./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-parallel-sum-equiv.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 d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:12:19,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:12:19,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:12:20,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:12:20,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:12:20,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:12:20,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:12:20,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:12:20,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:12:20,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:12:20,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:12:20,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:12:20,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:12:20,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:12:20,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:12:20,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:12:20,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:12:20,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:12:20,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:12:20,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:12:20,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:12:20,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:12:20,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:12:20,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:12:20,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:12:20,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:12:20,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:12:20,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:12:20,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:12:20,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:12:20,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:12:20,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:12:20,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:12:20,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:12:20,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:12:20,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:12:20,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:12:20,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:12:20,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:12:20,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:12:20,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:12:20,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:12:20,138 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:12:20,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:12:20,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:12:20,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:12:20,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:12:20,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:12:20,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:12:20,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:12:20,140 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:12:20,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:12:20,140 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:12:20,140 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:12:20,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:12:20,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:12:20,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:12:20,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:12:20,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:12:20,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:12:20,141 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:12:20,141 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:12:20,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:12:20,142 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:12:20,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:12:20,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:12:20,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:12:20,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:12:20,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:12:20,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:12:20,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:12:20,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:12:20,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:12:20,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:12:20,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:12:20,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:12:20,143 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:12:20,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:12:20,143 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:12:20,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:12:20,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:12:20,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:12:20,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:12:20,428 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:12:20,428 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:12:20,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-08-30 15:12:21,566 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:12:21,753 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:12:21,754 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-08-30 15:12:21,759 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7a7ba17/01456c9340c5427387de963e7e01a606/FLAG5644c6a13 [2023-08-30 15:12:21,769 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7a7ba17/01456c9340c5427387de963e7e01a606 [2023-08-30 15:12:21,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:12:21,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:12:21,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:12:21,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:12:21,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:12:21,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:21,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7350fde3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21, skipping insertion in model container [2023-08-30 15:12:21,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:21,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:12:21,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:12:21,947 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-parallel-sum-equiv.wvr.c[3770,3783] [2023-08-30 15:12:21,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:12:21,961 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:12:21,982 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-parallel-sum-equiv.wvr.c[3770,3783] [2023-08-30 15:12:21,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:12:21,993 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:12:21,994 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:12:21,999 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:12:21,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21 WrapperNode [2023-08-30 15:12:21,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:12:22,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:12:22,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:12:22,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:12:22,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,046 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 309 [2023-08-30 15:12:22,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:12:22,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:12:22,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:12:22,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:12:22,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,109 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:12:22,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:12:22,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:12:22,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:12:22,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (1/1) ... [2023-08-30 15:12:22,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:12:22,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:12:22,174 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) [2023-08-30 15:12:22,184 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 [2023-08-30 15:12:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:12:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:12:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:12:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:12:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:12:22,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:12:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:12:22,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:12:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:12:22,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:12:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:12:22,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:12:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:12:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:12:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:12:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:12:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:12:22,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:12:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:12:22,209 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:12:22,296 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:12:22,297 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:12:22,753 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:12:23,122 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:12:23,122 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:12:23,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:12:23 BoogieIcfgContainer [2023-08-30 15:12:23,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:12:23,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:12:23,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:12:23,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:12:23,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:12:21" (1/3) ... [2023-08-30 15:12:23,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728d8192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:12:23, skipping insertion in model container [2023-08-30 15:12:23,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:12:21" (2/3) ... [2023-08-30 15:12:23,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728d8192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:12:23, skipping insertion in model container [2023-08-30 15:12:23,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:12:23" (3/3) ... [2023-08-30 15:12:23,132 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-08-30 15:12:23,139 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:12:23,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:12:23,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-08-30 15:12:23,147 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:12:23,306 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-30 15:12:23,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 236 transitions, 516 flow [2023-08-30 15:12:23,407 INFO L130 PetriNetUnfolder]: 14/221 cut-off events. [2023-08-30 15:12:23,408 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:12:23,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 221 events. 14/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 322 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 188. Up to 3 conditions per place. [2023-08-30 15:12:23,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 236 transitions, 516 flow [2023-08-30 15:12:23,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 205 transitions, 437 flow [2023-08-30 15:12:23,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:12:23,442 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 205 transitions, 437 flow [2023-08-30 15:12:23,444 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 205 transitions, 437 flow [2023-08-30 15:12:23,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 205 transitions, 437 flow [2023-08-30 15:12:23,487 INFO L130 PetriNetUnfolder]: 13/205 cut-off events. [2023-08-30 15:12:23,488 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:12:23,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 205 events. 