07:48:48,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 116 transitions, 247 flow [2023-09-01 07:48:48,118 INFO L130 PetriNetUnfolder]: 15/116 cut-off events. [2023-09-01 07:48:48,119 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:48:48,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 116 events. 15/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 215 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-09-01 07:48:48,123 INFO L119 LiptonReduction]: Number of co-enabled transitions 4488 [2023-09-01 07:48:52,311 INFO L134 LiptonReduction]: Checked pairs total: 4739 [2023-09-01 07:48:52,311 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-09-01 07:48:52,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:48:52,329 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;@5ddbbecf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:48:52,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-09-01 07:48:52,332 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-09-01 07:48:52,332 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:48:52,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:52,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:48:52,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:48:52,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:52,338 INFO L85 PathProgramCache]: Analyzing trace with hash 590988, now seen corresponding path program 1 times [2023-09-01 07:48:52,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:52,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458768567] [2023-09-01 07:48:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:52,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:52,541 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 07:48:52,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:52,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458768567] [2023-09-01 07:48:52,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458768567] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:52,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:48:52,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:48:52,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866675880] [2023-09-01 07:48:52,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:52,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:52,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:52,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:52,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:48:52,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2023-09-01 07:48:52,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 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 07:48:52,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:52,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2023-09-01 07:48:52,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:52,878 INFO L130 PetriNetUnfolder]: 1473/2114 cut-off events. [2023-09-01 07:48:52,879 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2023-09-01 07:48:52,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4379 conditions, 2114 events. 1473/2114 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9501 event pairs, 693 based on Foata normal form. 0/730 useless extension candidates. Maximal degree in co-relation 4104. Up to 2037 conditions per place. [2023-09-01 07:48:52,893 INFO L137 encePairwiseOnDemand]: 240/256 looper letters, 40 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2023-09-01 07:48:52,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 203 flow [2023-09-01 07:48:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-09-01 07:48:52,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908854166666667 [2023-09-01 07:48:52,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-09-01 07:48:52,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-09-01 07:48:52,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:52,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-09-01 07:48:52,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 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 07:48:52,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 07:48:52,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 07:48:52,937 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 73 flow. Second operand 3 states and 377 transitions. [2023-09-01 07:48:52,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 203 flow [2023-09-01 07:48:52,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 187 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:48:52,943 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 112 flow [2023-09-01 07:48:52,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-09-01 07:48:52,947 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-09-01 07:48:52,947 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 112 flow [2023-09-01 07:48:52,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 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 07:48:52,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:52,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:48:52,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:48:52,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:48:52,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:52,949 INFO L85 PathProgramCache]: Analyzing trace with hash 18322249, now seen corresponding path program 1 times [2023-09-01 07:48:52,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:52,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341151938] [2023-09-01 07:48:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:52,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:53,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:53,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341151938] [2023-09-01 07:48:53,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341151938] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:53,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621761023] [2023-09-01 07:48:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:53,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:53,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:53,155 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 07:48:53,172 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 07:48:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:53,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:48:53,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:53,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:53,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621761023] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:48:53,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:48:53,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-09-01 07:48:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204003874] [2023-09-01 07:48:53,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:48:53,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 07:48:53,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 07:48:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:48:53,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 256 [2023-09-01 07:48:53,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 112 flow. Second operand has 8 states, 8 states have (on average 101.5) internal successors, (812), 8 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:53,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:53,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 256 [2023-09-01 07:48:53,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:54,890 INFO L130 PetriNetUnfolder]: 4078/6181 cut-off events. [2023-09-01 07:48:54,890 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2023-09-01 07:48:54,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16421 conditions, 6181 events. 4078/6181 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 37668 event pairs, 159 based on Foata normal form. 0/3427 useless extension candidates. Maximal degree in co-relation 11196. Up to 3797 conditions per place. [2023-09-01 07:48:54,932 INFO L137 encePairwiseOnDemand]: 240/256 looper letters, 142 selfloop transitions, 56 changer transitions 0/198 dead transitions. [2023-09-01 07:48:54,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 198 transitions, 1016 flow [2023-09-01 07:48:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 07:48:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 07:48:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1450 transitions. [2023-09-01 07:48:54,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720052083333333 [2023-09-01 07:48:54,938 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1450 transitions. [2023-09-01 07:48:54,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1450 transitions. [2023-09-01 07:48:54,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:54,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1450 transitions. [2023-09-01 07:48:54,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:54,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 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 07:48:54,950 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 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 07:48:54,950 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 112 flow. Second operand 12 states and 1450 transitions. [2023-09-01 07:48:54,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 198 transitions, 1016 flow [2023-09-01 07:48:54,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 198 transitions, 1012 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:48:54,955 INFO L231 Difference]: Finished difference. Result has 52 places, 94 transitions, 673 flow [2023-09-01 07:48:54,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=673, PETRI_PLACES=52, PETRI_TRANSITIONS=94} [2023-09-01 07:48:54,956 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-09-01 07:48:54,956 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 94 transitions, 673 flow [2023-09-01 07:48:54,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 101.5) internal successors, (812), 8 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:54,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:54,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:48:54,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:55,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:55,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:48:55,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:55,165 INFO L85 PathProgramCache]: Analyzing trace with hash 18322243, now seen corresponding path program 1 times [2023-09-01 07:48:55,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:55,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351418918] [2023-09-01 07:48:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:55,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:55,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:55,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351418918] [2023-09-01 07:48:55,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351418918] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128746263] [2023-09-01 07:48:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:55,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:55,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:55,337 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 07:48:55,340 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 07:48:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:55,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:48:55,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:55,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:56,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128746263] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:48:56,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:48:56,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-09-01 07:48:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611879123] [2023-09-01 07:48:56,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:48:56,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 07:48:56,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:56,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 07:48:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:48:56,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 256 [2023-09-01 07:48:56,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 94 transitions, 673 flow. Second operand has 8 states, 8 states have (on average 101.5) internal successors, (812), 8 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:56,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:56,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 256 [2023-09-01 07:48:56,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:57,185 INFO L130 PetriNetUnfolder]: 5525/8404 cut-off events. [2023-09-01 07:48:57,185 INFO L131 PetriNetUnfolder]: For 22921/22921 co-relation queries the response was YES. [2023-09-01 07:48:57,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35753 conditions, 8404 events. 5525/8404 cut-off events. For 22921/22921 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 52541 event pairs, 137 based on Foata normal form. 844/8544 useless extension candidates. Maximal degree in co-relation 26042. Up to 5051 conditions per place. [2023-09-01 07:48:57,259 INFO L137 encePairwiseOnDemand]: 240/256 looper letters, 131 selfloop transitions, 73 changer transitions 0/204 dead transitions. [2023-09-01 07:48:57,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 204 transitions, 1757 flow [2023-09-01 07:48:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 07:48:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 07:48:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 942 transitions. [2023-09-01 07:48:57,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599609375 [2023-09-01 07:48:57,263 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 942 transitions. [2023-09-01 07:48:57,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 942 transitions. [2023-09-01 07:48:57,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:57,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 942 transitions. [2023-09-01 07:48:57,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.75) internal successors, (942), 8 states have internal predecessors, (942), 0 states have call successors, (0), 0 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 07:48:57,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 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 07:48:57,271 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 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 07:48:57,271 INFO L175 Difference]: Start difference. First operand has 52 places, 94 transitions, 673 flow. Second operand 8 states and 942 transitions. [2023-09-01 07:48:57,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 204 transitions, 1757 flow [2023-09-01 07:48:57,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 204 transitions, 1622 flow, removed 65 selfloop flow, removed 3 redundant places. [2023-09-01 07:48:57,573 INFO L231 Difference]: Finished difference. Result has 60 places, 136 transitions, 1392 flow [2023-09-01 07:48:57,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1392, PETRI_PLACES=60, PETRI_TRANSITIONS=136} [2023-09-01 07:48:57,574 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-09-01 07:48:57,574 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 136 transitions, 1392 flow [2023-09-01 07:48:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 101.5) internal successors, (812), 8 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:57,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:57,589 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 07:48:57,781 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,SelfDestructingSolverStorable2 [2023-09-01 07:48:57,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:48:57,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:57,782 INFO L85 PathProgramCache]: Analyzing trace with hash 359364977, now seen corresponding path program 1 times [2023-09-01 07:48:57,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:57,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394360845] [2023-09-01 