13/205 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 322 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 188. Up to 3 conditions per place. [2023-08-30 15:12:23,492 INFO L119 LiptonReduction]: Number of co-enabled transitions 5456 [2023-08-30 15:12:31,808 INFO L134 LiptonReduction]: Checked pairs total: 22240 [2023-08-30 15:12:31,808 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 15:12:31,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:12:31,825 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;@62f63717, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:12:31,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-08-30 15:12:31,826 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 15:12:31,826 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:12:31,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:12:31,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 15:12:31,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:12:31,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:12:31,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1306, now seen corresponding path program 1 times [2023-08-30 15:12:31,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:12:31,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677425289] [2023-08-30 15:12:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:12:31,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:12:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:12:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:12:31,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:12:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677425289] [2023-08-30 15:12:31,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677425289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:12:31,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:12:31,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 15:12:31,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549704899] [2023-08-30 15:12:31,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:12:31,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 15:12:31,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:12:31,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 15:12:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 15:12:31,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 429 [2023-08-30 15:12:31,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:31,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:12:31,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 429 [2023-08-30 15:12:31,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:12:34,250 INFO L130 PetriNetUnfolder]: 11217/15499 cut-off events. [2023-08-30 15:12:34,250 INFO L131 PetriNetUnfolder]: For 802/802 co-relation queries the response was YES. [2023-08-30 15:12:34,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31801 conditions, 15499 events. 11217/15499 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 83743 event pairs, 9848 based on Foata normal form. 0/6999 useless extension candidates. Maximal degree in co-relation 31700. Up to 15100 conditions per place. [2023-08-30 15:12:34,363 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 48 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2023-08-30 15:12:34,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 237 flow [2023-08-30 15:12:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 15:12:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 15:12:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 416 transitions. [2023-08-30 15:12:34,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-08-30 15:12:34,382 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 416 transitions. [2023-08-30 15:12:34,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 416 transitions. [2023-08-30 15:12:34,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:12:34,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 416 transitions. [2023-08-30 15:12:34,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 208.0) internal successors, (416), 2 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:34,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:34,396 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:34,398 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 157 flow. Second operand 2 states and 416 transitions. [2023-08-30 15:12:34,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 237 flow [2023-08-30 15:12:34,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 220 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:12:34,553 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 124 flow [2023-08-30 15:12:34,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-08-30 15:12:34,558 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2023-08-30 15:12:34,559 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 124 flow [2023-08-30 15:12:34,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:34,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:12:34,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:12:34,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:12:34,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:12:34,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:12:34,568 INFO L85 PathProgramCache]: Analyzing trace with hash 41847, now seen corresponding path program 1 times [2023-08-30 15:12:34,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:12:34,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282291976] [2023-08-30 15:12:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:12:34,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:12:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:12:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:12:34,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:12:34,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282291976] [2023-08-30 15:12:34,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282291976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:12:34,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:12:34,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:12:34,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445784234] [2023-08-30 15:12:34,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:12:34,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:12:34,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:12:34,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:12:34,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:12:34,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 429 [2023-08-30 15:12:34,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:34,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:12:34,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 429 [2023-08-30 15:12:34,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:12:38,086 INFO L130 PetriNetUnfolder]: 22433/30995 cut-off events. [2023-08-30 15:12:38,086 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 15:12:38,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62367 conditions, 30995 events. 22433/30995 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1791. Compared 182088 event pairs, 19696 based on Foata normal form. 0/14077 useless extension candidates. Maximal degree in co-relation 62364. Up to 15100 conditions per place. [2023-08-30 15:12:38,225 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 91 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-30 15:12:38,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 102 transitions, 410 flow [2023-08-30 15:12:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:12:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:12:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-30 15:12:38,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864024864024864 [2023-08-30 15:12:38,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-30 15:12:38,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-30 15:12:38,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:12:38,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-30 15:12:38,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:38,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:38,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:38,237 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 124 flow. Second operand 3 states and 626 transitions. [2023-08-30 15:12:38,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 102 transitions, 410 flow [2023-08-30 15:12:38,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 102 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:12:38,240 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 138 flow [2023-08-30 15:12:38,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-08-30 15:12:38,241 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-08-30 15:12:38,241 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 138 flow [2023-08-30 15:12:38,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:38,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:12:38,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:12:38,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:12:38,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:12:38,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:12:38,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1299021, now seen corresponding path program 1 times [2023-08-30 15:12:38,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:12:38,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589128682] [2023-08-30 15:12:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:12:38,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:12:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:12:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:12:38,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:12:38,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589128682] [2023-08-30 15:12:38,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589128682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:12:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615006495] [2023-08-30 15:12:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:12:38,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:12:38,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:12:38,382 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) [2023-08-30 15:12:38,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:12:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:12:38,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:12:38,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:12:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:12:38,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:12:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:12:38,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615006495] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:12:38,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:12:38,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:12:38,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569790720] [2023-08-30 15:12:38,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:12:38,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:12:38,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:12:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:12:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:12:38,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 429 [2023-08-30 15:12:38,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:38,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:12:38,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 429 [2023-08-30 15:12:38,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:12:45,645 INFO L130 PetriNetUnfolder]: 56084/77486 cut-off events. [2023-08-30 15:12:45,645 INFO L131 PetriNetUnfolder]: For 500/500 co-relation queries the response was YES. [2023-08-30 15:12:45,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155924 conditions, 77486 events. 56084/77486 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 3854. Compared 507417 event pairs, 49240 based on Foata normal form. 0/35236 useless extension candidates. Maximal degree in co-relation 155919. Up to 15099 conditions per place. [2023-08-30 15:12:45,985 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 222 selfloop transitions, 9 changer transitions 0/240 dead transitions. [2023-08-30 15:12:45,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 240 transitions, 1016 flow [2023-08-30 15:12:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:12:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:12:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1473 transitions. [2023-08-30 15:12:45,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905094905094905 [2023-08-30 15:12:45,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1473 transitions. [2023-08-30 15:12:45,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1473 transitions. [2023-08-30 15:12:45,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:12:45,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1473 transitions. [2023-08-30 15:12:45,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 210.42857142857142) internal successors, (1473), 7 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:45,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:46,000 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:46,001 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 138 flow. Second operand 7 states and 1473 transitions. [2023-08-30 15:12:46,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 240 transitions, 1016 flow [2023-08-30 15:12:46,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 240 transitions, 1014 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:12:46,007 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 195 flow [2023-08-30 15:12:46,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-08-30 15:12:46,008 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-30 15:12:46,009 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 195 flow [2023-08-30 15:12:46,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:46,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:12:46,010 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:12:46,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:12:46,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:12:46,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:12:46,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:12:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash 40271416, now seen corresponding path program 1 times [2023-08-30 15:12:46,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:12:46,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189716551] [2023-08-30 15:12:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:12:46,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:12:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:12:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:12:46,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:12:46,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189716551] [2023-08-30 15:12:46,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189716551] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:12:46,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759111476] [2023-08-30 15:12:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:12:46,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:12:46,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:12:46,333 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) [2023-08-30 15:12:46,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:12:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:12:46,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:12:46,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:12:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:12:46,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:12:46,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759111476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:12:46,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:12:46,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:12:46,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500804905] [2023-08-30 15:12:46,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:12:46,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:12:46,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:12:46,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:12:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:12:46,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 429 [2023-08-30 15:12:46,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:46,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:12:46,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 429 [2023-08-30 15:12:46,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:12:53,359 INFO L130 PetriNetUnfolder]: 56081/77482 cut-off events. [2023-08-30 15:12:53,360 INFO L131 PetriNetUnfolder]: For 501/501 co-relation queries the response was YES. [2023-08-30 15:12:53,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155926 conditions, 77482 events. 56081/77482 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 3512. Compared 505618 event pairs, 49240 based on Foata normal form. 2/35319 useless extension candidates. Maximal degree in co-relation 155918. Up to 45290 conditions per place. [2023-08-30 15:12:53,755 INFO L137 encePairwiseOnDemand]: 426/429 looper letters, 136 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2023-08-30 15:12:53,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 148 transitions, 642 flow [2023-08-30 15:12:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:12:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:12:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1024 transitions. [2023-08-30 15:12:53,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773892773892774 [2023-08-30 15:12:53,760 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1024 transitions. [2023-08-30 15:12:53,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1024 transitions. [2023-08-30 15:12:53,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:12:53,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1024 transitions. [2023-08-30 15:12:53,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.8) internal successors, (1024), 5 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) [2023-08-30 15:12:53,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:53,773 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:53,773 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 195 flow. Second operand 5 states and 1024 transitions. [2023-08-30 15:12:53,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 148 transitions, 642 flow [2023-08-30 15:12:53,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 148 transitions, 634 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:12:53,777 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 166 flow [2023-08-30 15:12:53,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-30 15:12:53,778 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-08-30 15:12:53,778 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 166 flow [2023-08-30 15:12:53,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:53,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:12:53,779 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:12:53,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 15:12:53,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 15:12:53,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:12:53,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:12:53,985 INFO L85 PathProgramCache]: Analyzing trace with hash 46180599, now seen corresponding path program 2 times [2023-08-30 15:12:53,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:12:53,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884740992] [2023-08-30 15:12:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:12:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:12:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:12:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:12:54,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:12:54,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884740992] [2023-08-30 15:12:54,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884740992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:12:54,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474793516] [2023-08-30 15:12:54,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:12:54,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:12:54,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:12:54,093 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) [2023-08-30 15:12:54,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:12:54,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:12:54,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:12:54,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 15:12:54,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:12:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:12:54,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:12:54,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474793516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:12:54,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:12:54,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:12:54,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994525979] [2023-08-30 15:12:54,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:12:54,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:12:54,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:12:54,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:12:54,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:12:54,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-08-30 15:12:54,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:12:54,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:12:54,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-08-30 15:12:54,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:13:00,969 INFO L130 PetriNetUnfolder]: 56081/77481 cut-off events. [2023-08-30 15:13:00,969 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2023-08-30 15:13:01,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155920 conditions, 77481 events. 56081/77481 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 3858. Compared 507766 event pairs, 49240 based on Foata normal form. 1/34997 useless extension candidates. Maximal degree in co-relation 155911. Up to 75481 conditions per place. [2023-08-30 15:13:01,290 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 49 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 15:13:01,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 256 flow [2023-08-30 15:13:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:13:01,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:13:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-08-30 15:13:01,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45143745143745145 [2023-08-30 15:13:01,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-08-30 15:13:01,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-08-30 15:13:01,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:13:01,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-08-30 15:13:01,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:01,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:01,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:01,299 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 166 flow. Second operand 3 states and 581 transitions. [2023-08-30 15:13:01,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 256 flow [2023-08-30 15:13:01,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 241 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-30 15:13:01,301 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 143 flow [2023-08-30 15:13:01,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-08-30 15:13:01,302 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-08-30 15:13:01,302 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 143 flow [2023-08-30 15:13:01,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:01,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:13:01,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:13:01,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:13:01,507 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 [2023-08-30 15:13:01,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:13:01,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:13:01,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1381981626, now seen corresponding path program 1 times [2023-08-30 15:13:01,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:13:01,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063245673] [2023-08-30 15:13:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:01,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:13:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:01,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:13:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063245673] [2023-08-30 15:13:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063245673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:13:01,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:13:01,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:13:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142579956] [2023-08-30 15:13:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:13:01,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:13:01,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:13:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:13:01,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:13:01,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-08-30 15:13:01,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:01,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:13:01,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-08-30 15:13:01,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:13:08,350 INFO L130 PetriNetUnfolder]: 60591/82691 cut-off events. [2023-08-30 15:13:08,350 INFO L131 PetriNetUnfolder]: For 1000/1000 co-relation queries the response was YES. [2023-08-30 15:13:08,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167680 conditions, 82691 events. 