07:48:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:57,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:57,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:57,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394360845] [2023-09-01 07:48:57,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394360845] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:57,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:48:57,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:48:57,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166019249] [2023-09-01 07:48:57,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:57,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:57,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:57,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:57,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:48:57,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 256 [2023-09-01 07:48:57,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 136 transitions, 1392 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 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 07:48:57,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:57,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 256 [2023-09-01 07:48:57,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:58,795 INFO L130 PetriNetUnfolder]: 4641/7070 cut-off events. [2023-09-01 07:48:58,796 INFO L131 PetriNetUnfolder]: For 39502/39502 co-relation queries the response was YES. [2023-09-01 07:48:58,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35489 conditions, 7070 events. 4641/7070 cut-off events. For 39502/39502 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 42715 event pairs, 2210 based on Foata normal form. 352/7412 useless extension candidates. Maximal degree in co-relation 21059. Up to 7070 conditions per place. [2023-09-01 07:48:58,858 INFO L137 encePairwiseOnDemand]: 254/256 looper letters, 128 selfloop transitions, 1 changer transitions 0/129 dead transitions. [2023-09-01 07:48:58,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 129 transitions, 1582 flow [2023-09-01 07:48:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-09-01 07:48:58,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518229166666667 [2023-09-01 07:48:58,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-09-01 07:48:58,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-09-01 07:48:58,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:58,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-09-01 07:48:58,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 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 07:48:58,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 07:48:58,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 07:48:58,864 INFO L175 Difference]: Start difference. First operand has 60 places, 136 transitions, 1392 flow. Second operand 3 states and 347 transitions. [2023-09-01 07:48:58,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 129 transitions, 1582 flow [2023-09-01 07:48:59,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 129 transitions, 1439 flow, removed 69 selfloop flow, removed 2 redundant places. [2023-09-01 07:48:59,143 INFO L231 Difference]: Finished difference. Result has 59 places, 129 transitions, 1183 flow [2023-09-01 07:48:59,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1183, PETRI_PLACES=59, PETRI_TRANSITIONS=129} [2023-09-01 07:48:59,144 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-09-01 07:48:59,145 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 129 transitions, 1183 flow [2023-09-01 07:48:59,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 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 07:48:59,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:59,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:59,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:48:59,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:48:59,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:59,147 INFO L85 PathProgramCache]: Analyzing trace with hash 362911075, now seen corresponding path program 1 times [2023-09-01 07:48:59,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:59,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637395940] [2023-09-01 07:48:59,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:59,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:59,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637395940] [2023-09-01 07:48:59,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637395940] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:59,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676611295] [2023-09-01 07:48:59,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:59,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:59,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:59,270 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 07:48:59,276 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 07:48:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:59,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:48:59,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:59,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:59,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676611295] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:59,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:48:59,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 8 [2023-09-01 07:48:59,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152276420] [2023-09-01 07:48:59,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:59,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:59,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:59,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-09-01 07:48:59,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 256 [2023-09-01 07:48:59,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 129 transitions, 1183 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 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 07:48:59,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:59,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 256 [2023-09-01 07:48:59,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:00,590 INFO L130 PetriNetUnfolder]: 4049/6176 cut-off events. [2023-09-01 07:49:00,590 INFO L131 PetriNetUnfolder]: For 21874/21874 co-relation queries the response was YES. [2023-09-01 07:49:00,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27343 conditions, 6176 events. 4049/6176 cut-off events. For 21874/21874 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 36497 event pairs, 1977 based on Foata normal form. 214/6380 useless extension candidates. Maximal degree in co-relation 27323. Up to 6176 conditions per place. [2023-09-01 07:49:00,645 INFO L137 encePairwiseOnDemand]: 254/256 looper letters, 120 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2023-09-01 07:49:00,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 121 transitions, 1347 flow [2023-09-01 07:49:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-09-01 07:49:00,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2023-09-01 07:49:00,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-09-01 07:49:00,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-09-01 07:49:00,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:00,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-09-01 07:49:00,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 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 07:49:00,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 07:49:00,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 07:49:00,651 INFO L175 Difference]: Start difference. First operand has 59 places, 129 transitions, 1183 flow. Second operand 3 states and 346 transitions. [2023-09-01 07:49:00,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 121 transitions, 1347 flow [2023-09-01 07:49:00,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 121 transitions, 1346 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:00,771 INFO L231 Difference]: Finished difference. Result has 59 places, 121 transitions, 1106 flow [2023-09-01 07:49:00,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1106, PETRI_PLACES=59, PETRI_TRANSITIONS=121} [2023-09-01 07:49:00,774 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-09-01 07:49:00,774 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 121 transitions, 1106 flow [2023-09-01 07:49:00,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 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 07:49:00,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:00,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:00,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 07:49:00,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:00,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:49:00,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:00,981 INFO L85 PathProgramCache]: Analyzing trace with hash 362911068, now seen corresponding path program 1 times [2023-09-01 07:49:00,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:00,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412343959] [2023-09-01 07:49:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:01,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:01,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412343959] [2023-09-01 07:49:01,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412343959] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:01,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060508347] [2023-09-01 07:49:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:01,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:01,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:01,068 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 07:49:01,072 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 07:49:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:01,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:49:01,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:01,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:49:01,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060508347] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:01,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:49:01,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-09-01 07:49:01,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032713222] [2023-09-01 07:49:01,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:01,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:49:01,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:49:01,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:49:01,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 256 [2023-09-01 07:49:01,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 121 transitions, 1106 flow. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 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 07:49:01,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:01,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 256 [2023-09-01 07:49:01,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:01,989 INFO L130 PetriNetUnfolder]: 2527/3830 cut-off events. [2023-09-01 07:49:01,989 INFO L131 PetriNetUnfolder]: For 20665/20665 co-relation queries the response was YES. [2023-09-01 07:49:02,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15360 conditions, 3830 events. 2527/3830 cut-off events. For 20665/20665 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 20350 event pairs, 643 based on Foata normal form. 1226/5056 useless extension candidates. Maximal degree in co-relation 15339. Up to 2462 conditions per place. [2023-09-01 07:49:02,016 INFO L137 encePairwiseOnDemand]: 246/256 looper letters, 106 selfloop transitions, 36 changer transitions 0/142 dead transitions. [2023-09-01 07:49:02,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 142 transitions, 1478 flow [2023-09-01 07:49:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:49:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:49:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 476 transitions. [2023-09-01 07:49:02,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2023-09-01 07:49:02,018 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 476 transitions. [2023-09-01 07:49:02,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 476 transitions. [2023-09-01 07:49:02,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:02,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 476 transitions. [2023-09-01 07:49:02,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 07:49:02,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 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 07:49:02,022 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 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 07:49:02,022 INFO L175 Difference]: Start difference. First operand has 59 places, 121 transitions, 1106 flow. Second operand 4 states and 476 transitions. [2023-09-01 07:49:02,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 142 transitions, 1478 flow [2023-09-01 07:49:02,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 142 transitions, 1441 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-09-01 07:49:02,115 INFO L231 Difference]: Finished difference. Result has 57 places, 117 transitions, 1203 flow [2023-09-01 07:49:02,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1203, PETRI_PLACES=57, PETRI_TRANSITIONS=117} [2023-09-01 07:49:02,116 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-09-01 07:49:02,117 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 117 transitions, 1203 flow [2023-09-01 07:49:02,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 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 07:49:02,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:02,117 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:02,127 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 07:49:02,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:02,323 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:49:02,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:02,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1744585825, now seen corresponding path program 1 times [2023-09-01 07:49:02,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:02,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119577552] [2023-09-01 07:49:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:02,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:02,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119577552] [2023-09-01 07:49:02,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119577552] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:02,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077266868] [2023-09-01 07:49:02,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:02,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:02,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:02,458 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 07:49:02,463 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 07:49:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:02,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 07:49:02,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:02,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077266868] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:03,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:03,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-09-01 07:49:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598341896] [2023-09-01 07:49:03,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:03,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 07:49:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:03,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 07:49:03,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-09-01 07:49:03,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 256 [2023-09-01 07:49:03,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 117 transitions, 1203 flow. Second operand has 14 states, 14 states have (on average 86.71428571428571) internal successors, (1214), 14 states have internal predecessors, (1214), 0 states have call successors, (0), 0 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 07:49:03,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:03,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 256 [2023-09-01 07:49:03,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:04,779 INFO L130 PetriNetUnfolder]: 5912/8803 cut-off events. [2023-09-01 07:49:04,779 INFO L131 PetriNetUnfolder]: For 38729/38729 co-relation queries the response was YES. [2023-09-01 07:49:04,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38769 conditions, 8803 events. 