60591/82691 cut-off events. For 1000/1000 co-relation queries the response was YES. Maximal size of possible extension queue 4149. Compared 533558 event pairs, 42805 based on Foata normal form. 0/38036 useless extension candidates. Maximal degree in co-relation 167675. Up to 76237 conditions per place. [2023-08-30 15:13:08,657 INFO L137 encePairwiseOnDemand]: 422/429 looper letters, 73 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-08-30 15:13:08,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 355 flow [2023-08-30 15:13:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:13:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:13:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-30 15:13:08,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473970473970474 [2023-08-30 15:13:08,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-30 15:13:08,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-30 15:13:08,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:13:08,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-30 15:13:08,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:08,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:08,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:08,664 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 143 flow. Second operand 3 states and 610 transitions. [2023-08-30 15:13:08,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 355 flow [2023-08-30 15:13:08,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:13:08,666 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 167 flow [2023-08-30 15:13:08,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-30 15:13:08,667 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-30 15:13:08,667 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 167 flow [2023-08-30 15:13:08,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:08,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:13:08,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:13:08,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:13:08,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:13:08,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:13:08,668 INFO L85 PathProgramCache]: Analyzing trace with hash -726265181, now seen corresponding path program 1 times [2023-08-30 15:13:08,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:13:08,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244725109] [2023-08-30 15:13:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:08,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:13:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:08,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:13:08,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244725109] [2023-08-30 15:13:08,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244725109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:13:08,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:13:08,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:13:08,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012312328] [2023-08-30 15:13:08,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:13:08,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:13:08,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:13:08,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:13:08,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:13:08,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 429 [2023-08-30 15:13:08,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:08,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:13:08,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 429 [2023-08-30 15:13:08,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:13:14,933 INFO L130 PetriNetUnfolder]: 51998/72364 cut-off events. [2023-08-30 15:13:14,933 INFO L131 PetriNetUnfolder]: For 4443/4443 co-relation queries the response was YES. [2023-08-30 15:13:15,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157651 conditions, 72364 events. 51998/72364 cut-off events. For 4443/4443 co-relation queries the response was YES. Maximal size of possible extension queue 3742. Compared 479360 event pairs, 42349 based on Foata normal form. 0/38904 useless extension candidates. Maximal degree in co-relation 157645. Up to 65346 conditions per place. [2023-08-30 15:13:15,261 INFO L137 encePairwiseOnDemand]: 416/429 looper letters, 106 selfloop transitions, 4 changer transitions 10/129 dead transitions. [2023-08-30 15:13:15,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 129 transitions, 594 flow [2023-08-30 15:13:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:13:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:13:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 972 transitions. [2023-08-30 15:13:15,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45314685314685316 [2023-08-30 15:13:15,265 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 972 transitions. [2023-08-30 15:13:15,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 972 transitions. [2023-08-30 15:13:15,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:13:15,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 972 transitions. [2023-08-30 15:13:15,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:15,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:15,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:15,271 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 167 flow. Second operand 5 states and 972 transitions. [2023-08-30 15:13:15,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 129 transitions, 594 flow [2023-08-30 15:13:15,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:13:15,274 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 208 flow [2023-08-30 15:13:15,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2023-08-30 15:13:15,275 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-08-30 15:13:15,275 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 208 flow [2023-08-30 15:13:15,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:15,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:13:15,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:13:15,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:13:15,277 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:13:15,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:13:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash -108241470, now seen corresponding path program 1 times [2023-08-30 15:13:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:13:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861287535] [2023-08-30 15:13:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:15,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:13:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:15,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:13:15,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861287535] [2023-08-30 15:13:15,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861287535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:13:15,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:13:15,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:13:15,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925649462] [2023-08-30 15:13:15,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:13:15,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:13:15,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:13:15,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:13:15,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:13:15,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 429 [2023-08-30 15:13:15,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:15,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:13:15,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 429 [2023-08-30 15:13:15,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:13:21,226 INFO L130 PetriNetUnfolder]: 47120/66196 cut-off events. [2023-08-30 15:13:21,227 INFO L131 PetriNetUnfolder]: For 21270/21270 co-relation queries the response was YES. [2023-08-30 15:13:21,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160811 conditions, 66196 events. 47120/66196 cut-off events. For 21270/21270 co-relation queries the response was YES. Maximal size of possible extension queue 3705. Compared 446657 event pairs, 29764 based on Foata normal form. 1288/40991 useless extension candidates. Maximal degree in co-relation 160802. Up to 46454 conditions per place. [2023-08-30 15:13:21,536 INFO L137 encePairwiseOnDemand]: 417/429 looper letters, 75 selfloop transitions, 4 changer transitions 26/114 dead transitions. [2023-08-30 15:13:21,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 114 transitions, 557 flow [2023-08-30 15:13:21,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:13:21,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:13:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1128 transitions. [2023-08-30 15:13:21,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382284382284382 [2023-08-30 15:13:21,539 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1128 transitions. [2023-08-30 15:13:21,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1128 transitions. [2023-08-30 15:13:21,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:13:21,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1128 transitions. [2023-08-30 15:13:21,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:21,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:21,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:21,545 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 208 flow. Second operand 6 states and 1128 transitions. [2023-08-30 15:13:21,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 114 transitions, 557 flow [2023-08-30 15:13:21,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 551 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 15:13:21,579 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 234 flow [2023-08-30 15:13:21,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2023-08-30 15:13:21,580 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-08-30 15:13:21,580 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 234 flow [2023-08-30 15:13:21,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:21,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:13:21,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:13:21,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:13:21,581 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:13:21,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:13:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1972283143, now