5912/8803 cut-off events. For 38729/38729 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 51980 event pairs, 307 based on Foata normal form. 330/9133 useless extension candidates. Maximal degree in co-relation 38746. Up to 3357 conditions per place. [2023-09-01 07:49:04,853 INFO L137 encePairwiseOnDemand]: 244/256 looper letters, 191 selfloop transitions, 238 changer transitions 0/429 dead transitions. [2023-09-01 07:49:04,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 429 transitions, 4725 flow [2023-09-01 07:49:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 07:49:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 07:49:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1397 transitions. [2023-09-01 07:49:04,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38978794642857145 [2023-09-01 07:49:04,858 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1397 transitions. [2023-09-01 07:49:04,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1397 transitions. [2023-09-01 07:49:04,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:04,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1397 transitions. [2023-09-01 07:49:04,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 99.78571428571429) internal successors, (1397), 14 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:04,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 256.0) internal successors, (3840), 15 states have internal predecessors, (3840), 0 states have call successors, (0), 0 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 07:49:04,869 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 256.0) internal successors, (3840), 15 states have internal predecessors, (3840), 0 states have call successors, (0), 0 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 07:49:04,869 INFO L175 Difference]: Start difference. First operand has 57 places, 117 transitions, 1203 flow. Second operand 14 states and 1397 transitions. [2023-09-01 07:49:04,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 429 transitions, 4725 flow [2023-09-01 07:49:05,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 429 transitions, 4724 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:05,014 INFO L231 Difference]: Finished difference. Result has 81 places, 305 transitions, 4484 flow [2023-09-01 07:49:05,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4484, PETRI_PLACES=81, PETRI_TRANSITIONS=305} [2023-09-01 07:49:05,015 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2023-09-01 07:49:05,016 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 305 transitions, 4484 flow [2023-09-01 07:49:05,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 86.71428571428571) internal successors, (1214), 14 states have internal predecessors, (1214), 0 states have call successors, (0), 0 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 07:49:05,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:05,020 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:05,028 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 07:49:05,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:05,226 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:49:05,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:05,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1744585870, now seen corresponding path program 1 times [2023-09-01 07:49:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:05,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107178383] [2023-09-01 07:49:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107178383] [2023-09-01 07:49:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107178383] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:05,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780208261] [2023-09-01 07:49:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:05,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:05,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:05,365 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 07:49:05,368 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 07:49:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:05,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 07:49:05,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:05,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780208261] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:06,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:06,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-09-01 07:49:06,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358053166] [2023-09-01 07:49:06,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:06,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 07:49:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 07:49:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-09-01 07:49:06,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 256 [2023-09-01 07:49:06,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 305 transitions, 4484 flow. Second operand has 14 states, 14 states have (on average 90.71428571428571) internal successors, (1270), 14 states have internal predecessors, (1270), 0 states have call successors, (0), 0 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 07:49:06,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:06,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 256 [2023-09-01 07:49:06,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:09,008 INFO L130 PetriNetUnfolder]: 10117/14812 cut-off events. [2023-09-01 07:49:09,008 INFO L131 PetriNetUnfolder]: For 154388/154388 co-relation queries the response was YES. [2023-09-01 07:49:09,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88293 conditions, 14812 events. 10117/14812 cut-off events. For 154388/154388 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 90934 event pairs, 667 based on Foata normal form. 546/15358 useless extension candidates. Maximal degree in co-relation 88257. Up to 6107 conditions per place. [2023-09-01 07:49:09,173 INFO L137 encePairwiseOnDemand]: 245/256 looper letters, 325 selfloop transitions, 475 changer transitions 0/800 dead transitions. [2023-09-01 07:49:09,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 800 transitions, 12243 flow [2023-09-01 07:49:09,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 07:49:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 07:49:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1761 transitions. [2023-09-01 07:49:09,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046415441176471 [2023-09-01 07:49:09,180 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1761 transitions. [2023-09-01 07:49:09,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1761 transitions. [2023-09-01 07:49:09,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:09,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1761 transitions. [2023-09-01 07:49:09,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 103.58823529411765) internal successors, (1761), 17 states have internal predecessors, (1761), 0 states have call successors, (0), 0 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 07:49:09,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 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 07:49:09,193 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 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 07:49:09,193 INFO L175 Difference]: Start difference. First operand has 81 places, 305 transitions, 4484 flow. Second operand 17 states and 1761 transitions. [2023-09-01 07:49:09,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 800 transitions, 12243 flow [2023-09-01 07:49:10,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 800 transitions, 11494 flow, removed 372 selfloop flow, removed 