seen corresponding path program 1 times [2023-08-30 15:13:21,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:13:21,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865316006] [2023-08-30 15:13:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:13:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:21,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:13:21,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865316006] [2023-08-30 15:13:21,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865316006] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:13:21,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853382073] [2023-08-30 15:13:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:21,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:13:21,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:13:21,688 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) [2023-08-30 15:13:21,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:13:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:21,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 15:13:21,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:13:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:21,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:13:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:21,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853382073] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:13:21,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:13:21,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 15:13:21,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249708720] [2023-08-30 15:13:21,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:13:21,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 15:13:21,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:13:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 15:13:21,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-08-30 15:13:22,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 429 [2023-08-30 15:13:22,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 234 flow. Second operand has 11 states, 11 states have (on average 169.45454545454547) internal successors, (1864), 11 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:22,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:13:22,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 429 [2023-08-30 15:13:22,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:13:27,157 INFO L130 PetriNetUnfolder]: 38560/54065 cut-off events. [2023-08-30 15:13:27,157 INFO L131 PetriNetUnfolder]: For 36626/36626 co-relation queries the response was YES. [2023-08-30 15:13:27,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144279 conditions, 54065 events. 38560/54065 cut-off events. For 36626/36626 co-relation queries the response was YES. Maximal size of possible extension queue 2951. Compared 355364 event pairs, 27718 based on Foata normal form. 588/33300 useless extension candidates. Maximal degree in co-relation 144267. Up to 42965 conditions per place. [2023-08-30 15:13:27,406 INFO L137 encePairwiseOnDemand]: 415/429 looper letters, 134 selfloop transitions, 6 changer transitions 21/170 dead transitions. [2023-08-30 15:13:27,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 170 transitions, 946 flow [2023-08-30 15:13:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:13:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:13:27,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1330 transitions. [2023-08-30 15:13:27,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2023-08-30 15:13:27,409 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1330 transitions. [2023-08-30 15:13:27,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1330 transitions. [2023-08-30 15:13:27,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:13:27,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1330 transitions. [2023-08-30 15:13:27,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:27,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:27,417 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:27,417 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 234 flow. Second operand 7 states and 1330 transitions. [2023-08-30 15:13:27,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 170 transitions, 946 flow [2023-08-30 15:13:27,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 170 transitions, 920 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 15:13:27,453 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 285 flow [2023-08-30 15:13:27,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2023-08-30 15:13:27,454 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2023-08-30 15:13:27,454 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 285 flow [2023-08-30 15:13:27,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.45454545454547) internal successors, (1864), 11 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:27,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:13:27,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:13:27,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:13:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:13:27,655 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:13:27,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:13:27,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1704660436, now seen corresponding path program 1 times [2023-08-30 15:13:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:13:27,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239837823] [2023-08-30 15:13:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:27,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:13:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:27,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:13:27,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239837823] [2023-08-30 15:13:27,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239837823] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:13:27,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989070843] [2023-08-30 15:13:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:27,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:13:27,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:13:27,745 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) [2023-08-30 15:13:27,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:13:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:27,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 15:13:27,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:13:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:27,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:13:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989070843] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:13:27,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:13:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 15:13:27,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206464021] [2023-08-30 15:13:27,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:13:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:13:27,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:13:27,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:13:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:13:28,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 429 [2023-08-30 15:13:28,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 285 flow. Second operand has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:28,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:13:28,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 429 [2023-08-30 15:13:28,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:13:32,793 INFO L130 PetriNetUnfolder]: 35402/49783 cut-off events. [2023-08-30 15:13:32,794 INFO L131 PetriNetUnfolder]: For 55191/55191 co-relation queries the response was YES. [2023-08-30 15:13:32,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149732 conditions, 49783 events. 35402/49783 cut-off events. For 55191/55191 co-relation queries the response was YES. Maximal size of possible extension queue 2943. Compared 325952 event pairs, 22223 based on Foata normal form. 48/29780 useless extension candidates. Maximal degree in co-relation 149718. Up to 34841 conditions per place. [2023-08-30 15:13:33,055 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 74 selfloop transitions, 5 changer transitions 28/116 dead transitions. [2023-08-30 15:13:33,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 116 transitions, 671 flow [2023-08-30 15:13:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:13:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:13:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1279 transitions. [2023-08-30 15:13:33,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259074259074259 [2023-08-30 15:13:33,058 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1279 transitions. [2023-08-30 15:13:33,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1279 transitions. [2023-08-30 15:13:33,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:13:33,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1279 transitions. [2023-08-30 15:13:33,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.71428571428572) internal successors, (1279), 7 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:33,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:33,065 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:33,065 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 285 flow. Second operand 7 states and 1279 transitions. [2023-08-30 15:13:33,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 116 transitions, 671 flow [2023-08-30 15:13:33,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 116 transitions, 619 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-08-30 15:13:33,131 INFO L231 Difference]: Finished difference. Result has 86 places, 63 transitions, 251 flow [2023-08-30 15:13:33,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=86, PETRI_TRANSITIONS=63} [2023-08-30 15:13:33,133 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 14 predicate places. [2023-08-30 15:13:33,133 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 63 transitions, 251 flow [2023-08-30 15:13:33,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:33,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:13:33,134 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:13:33,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 15:13:33,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 15:13:33,336 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:13:33,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:13:33,336 INFO L85 PathProgramCache]: Analyzing trace with hash -272064547, now seen corresponding path program 2 times [2023-08-30 15:13:33,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:13:33,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101512940] [2023-08-30 15:13:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:33,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:13:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:33,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:13:33,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101512940] [2023-08-30 15:13:33,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101512940] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:13:33,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119339477] [2023-08-30 15:13:33,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:13:33,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:13:33,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:13:33,997 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) [2023-08-30 15:13:34,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:13:34,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:13:34,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:13:34,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 15:13:34,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:13:34,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 15:13:34,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:13:34,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:13:34,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:13:34,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:13:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:34,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:13:34,338 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_262) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) is different from false [2023-08-30 15:13:34,354 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array Int Int)) (v_ArrVal_262 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_262) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-30 15:13:34,367 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:13:34,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 15:13:34,377 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:13:34,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-30 15:13:34,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-30 15:13:34,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-30 15:13:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-30 15:13:34,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119339477] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:13:34,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:13:34,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 15:13:34,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565583367] [2023-08-30 15:13:34,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:13:34,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 15:13:34,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:13:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 15:13:34,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=255, Unknown=2, NotChecked=66, Total=380 [2023-08-30 15:13:34,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 429 [2023-08-30 15:13:34,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 63 transitions, 251 flow. Second operand has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:34,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:13:34,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 429 [2023-08-30 15:13:34,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:13:40,004 INFO L130 PetriNetUnfolder]: 39901/55554 cut-off events. [2023-08-30 15:13:40,005 INFO L131 PetriNetUnfolder]: For 42237/42237 co-relation queries the response was YES. [2023-08-30 15:13:40,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154317 conditions, 55554 events. 39901/55554 cut-off events. For 42237/42237 co-relation queries the response was YES. Maximal size of possible extension queue 2894. Compared 351547 event pairs, 21402 based on Foata normal form. 0/33537 useless extension candidates. Maximal degree in co-relation 154302. Up to 54319 conditions per place. [2023-08-30 15:13:40,302 INFO L137 encePairwiseOnDemand]: 417/429 looper letters, 68 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-08-30 15:13:40,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 487 flow [2023-08-30 15:13:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:13:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:13:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1119 transitions. [2023-08-30 15:13:40,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3726273726273726 [2023-08-30 15:13:40,305 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1119 transitions. [2023-08-30 15:13:40,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1119 transitions. [2023-08-30 15:13:40,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:13:40,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1119 transitions. [2023-08-30 15:13:40,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.85714285714286) internal successors, (1119), 7 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:40,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:40,311 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:40,311 INFO L175 Difference]: Start difference. First operand has 86 places, 63 transitions, 251 flow. Second operand 7 states and 1119 transitions. [2023-08-30 15:13:40,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 487 flow [2023-08-30 15:13:40,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 461 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 15:13:40,423 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 304 flow [2023-08-30 15:13:40,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2023-08-30 15:13:40,424 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2023-08-30 15:13:40,424 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 304 flow [2023-08-30 15:13:40,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:40,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:13:40,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:13:40,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:13:40,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:13:40,630 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:13:40,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:13:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash 155935032, now seen corresponding path program 1 times [2023-08-30 15:13:40,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:13:40,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811618004] [2023-08-30 15:13:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:40,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:13:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:40,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:13:40,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811618004] [2023-08-30 15:13:40,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811618004] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:13:40,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310893064] [2023-08-30 15:13:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:40,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:13:40,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:13:40,744 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) [2023-08-30 15:13:40,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:13:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:40,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 15:13:40,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:13:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:40,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:13:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:40,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310893064] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:13:40,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:13:40,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 15:13:40,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529638375] [2023-08-30 15:13:40,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:13:40,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 15:13:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:13:40,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 15:13:40,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-08-30 15:13:41,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 429 [2023-08-30 15:13:41,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 304 flow. Second operand has 17 states, 17 states have (on average 169.35294117647058) internal successors, (2879), 17 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:41,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:13:41,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 429 [2023-08-30 15:13:41,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:13:45,841 INFO L130 PetriNetUnfolder]: 32815/45861 cut-off events. [2023-08-30 15:13:45,842 INFO L131 PetriNetUnfolder]: For 34225/34225 co-relation queries the response was YES. [2023-08-30 15:13:45,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133679 conditions, 45861 events. 32815/45861 cut-off events. For 34225/34225 co-relation queries the response was YES. Maximal size of possible extension queue 2453. Compared 295628 event pairs, 16383 based on Foata normal form. 948/28460 useless extension candidates. Maximal degree in co-relation 133665. Up to 28724 conditions per place. [2023-08-30 15:13:46,105 INFO L137 encePairwiseOnDemand]: 415/429 looper letters, 211 selfloop transitions, 18 changer transitions 14/253 dead transitions. [2023-08-30 15:13:46,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 253 transitions, 1475 flow [2023-08-30 15:13:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:13:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:13:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1905 transitions. [2023-08-30 15:13:46,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44405594405594406 [2023-08-30 15:13:46,108 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1905 transitions. [2023-08-30 15:13:46,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1905 transitions. [2023-08-30 15:13:46,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:13:46,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1905 transitions. [2023-08-30 15:13:46,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 190.5) internal successors, (1905), 10 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:46,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 429.0) internal successors, (4719), 11 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:46,116 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 429.0) internal successors, (4719), 11 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:46,116 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 304 flow. Second operand 10 states and 1905 transitions. [2023-08-30 15:13:46,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 253 transitions, 1475 flow [2023-08-30 15:13:46,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 253 transitions, 1436 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-30 15:13:46,177 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 480 flow [2023-08-30 15:13:46,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=480, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2023-08-30 15:13:46,177 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-08-30 15:13:46,177 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 480 flow [2023-08-30 15:13:46,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 169.35294117647058) internal successors, (2879), 17 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:46,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:13:46,178 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:13:46,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:13:46,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:13:46,379 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:13:46,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:13:46,379 INFO L85 PathProgramCache]: Analyzing trace with hash -272064546, now seen corresponding path program 1 times [2023-08-30 15:13:46,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:13:46,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760172102] [2023-08-30 15:13:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:46,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:13:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:46,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:13:46,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760172102] [2023-08-30 15:13:46,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760172102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:13:46,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585302646] [2023-08-30 15:13:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:46,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:13:46,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:13:46,717 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) [2023-08-30 15:13:46,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:13:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:47,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 15:13:47,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:13:47,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 15:13:47,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:13:47,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:13:47,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:13:47,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:13:47,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:47,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:13:47,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:13:47,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-30 15:13:47,257 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:13:47,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-30 15:13:47,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-30 15:13:47,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-08-30 15:13:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:13:47,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585302646] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:13:47,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:13:47,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 15:13:47,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888498052] [2023-08-30 15:13:47,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:13:47,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 15:13:47,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:13:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 15:13:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=315, Unknown=4, NotChecked=0, Total=380 [2023-08-30 15:13:47,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 429 [2023-08-30 15:13:47,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 480 flow. Second operand has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:47,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:13:47,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 429 [2023-08-30 15:13:47,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:13:53,018 INFO L130 PetriNetUnfolder]: 37226/52019 cut-off events. [2023-08-30 15:13:53,018 INFO L131 PetriNetUnfolder]: For 70058/70058 co-relation queries the response was YES. [2023-08-30 15:13:53,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177212 conditions, 52019 events. 