2 redundant places. [2023-09-01 07:49:10,544 INFO L231 Difference]: Finished difference. Result has 109 places, 615 transitions, 10990 flow [2023-09-01 07:49:10,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10990, PETRI_PLACES=109, PETRI_TRANSITIONS=615} [2023-09-01 07:49:10,545 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 73 predicate places. [2023-09-01 07:49:10,546 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 615 transitions, 10990 flow [2023-09-01 07:49:10,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 90.71428571428571) internal successors, (1270), 14 states have internal predecessors, (1270), 0 states have call successors, (0), 0 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 07:49:10,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:10,547 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:10,552 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 07:49:10,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:10,748 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:49:10,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:10,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1744556073, now seen corresponding path program 2 times [2023-09-01 07:49:10,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:10,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715283322] [2023-09-01 07:49:10,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:10,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:10,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:10,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715283322] [2023-09-01 07:49:10,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715283322] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:10,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879172701] [2023-09-01 07:49:10,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:49:10,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:10,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:10,865 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 07:49:10,882 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 07:49:10,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:49:10,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:49:10,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 07:49:10,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:11,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:11,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879172701] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:11,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:11,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-09-01 07:49:11,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371861942] [2023-09-01 07:49:11,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:11,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 07:49:11,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 07:49:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2023-09-01 07:49:11,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 256 [2023-09-01 07:49:11,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 615 transitions, 10990 flow. Second operand has 14 states, 14 states have (on average 88.71428571428571) internal successors, (1242), 14 states have internal predecessors, (1242), 0 states have call successors, (0), 0 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 07:49:11,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:11,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 256 [2023-09-01 07:49:11,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:17,294 INFO L130 PetriNetUnfolder]: 19185/27834 cut-off events. [2023-09-01 07:49:17,294 INFO L131 PetriNetUnfolder]: For 486411/486411 co-relation queries the response was YES. [2023-09-01 07:49:17,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198301 conditions, 27834 events. 19185/27834 cut-off events. For 486411/486411 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 181717 event pairs, 993 based on Foata normal form. 1040/28874 useless extension candidates. Maximal degree in co-relation 198251. Up to 9337 conditions per place. [2023-09-01 07:49:17,671 INFO L137 encePairwiseOnDemand]: 244/256 looper letters, 511 selfloop transitions, 1354 changer transitions 0/1865 dead transitions. [2023-09-01 07:49:17,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 1865 transitions, 35289 flow [2023-09-01 07:49:17,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 07:49:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 07:49:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2050 transitions. [2023-09-01 07:49:17,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.400390625 [2023-09-01 07:49:17,758 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2050 transitions. [2023-09-01 07:49:17,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2050 transitions. [2023-09-01 07:49:17,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:17,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2050 transitions. [2023-09-01 07:49:17,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 102.5) internal successors, (2050), 20 states have internal predecessors, (2050), 0 states have call successors, (0), 0 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 07:49:17,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 256.0) internal successors, (5376), 21 states have internal predecessors, (5376), 0 states have call successors, (0), 0 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 07:49:17,801 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 256.0) internal successors, (5376), 21 states have internal predecessors, (5376), 0 states have call successors, (0), 0 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 07:49:17,801 INFO L175 Difference]: Start difference. First operand has 109 places, 615 transitions, 10990 flow. Second operand 20 states and 2050 transitions. [2023-09-01 07:49:17,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 1865 transitions, 35289 flow [2023-09-01 07:49:24,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 1865 transitions, 33306 flow, removed 974 selfloop flow, removed 6 redundant places. [2023-09-01 07:49:24,419 INFO L231 Difference]: Finished difference. Result has 138 places, 1673 transitions, 34345 flow [2023-09-01 07:49:24,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=10137, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=474, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=34345, PETRI_PLACES=138, PETRI_TRANSITIONS=1673} [2023-09-01 07:49:24,420 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 102 predicate places. [2023-09-01 07:49:24,420 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 1673 transitions, 34345 flow [2023-09-01 07:49:24,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.71428571428571) internal successors, (1242), 14 states have internal predecessors, (1242), 0 states have call successors, (0), 0 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 07:49:24,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:24,421 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-09-01 07:49:24,428 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 07:49:24,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:24,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:49:24,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1752414803, now seen corresponding path program 1 times [2023-09-01 07:49:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828569729] [2023-09-01 07:49:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:24,868 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 07:49:24,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:24,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828569729] [2023-09-01 07:49:24,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828569729] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:24,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896667423] [2023-09-01 07:49:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:24,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:24,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:24,870 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 07:49:24,873 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 07:49:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:24,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 07:49:24,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:25,096 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 07:49:25,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:25,531 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 07:49:25,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896667423] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:25,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:25,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-09-01 07:49:25,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498575209] [2023-09-01 07:49:25,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:25,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 07:49:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 07:49:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-09-01 07:49:25,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 256 [2023-09-01 07:49:25,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 1673 transitions, 34345 flow. Second operand has 15 states, 15 states have (on average 86.73333333333333) internal successors, (1301), 15 states have internal predecessors, (1301), 0 states have call successors, (0), 0 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 07:49:25,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:25,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 256 [2023-09-01 07:49:25,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:43,128 INFO L130 PetriNetUnfolder]: 35085/50482 cut-off events. [2023-09-01 07:49:43,128 INFO L131 PetriNetUnfolder]: For 1191000/1191000 co-relation queries the response was YES. [2023-09-01 07:49:43,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420055 conditions, 50482 events. 35085/50482 cut-off events. For 1191000/1191000 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 348419 event pairs, 1337 based on Foata normal form. 3856/54338 useless extension candidates. Maximal degree in co-relation 419991. Up to 12459 conditions per place. [2023-09-01 07:49:44,106 INFO L137 encePairwiseOnDemand]: 244/256 looper letters, 1624 selfloop transitions, 3060 changer transitions 1/4685 dead transitions. [2023-09-01 07:49:44,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 4685 transitions, 102161 flow [2023-09-01 07:49:44,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-09-01 07:49:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-09-01 07:49:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3629 transitions. [2023-09-01 07:49:44,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38312922297297297 [2023-09-01 07:49:44,116 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3629 transitions. [2023-09-01 07:49:44,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3629 transitions. [2023-09-01 07:49:44,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:44,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3629 transitions. [2023-09-01 07:49:44,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 98.08108108108108) internal successors, (3629), 37 states have internal predecessors, (3629), 0 states have call successors, (0), 0 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 07:49:44,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 256.0) internal successors, (9728), 38 states have internal predecessors, (9728), 0 states have call successors, (0), 0 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 07:49:44,143 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 256.0) internal successors, (9728), 38 states have internal predecessors, (9728), 0 states have call successors, (0), 0 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 07:49:44,143 INFO L175 Difference]: Start difference. First operand has 138 places, 1673 transitions, 34345 flow. Second operand 37 states and 3629 transitions. [2023-09-01 07:49:44,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 4685 transitions, 102161 flow [2023-09-01 07:50:38,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 4685 transitions, 96783 flow, removed 2681 selfloop flow, removed 3 redundant places. [2023-09-01 07:50:38,161 INFO L231 Difference]: Finished difference. Result has 204 places, 3877 transitions, 91854 flow [2023-09-01 07:50:38,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=30812, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=91854, PETRI_PLACES=204, PETRI_TRANSITIONS=3877} [2023-09-01 07:50:38,162 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 168 predicate places. [2023-09-01 07:50:38,163 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 3877 transitions, 91854 flow [2023-09-01 07:50:38,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 86.73333333333333) internal successors, (1301), 15 states have internal predecessors, (1301), 0 states have call successors, (0), 0 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 07:50:38,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:50:38,163 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:50:38,169 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 07:50:38,364 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,SelfDestructingSolverStorable9 [2023-09-01 07:50:38,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:50:38,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:50:38,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1744556995, now seen corresponding path program 2 times [2023-09-01 07:50:38,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:50:38,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140937430] [2023-09-01 07:50:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:50:38,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:50:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:50:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:50:38,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:50:38,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140937430] [2023-09-01 07:50:38,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140937430] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:50:38,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481856340] [2023-09-01 07:50:38,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:50:38,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:50:38,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:50:38,531 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 07:50:38,537 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 07:50:38,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:50:38,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:50:38,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 07:50:38,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:50:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:50:38,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:50:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:50:39,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481856340] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:50:39,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:50:39,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 10 [2023-09-01 07:50:39,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352118178] [2023-09-01 07:50:39,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:50:39,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 07:50:39,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:50:39,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 07:50:39,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-09-01 07:50:39,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 256 [2023-09-01 07:50:39,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 3877 transitions, 91854 flow. Second operand has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 07:50:39,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:50:39,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 256 [2023-09-01 07:50:39,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:51:45,729 INFO L130 PetriNetUnfolder]: 66010/95075 cut-off events. [2023-09-01 07:51:45,729 INFO L131 PetriNetUnfolder]: For 3209591/3209591 co-relation queries the response was YES. [2023-09-01 07:51:47,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925091 conditions, 95075 events. 