37226/52019 cut-off events. For 70058/70058 co-relation queries the response was YES. Maximal size of possible extension queue 2548. Compared 328080 event pairs, 20612 based on Foata normal form. 0/31886 useless extension candidates. Maximal degree in co-relation 177195. Up to 50865 conditions per place. [2023-08-30 15:13:53,295 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 78 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2023-08-30 15:13:53,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 98 transitions, 756 flow [2023-08-30 15:13:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:13:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:13:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1116 transitions. [2023-08-30 15:13:53,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37162837162837165 [2023-08-30 15:13:53,297 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1116 transitions. [2023-08-30 15:13:53,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1116 transitions. [2023-08-30 15:13:53,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:13:53,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1116 transitions. [2023-08-30 15:13:53,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.42857142857142) internal successors, (1116), 7 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:53,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:53,303 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:53,303 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 480 flow. Second operand 7 states and 1116 transitions. [2023-08-30 15:13:53,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 98 transitions, 756 flow [2023-08-30 15:13:53,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 98 transitions, 694 flow, removed 28 selfloop flow, removed 5 redundant places. [2023-08-30 15:13:53,696 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 444 flow [2023-08-30 15:13:53,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2023-08-30 15:13:53,697 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2023-08-30 15:13:53,697 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 444 flow [2023-08-30 15:13:53,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:53,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:13:53,698 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:13:53,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:13:53,898 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,SelfDestructingSolverStorable12 [2023-08-30 15:13:53,898 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:13:53,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:13:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash -272064545, now seen corresponding path program 1 times [2023-08-30 15:13:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:13:53,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893781091] [2023-08-30 15:13:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:13:53,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:13:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:13:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:13:53,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:13:53,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893781091] [2023-08-30 15:13:53,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893781091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:13:53,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:13:53,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:13:53,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522143471] [2023-08-30 15:13:53,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:13:53,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:13:53,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:13:53,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:13:53,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:13:53,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-08-30 15:13:53,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:13:53,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:13:53,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-08-30 15:13:53,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:14:00,054 INFO L130 PetriNetUnfolder]: 45075/62590 cut-off events. [2023-08-30 15:14:00,054 INFO L131 PetriNetUnfolder]: For 63948/63948 co-relation queries the response was YES. [2023-08-30 15:14:00,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202095 conditions, 62590 events. 45075/62590 cut-off events. For 63948/63948 co-relation queries the response was YES. Maximal size of possible extension queue 3349. Compared 410588 event pairs, 21513 based on Foata normal form. 4/37621 useless extension candidates. Maximal degree in co-relation 202079. Up to 36680 conditions per place. [2023-08-30 15:14:00,405 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 98 selfloop transitions, 8 changer transitions 0/116 dead transitions. [2023-08-30 15:14:00,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 782 flow [2023-08-30 15:14:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:14:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:14:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 15:14:00,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48096348096348096 [2023-08-30 15:14:00,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 15:14:00,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 15:14:00,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:14:00,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 15:14:00,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:00,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:00,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:00,409 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 444 flow. Second operand 3 states and 619 transitions. [2023-08-30 15:14:00,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 782 flow [2023-08-30 15:14:01,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 116 transitions, 760 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 15:14:01,176 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 400 flow [2023-08-30 15:14:01,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-08-30 15:14:01,177 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2023-08-30 15:14:01,177 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 400 flow [2023-08-30 15:14:01,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:01,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:14:01,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:14:01,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 15:14:01,177 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:14:01,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:14:01,178 INFO L85 PathProgramCache]: Analyzing trace with hash 345959171, now seen corresponding path program 1 times [2023-08-30 15:14:01,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:14:01,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402363636] [2023-08-30 15:14:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:14:01,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:14:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:14:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:14:01,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:14:01,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402363636] [2023-08-30 15:14:01,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402363636] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:14:01,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178948331] [2023-08-30 15:14:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:14:01,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:14:01,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:14:01,609 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) [2023-08-30 15:14:01,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:14:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:14:01,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 15:14:01,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:14:01,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 15:14:01,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:14:01,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:14:01,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:14:01,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:14:01,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-08-30 15:14:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:14:01,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:14:02,000 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_399 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_399) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) 4294967296)) is different from false [2023-08-30 15:14:02,010 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_37| Int) (v_ArrVal_399 (Array Int Int))) (or (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_37| v_ArrVal_399) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 4294967296) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_37| |c_#StackHeapBarrier|))) is different from false [2023-08-30 15:14:02,024 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_37| Int) (v_ArrVal_399 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_398) |v_thread1Thread1of1ForFork0_~#t2~0.base_37| v_ArrVal_399) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_37| |c_#StackHeapBarrier|))) is different from false [2023-08-30 15:14:02,034 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:14:02,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-30 15:14:02,041 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:14:02,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-30 15:14:02,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-30 15:14:02,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-30 15:14:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-30 15:14:02,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178948331] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:14:02,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:14:02,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-30 15:14:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897379203] [2023-08-30 15:14:02,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:14:02,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 15:14:02,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:14:02,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 15:14:02,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=296, Unknown=3, NotChecked=108, Total=462 [2023-08-30 15:14:02,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 429 [2023-08-30 15:14:02,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 400 flow. Second operand has 22 states, 22 states have (on average 144.3181818181818) internal successors, (3175), 22 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:02,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:14:02,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 429 [2023-08-30 15:14:02,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:14:14,049 INFO L130 PetriNetUnfolder]: 85604/117938 cut-off events. [2023-08-30 15:14:14,050 INFO L131 PetriNetUnfolder]: For 163422/163422 co-relation queries the response was YES. [2023-08-30 15:14:14,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388394 conditions, 117938 events. 