66010/95075 cut-off events. For 3209591/3209591 co-relation queries the response was YES. Maximal size of possible extension queue 5157. Compared 714909 event pairs, 3472 based on Foata normal form. 3522/98597 useless extension candidates. Maximal degree in co-relation 924995. Up to 18257 conditions per place. [2023-09-01 07:51:48,530 INFO L137 encePairwiseOnDemand]: 244/256 looper letters, 3808 selfloop transitions, 5461 changer transitions 0/9269 dead transitions. [2023-09-01 07:51:48,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 9269 transitions, 234371 flow [2023-09-01 07:51:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-01 07:51:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-09-01 07:51:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2081 transitions. [2023-09-01 07:51:48,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38709077380952384 [2023-09-01 07:51:48,535 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2081 transitions. [2023-09-01 07:51:48,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2081 transitions. [2023-09-01 07:51:48,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:51:48,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2081 transitions. [2023-09-01 07:51:48,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 99.0952380952381) internal successors, (2081), 21 states have internal predecessors, (2081), 0 states have call successors, (0), 0 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 07:51:48,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 256.0) internal successors, (5632), 22 states have internal predecessors, (5632), 0 states have call successors, (0), 0 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 07:51:48,547 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 256.0) internal successors, (5632), 22 states have internal predecessors, (5632), 0 states have call successors, (0), 0 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 07:51:48,547 INFO L175 Difference]: Start difference. First operand has 204 places, 3877 transitions, 91854 flow. Second operand 21 states and 2081 transitions. [2023-09-01 07:51:48,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 9269 transitions, 234371 flow [2023-09-01 07:56:41,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 9269 transitions, 229882 flow, removed 2237 selfloop flow, removed 3 redundant places. [2023-09-01 07:56:41,567 INFO L231 Difference]: Finished difference. Result has 240 places, 7773 transitions, 206399 flow [2023-09-01 07:56:41,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=87448, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2024, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1022, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=206399, PETRI_PLACES=240, PETRI_TRANSITIONS=7773} [2023-09-01 07:56:41,573 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 204 predicate places. [2023-09-01 07:56:41,573 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 7773 transitions, 206399 flow [2023-09-01 07:56:41,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 07:56:41,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:56:41,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:56:41,589 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 07:56:41,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:56:41,787 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-09-01 07:56:41,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:56:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1732156840, now seen corresponding path program 1 times [2023-09-01 07:56:41,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:56:41,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385775076] [2023-09-01 07:56:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:41,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:56:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:56:41,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:56:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385775076] [2023-09-01 07:56:41,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385775076] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:56:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826634969] [2023-09-01 07:56:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:41,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:56:41,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:56:41,844 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 07:56:41,849 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 07:56:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:41,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:56:41,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:56:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:56:42,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:56:42,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826634969] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:56:42,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:56:42,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-09-01 07:56:42,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796784870] [2023-09-01 07:56:42,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:56:42,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:56:42,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:56:42,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:56:42,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:56:42,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 256 [2023-09-01 07:56:42,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 7773 transitions, 206399 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 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 07:56:42,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:56:42,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 256 [2023-09-01 07:56:42,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:59:27,774 INFO L130 PetriNetUnfolder]: 59195/85582 cut-off events. [2023-09-01 07:59:27,774 INFO L131 PetriNetUnfolder]: For 3771489/3771489 co-relation queries the response was YES. [2023-09-01 07:59:30,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933236 conditions, 85582 events. 59195/85582 cut-off events. For 3771489/3771489 co-relation queries the response was YES. Maximal size of possible extension queue 4474. Compared 635092 event pairs, 5468 based on Foata normal form. 4500/90082 useless extension candidates. Maximal degree in co-relation 933121. Up to 68748 conditions per place. [2023-09-01 07:59:30,664 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 5497 selfloop transitions, 1506 changer transitions 124/7127 dead transitions. [2023-09-01 07:59:30,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 7127 transitions, 203703 flow [2023-09-01 07:59:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:59:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:59:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-09-01 07:59:30,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45703125 [2023-09-01 07:59:30,666 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-09-01 07:59:30,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-09-01 07:59:30,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:59:30,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-09-01 07:59:30,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 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 07:59:30,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 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 07:59:30,669 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 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 07:59:30,669 INFO L175 Difference]: Start difference. First operand has 240 places, 7773 transitions, 206399 flow. Second operand 4 states and 468 transitions. [2023-09-01 07:59:30,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 7127 transitions, 203703 flow Killed by 15