85604/117938 cut-off events. For 163422/163422 co-relation queries the response was YES. Maximal size of possible extension queue 5600. Compared 803812 event pairs, 32112 based on Foata normal form. 0/75126 useless extension candidates. Maximal degree in co-relation 388377. Up to 63872 conditions per place. [2023-08-30 15:14:14,771 INFO L137 encePairwiseOnDemand]: 416/429 looper letters, 166 selfloop transitions, 31 changer transitions 0/202 dead transitions. [2023-08-30 15:14:14,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 202 transitions, 1406 flow [2023-08-30 15:14:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:14:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:14:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2023 transitions. [2023-08-30 15:14:14,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3627398242782858 [2023-08-30 15:14:14,775 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2023 transitions. [2023-08-30 15:14:14,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2023 transitions. [2023-08-30 15:14:14,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:14:14,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2023 transitions. [2023-08-30 15:14:14,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:14,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 429.0) internal successors, (6006), 14 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:14,782 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 429.0) internal successors, (6006), 14 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:14,782 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 400 flow. Second operand 13 states and 2023 transitions. [2023-08-30 15:14:14,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 202 transitions, 1406 flow [2023-08-30 15:14:15,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 202 transitions, 1390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:14:15,076 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 607 flow [2023-08-30 15:14:15,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=607, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2023-08-30 15:14:15,076 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 35 predicate places. [2023-08-30 15:14:15,076 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 607 flow [2023-08-30 15:14:15,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 144.3181818181818) internal successors, (3175), 22 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:15,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:14:15,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:14:15,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 15:14:15,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:14:15,285 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:14:15,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:14:15,285 INFO L85 PathProgramCache]: Analyzing trace with hash 345959173, now seen corresponding path program 1 times [2023-08-30 15:14:15,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:14:15,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641112973] [2023-08-30 15:14:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:14:15,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:14:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:14:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:14:15,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:14:15,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641112973] [2023-08-30 15:14:15,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641112973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:14:15,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:14:15,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:14:15,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190458265] [2023-08-30 15:14:15,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:14:15,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:14:15,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:14:15,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:14:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:14:15,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-08-30 15:14:15,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:15,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:14:15,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-08-30 15:14:15,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:14:30,041 INFO L130 PetriNetUnfolder]: 100504/138425 cut-off events. [2023-08-30 15:14:30,041 INFO L131 PetriNetUnfolder]: For 218621/218784 co-relation queries the response was YES. [2023-08-30 15:14:30,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501418 conditions, 138425 events. 100504/138425 cut-off events. For 218621/218784 co-relation queries the response was YES. Maximal size of possible extension queue 6195. Compared 980919 event pairs, 59201 based on Foata normal form. 21/96185 useless extension candidates. Maximal degree in co-relation 501396. Up to 104389 conditions per place. [2023-08-30 15:14:31,236 INFO L137 encePairwiseOnDemand]: 422/429 looper letters, 125 selfloop transitions, 5 changer transitions 0/155 dead transitions. [2023-08-30 15:14:31,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 155 transitions, 1187 flow [2023-08-30 15:14:31,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:14:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:14:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-08-30 15:14:31,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48174048174048173 [2023-08-30 15:14:31,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-08-30 15:14:31,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-08-30 15:14:31,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:14:31,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-08-30 15:14:31,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:31,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:31,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:31,240 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 607 flow. Second operand 3 states and 620 transitions. [2023-08-30 15:14:31,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 155 transitions, 1187 flow [2023-08-30 15:14:32,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 155 transitions, 1180 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:14:32,676 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 646 flow [2023-08-30 15:14:32,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2023-08-30 15:14:32,677 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 35 predicate places. [2023-08-30 15:14:32,677 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 646 flow [2023-08-30 15:14:32,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:32,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:14:32,678 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:14:32,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 15:14:32,678 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 15:14:32,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:14:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash 345959170, now seen corresponding path program 2 times [2023-08-30 15:14:32,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:14:32,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669336149] [2023-08-30 15:14:32,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:14:32,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:14:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:14:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:14:33,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:14:33,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669336149] [2023-08-30 15:14:33,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669336149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:14:33,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11557503] [2023-08-30 15:14:33,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:14:33,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:14:33,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:14:33,009 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) [2023-08-30 15:14:33,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:14:33,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:14:33,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:14:33,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 15:14:33,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:14:33,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 15:14:33,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:14:33,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:14:33,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:14:33,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:14:33,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-08-30 15:14:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:14:33,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:14:33,336 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_469) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) 9223372039002259456))) is different from false [2023-08-30 15:14:33,347 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int)) (|v_thread1Thread1of1ForFork0_~#t2~0.base_39| Int)) (or (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_39| |c_#StackHeapBarrier|) (< 0 (+ (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_39| v_ArrVal_469) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456)))) is different from false [2023-08-30 15:14:33,361 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_468 (Array Int Int)) (|v_thread1Thread1of1ForFork0_~#t2~0.base_39| Int)) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_468) |v_thread1Thread1of1ForFork0_~#t2~0.base_39| v_ArrVal_469) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_39| |c_#StackHeapBarrier|))) is different from false [2023-08-30 15:14:33,372 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:14:33,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 15:14:33,380 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:14:33,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-08-30 15:14:33,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-30 15:14:33,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-30 15:14:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-30 15:14:33,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11557503] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:14:33,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:14:33,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-30 15:14:33,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942138697] [2023-08-30 15:14:33,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:14:33,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 15:14:33,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:14:33,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 15:14:33,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=296, Unknown=3, NotChecked=108, Total=462 [2023-08-30 15:14:33,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 429 [2023-08-30 15:14:33,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 646 flow. Second operand has 22 states, 22 states have (on average 144.3181818181818) internal successors, (3175), 22 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:33,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:14:33,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 429 [2023-08-30 15:14:33,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand