./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.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/popl20-min-max-dec.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 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca --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 15:31:18,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:31:18,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:31:18,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:31:18,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:31:18,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:31:18,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:31:18,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:31:18,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:31:18,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:31:18,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:31:18,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:31:18,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:31:18,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:31:18,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:31:18,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:31:18,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:31:18,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:31:18,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:31:18,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:31:18,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:31:18,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:31:18,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:31:18,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:31:18,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:31:18,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:31:18,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:31:18,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:31:18,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:31:18,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:31:18,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:31:18,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:31:18,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:31:18,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:31:18,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:31:18,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:31:18,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:31:18,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:31:18,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:31:18,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:31:18,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:31:18,391 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:31:18,424 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:31:18,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:31:18,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:31:18,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:31:18,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:31:18,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:31:18,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:31:18,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:31:18,426 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:31:18,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:31:18,426 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:31:18,426 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:31:18,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:31:18,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:31:18,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:31:18,428 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:31:18,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:31:18,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:31:18,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:31:18,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:31:18,697 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:31:18,698 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:31:18,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-08-30 15:31:19,590 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:31:19,759 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:31:19,759 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-08-30 15:31:19,765 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e93f7044/7b3944b7d26b4a4287666fe41c448fe8/FLAG1a1cc1102 [2023-08-30 15:31:19,773 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e93f7044/7b3944b7d26b4a4287666fe41c448fe8 [2023-08-30 15:31:19,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:31:19,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:31:19,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:31:19,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:31:19,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:31:19,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:19,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f8a68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19, skipping insertion in model container [2023-08-30 15:31:19,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:19,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:31:19,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:31:19,910 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/popl20-min-max-dec.wvr.c[3019,3032] [2023-08-30 15:31:19,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:31:19,918 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:31:19,934 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/popl20-min-max-dec.wvr.c[3019,3032] [2023-08-30 15:31:19,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:31:19,942 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:31:19,942 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:31:19,946 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:31:19,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19 WrapperNode [2023-08-30 15:31:19,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:31:19,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:31:19,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:31:19,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:31:19,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:19,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:19,970 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 145 [2023-08-30 15:31:19,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:31:19,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:31:19,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:31:19,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:31:19,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:19,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:19,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:19,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:19,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:19,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:20,000 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:20,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:20,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:31:20,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:31:20,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:31:20,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:31:20,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (1/1) ... [2023-08-30 15:31:20,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:31:20,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:31:20,027 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 15:31:20,037 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 15:31:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:31:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:31:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:31:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:31:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:31:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:31:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:31:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:31:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:31:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:31:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:31:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:31:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:31:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:31:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:31:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:31:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:31:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:31:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:31:20,057 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 15:31:20,137 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:31:20,138 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:31:20,489 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:31:20,602 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:31:20,602 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:31:20,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:31:20 BoogieIcfgContainer [2023-08-30 15:31:20,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:31:20,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:31:20,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:31:20,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:31:20,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:31:19" (1/3) ... [2023-08-30 15:31:20,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5e8e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:31:20, skipping insertion in model container [2023-08-30 15:31:20,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:31:19" (2/3) ... [2023-08-30 15:31:20,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5e8e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:31:20, skipping insertion in model container [2023-08-30 15:31:20,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:31:20" (3/3) ... [2023-08-30 15:31:20,610 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2023-08-30 15:31:20,615 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:31:20,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:31:20,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 15:31:20,621 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:31:20,691 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 15:31:20,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 180 transitions, 392 flow [2023-08-30 15:31:20,773 INFO L130 PetriNetUnfolder]: 12/176 cut-off events. [2023-08-30 15:31:20,774 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:31:20,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 176 events. 12/176 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-08-30 15:31:20,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 180 transitions, 392 flow [2023-08-30 15:31:20,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 156 transitions, 333 flow [2023-08-30 15:31:20,783 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:31:20,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 156 transitions, 333 flow [2023-08-30 15:31:20,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 156 transitions, 333 flow [2023-08-30 15:31:20,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 156 transitions, 333 flow [2023-08-30 15:31:20,812 INFO L130 PetriNetUnfolder]: 11/156 cut-off events. [2023-08-30 15:31:20,812 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:31:20,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 156 events. 11/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 203 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-08-30 15:31:20,815 INFO L119 LiptonReduction]: Number of co-enabled transitions 3864 [2023-08-30 15:31:26,094 INFO L134 LiptonReduction]: Checked pairs total: 5813 [2023-08-30 15:31:26,094 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-30 15:31:26,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:31:26,110 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;@6b38b02c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:31:26,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-30 15:31:26,112 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:31:26,112 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:31:26,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:31:26,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:31:26,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:31:26,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:31:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 24265, now seen corresponding path program 1 times [2023-08-30 15:31:26,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:31:26,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845567316] [2023-08-30 15:31:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:26,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:31:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:26,294 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 15:31:26,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:31:26,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845567316] [2023-08-30 15:31:26,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845567316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:31:26,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:31:26,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:31:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349238183] [2023-08-30 15:31:26,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:31:26,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:31:26,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:31:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:31:26,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:31:26,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-08-30 15:31:26,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 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 15:31:26,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:31:26,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-08-30 15:31:26,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:31:27,666 INFO L130 PetriNetUnfolder]: 14867/19013 cut-off events. [2023-08-30 15:31:27,666 INFO L131 PetriNetUnfolder]: For 578/578 co-relation queries the response was YES. [2023-08-30 15:31:27,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39302 conditions, 19013 events. 14867/19013 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 95418 event pairs, 10390 based on Foata normal form. 0/8955 useless extension candidates. Maximal degree in co-relation 17376. Up to 9497 conditions per place. [2023-08-30 15:31:27,754 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 71 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 15:31:27,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 336 flow [2023-08-30 15:31:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:31:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:31:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-08-30 15:31:27,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53596757852077 [2023-08-30 15:31:27,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-08-30 15:31:27,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-08-30 15:31:27,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:31:27,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-08-30 15:31:27,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 15:31:27,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:27,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:27,774 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 103 flow. Second operand 3 states and 529 transitions. [2023-08-30 15:31:27,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 336 flow [2023-08-30 15:31:27,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 310 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:31:27,822 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 100 flow [2023-08-30 15:31:27,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-30 15:31:27,826 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-08-30 15:31:27,826 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 100 flow [2023-08-30 15:31:27,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 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 15:31:27,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:31:27,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:31:27,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:31:27,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:31:27,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:31:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash 753399, now seen corresponding path program 1 times [2023-08-30 15:31:27,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:31:27,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832256579] [2023-08-30 15:31:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:27,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:31:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:27,888 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 15:31:27,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:31:27,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832256579] [2023-08-30 15:31:27,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832256579] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:31:27,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434083480] [2023-08-30 15:31:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:27,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:31:27,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:31:27,901 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 15:31:27,916 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 15:31:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:27,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:31:27,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:31:28,014 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 15:31:28,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:31:28,040 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 15:31:28,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434083480] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:31:28,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:31:28,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:31:28,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336234427] [2023-08-30 15:31:28,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:31:28,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:31:28,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:31:28,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:31:28,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:31:28,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-08-30 15:31:28,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 100 flow. Second operand has 7 states, 7 states have (on average 151.14285714285714) internal successors, (1058), 7 states have internal predecessors, (1058), 0 states have call successors, (0), 0 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 15:31:28,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:31:28,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-08-30 15:31:28,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:31:30,884 INFO L130 PetriNetUnfolder]: 37169/47531 cut-off events. [2023-08-30 15:31:30,884 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:31:30,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97393 conditions, 47531 events. 37169/47531 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2442. Compared 261251 event pairs, 25975 based on Foata normal form. 0/22418 useless extension candidates. Maximal degree in co-relation 77911. Up to 9496 conditions per place. [2023-08-30 15:31:31,083 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 172 selfloop transitions, 9 changer transitions 0/182 dead transitions. [2023-08-30 15:31:31,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 182 transitions, 790 flow [2023-08-30 15:31:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:31:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:31:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1234 transitions. [2023-08-30 15:31:31,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358228397742075 [2023-08-30 15:31:31,088 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1234 transitions. [2023-08-30 15:31:31,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1234 transitions. [2023-08-30 15:31:31,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:31:31,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1234 transitions. [2023-08-30 15:31:31,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.28571428571428) internal successors, (1234), 7 states have internal predecessors, (1234), 0 states have call successors, (0), 0 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 15:31:31,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 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 15:31:31,096 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 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 15:31:31,096 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 100 flow. Second operand 7 states and 1234 transitions. [2023-08-30 15:31:31,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 182 transitions, 790 flow [2023-08-30 15:31:31,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 182 transitions, 788 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:31:31,100 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 157 flow [2023-08-30 15:31:31,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=157, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-08-30 15:31:31,101 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-30 15:31:31,101 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 157 flow [2023-08-30 15:31:31,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 151.14285714285714) internal successors, (1058), 7 states have internal predecessors, (1058), 0 states have call successors, (0), 0 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 15:31:31,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:31:31,102 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:31:31,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:31:31,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:31:31,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:31:31,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:31:31,309 INFO L85 PathProgramCache]: Analyzing trace with hash 23356105, now seen corresponding path program 1 times [2023-08-30 15:31:31,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:31:31,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966913604] [2023-08-30 15:31:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:31,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:31:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:31:31,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:31:31,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966913604] [2023-08-30 15:31:31,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966913604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:31:31,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:31:31,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:31:31,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784698410] [2023-08-30 15:31:31,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:31:31,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:31:31,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:31:31,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:31:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:31:31,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-08-30 15:31:31,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 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 15:31:31,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:31:31,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-08-30 15:31:31,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:31:33,804 INFO L130 PetriNetUnfolder]: 37166/47527 cut-off events. [2023-08-30 15:31:33,805 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:31:33,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97395 conditions, 47527 events. 37166/47527 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2706. Compared 264708 event pairs, 25975 based on Foata normal form. 2/22349 useless extension candidates. Maximal degree in co-relation 58427. Up to 47467 conditions per place. [2023-08-30 15:31:34,183 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 15:31:34,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 212 flow [2023-08-30 15:31:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:31:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:31:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-30 15:31:34,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49442755825734547 [2023-08-30 15:31:34,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-30 15:31:34,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-30 15:31:34,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:31:34,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-30 15:31:34,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 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 15:31:34,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:34,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:34,191 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 157 flow. Second operand 3 states and 488 transitions. [2023-08-30 15:31:34,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 212 flow [2023-08-30 15:31:34,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 204 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:31:34,192 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 124 flow [2023-08-30 15:31:34,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-30 15:31:34,193 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 15:31:34,193 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 124 flow [2023-08-30 15:31:34,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 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 15:31:34,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:31:34,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:31:34,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:31:34,194 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:31:34,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:31:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash 966793443, now seen corresponding path program 1 times [2023-08-30 15:31:34,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:31:34,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831755264] [2023-08-30 15:31:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:34,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:31:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:34,240 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 15:31:34,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:31:34,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831755264] [2023-08-30 15:31:34,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831755264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:31:34,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:31:34,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:31:34,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396561450] [2023-08-30 15:31:34,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:31:34,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:31:34,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:31:34,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:31:34,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:31:34,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:31:34,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 15:31:34,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:31:34,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:31:34,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:31:37,796 INFO L130 PetriNetUnfolder]: 52386/67057 cut-off events. [2023-08-30 15:31:37,796 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:31:37,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137243 conditions, 67057 events. 52386/67057 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3655. Compared 395826 event pairs, 25985 based on Foata normal form. 0/31657 useless extension candidates. Maximal degree in co-relation 137231. Up to 47478 conditions per place. [2023-08-30 15:31:38,054 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 67 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 15:31:38,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 325 flow [2023-08-30 15:31:38,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:31:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:31:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 15:31:38,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268490374873354 [2023-08-30 15:31:38,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 15:31:38,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 15:31:38,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:31:38,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 15:31:38,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 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 15:31:38,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:38,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:38,059 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 124 flow. Second operand 3 states and 520 transitions. [2023-08-30 15:31:38,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 325 flow [2023-08-30 15:31:38,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:31:38,061 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 137 flow [2023-08-30 15:31:38,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-08-30 15:31:38,061 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-08-30 15:31:38,061 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 137 flow [2023-08-30 15:31:38,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 15:31:38,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:31:38,062 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:31:38,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:31:38,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:31:38,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:31:38,063 INFO L85 PathProgramCache]: Analyzing trace with hash 970417879, now seen corresponding path program 2 times [2023-08-30 15:31:38,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:31:38,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048568988] [2023-08-30 15:31:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:38,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:31:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:38,151 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 15:31:38,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:31:38,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048568988] [2023-08-30 15:31:38,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048568988] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:31:38,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089347099] [2023-08-30 15:31:38,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:31:38,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:31:38,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:31:38,154 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 15:31:38,156 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 15:31:38,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:31:38,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:31:38,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:31:38,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:31:38,231 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 15:31:38,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:31:38,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089347099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:31:38,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:31:38,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:31:38,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739009322] [2023-08-30 15:31:38,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:31:38,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:31:38,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:31:38,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:31:38,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:31:38,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:31:38,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 15:31:38,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:31:38,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:31:38,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:31:42,009 INFO L130 PetriNetUnfolder]: 52246/66916 cut-off events. [2023-08-30 15:31:42,009 INFO L131 PetriNetUnfolder]: For 7468/7468 co-relation queries the response was YES. [2023-08-30 15:31:42,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145938 conditions, 66916 events. 52246/66916 cut-off events. For 7468/7468 co-relation queries the response was YES. Maximal size of possible extension queue 3654. Compared 388168 event pairs, 37005 based on Foata normal form. 1/34577 useless extension candidates. Maximal degree in co-relation 145925. Up to 66836 conditions per place. [2023-08-30 15:31:42,286 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 15:31:42,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 209 flow [2023-08-30 15:31:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:31:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:31:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-30 15:31:42,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2023-08-30 15:31:42,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-30 15:31:42,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-30 15:31:42,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:31:42,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-30 15:31:42,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:31:42,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:42,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:42,291 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 137 flow. Second operand 3 states and 490 transitions. [2023-08-30 15:31:42,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 209 flow [2023-08-30 15:31:42,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 197 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 15:31:42,296 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 117 flow [2023-08-30 15:31:42,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-08-30 15:31:42,296 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-30 15:31:42,297 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 117 flow [2023-08-30 15:31:42,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 15:31:42,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:31:42,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:31:42,307 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 15:31:42,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:31:42,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:31:42,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:31:42,502 INFO L85 PathProgramCache]: Analyzing trace with hash -94173660, now seen corresponding path program 1 times [2023-08-30 15:31:42,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:31:42,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166765807] [2023-08-30 15:31:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:31:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:42,561 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 15:31:42,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:31:42,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166765807] [2023-08-30 15:31:42,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166765807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:31:42,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727160151] [2023-08-30 15:31:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:42,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:31:42,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:31:42,564 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 15:31:42,565 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 15:31:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:42,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:31:42,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:31:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:31:42,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:31:42,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727160151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:31:42,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:31:42,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 15:31:42,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931978323] [2023-08-30 15:31:42,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:31:42,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:31:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:31:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:31:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:31:42,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 329 [2023-08-30 15:31:42,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 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 15:31:42,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:31:42,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 329 [2023-08-30 15:31:42,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:31:45,636 INFO L130 PetriNetUnfolder]: 41797/53534 cut-off events. [2023-08-30 15:31:45,637 INFO L131 PetriNetUnfolder]: For 3576/3576 co-relation queries the response was YES. [2023-08-30 15:31:45,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115549 conditions, 53534 events. 41797/53534 cut-off events. For 3576/3576 co-relation queries the response was YES. Maximal size of possible extension queue 2968. Compared 304000 event pairs, 29604 based on Foata normal form. 1/27663 useless extension candidates. Maximal degree in co-relation 115539. Up to 53470 conditions per place. [2023-08-30 15:31:45,834 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 15:31:45,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 199 flow [2023-08-30 15:31:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:31:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:31:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 15:31:45,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49138804457953394 [2023-08-30 15:31:45,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 15:31:45,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 15:31:45,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:31:45,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 15:31:45,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 15:31:45,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:45,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:45,839 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 117 flow. Second operand 3 states and 485 transitions. [2023-08-30 15:31:45,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 199 flow [2023-08-30 15:31:45,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 196 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 15:31:45,842 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 122 flow [2023-08-30 15:31:45,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-30 15:31:45,842 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 15:31:45,842 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 122 flow [2023-08-30 15:31:45,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 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 15:31:45,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:31:45,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:31:45,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 15:31:46,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:31:46,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:31:46,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:31:46,047 INFO L85 PathProgramCache]: Analyzing trace with hash 451344900, now seen corresponding path program 1 times [2023-08-30 15:31:46,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:31:46,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920024365] [2023-08-30 15:31:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:46,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:31:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:31:46,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:31:46,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920024365] [2023-08-30 15:31:46,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920024365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:31:46,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538443927] [2023-08-30 15:31:46,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:46,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:31:46,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:31:46,100 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 15:31:46,131 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 15:31:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:46,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:31:46,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:31:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:31:46,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:31:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:31:46,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538443927] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:31:46,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:31:46,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 15:31:46,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061375928] [2023-08-30 15:31:46,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:31:46,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:31:46,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:31:46,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:31:46,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:31:46,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:31:46,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 122 flow. Second operand has 13 states, 13 states have (on average 142.69230769230768) internal successors, (1855), 13 states have internal predecessors, (1855), 0 states have call successors, (0), 0 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 15:31:46,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:31:46,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:31:46,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:31:49,938 INFO L130 PetriNetUnfolder]: 45473/58508 cut-off events. [2023-08-30 15:31:49,939 INFO L131 PetriNetUnfolder]: For 2008/2008 co-relation queries the response was YES. [2023-08-30 15:31:50,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126464 conditions, 58508 events. 45473/58508 cut-off events. For 2008/2008 co-relation queries the response was YES. Maximal size of possible extension queue 2888. Compared 350697 event pairs, 9888 based on Foata normal form. 212/31818 useless extension candidates. Maximal degree in co-relation 126452. Up to 16907 conditions per place. [2023-08-30 15:31:50,197 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 230 selfloop transitions, 14 changer transitions 0/245 dead transitions. [2023-08-30 15:31:50,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 245 transitions, 1075 flow [2023-08-30 15:31:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:31:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:31:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2091 transitions. [2023-08-30 15:31:50,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888940846387655 [2023-08-30 15:31:50,203 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2091 transitions. [2023-08-30 15:31:50,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2091 transitions. [2023-08-30 15:31:50,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:31:50,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2091 transitions. [2023-08-30 15:31:50,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.84615384615384) internal successors, (2091), 13 states have internal predecessors, (2091), 0 states have call successors, (0), 0 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 15:31:50,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 329.0) internal successors, (4606), 14 states have internal predecessors, (4606), 0 states have call successors, (0), 0 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 15:31:50,211 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 329.0) internal successors, (4606), 14 states have internal predecessors, (4606), 0 states have call successors, (0), 0 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 15:31:50,211 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 122 flow. Second operand 13 states and 2091 transitions. [2023-08-30 15:31:50,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 245 transitions, 1075 flow [2023-08-30 15:31:50,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 245 transitions, 1071 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:31:50,216 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 236 flow [2023-08-30 15:31:50,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=236, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-30 15:31:50,217 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-30 15:31:50,217 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 236 flow [2023-08-30 15:31:50,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 142.69230769230768) internal successors, (1855), 13 states have internal predecessors, (1855), 0 states have call successors, (0), 0 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 15:31:50,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:31:50,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:31:50,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 15:31:50,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:31:50,421 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:31:50,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:31:50,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1267936693, now seen corresponding path program 1 times [2023-08-30 15:31:50,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:31:50,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575528910] [2023-08-30 15:31:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:50,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:31:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:31:50,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:31:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575528910] [2023-08-30 15:31:50,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575528910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:31:50,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:31:50,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:31:50,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202732467] [2023-08-30 15:31:50,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:31:50,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:31:50,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:31:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:31:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:31:50,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:31:50,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:31:50,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:31:50,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:31:50,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:31:55,306 INFO L130 PetriNetUnfolder]: 61647/79404 cut-off events. [2023-08-30 15:31:55,307 INFO L131 PetriNetUnfolder]: For 164740/164779 co-relation queries the response was YES. [2023-08-30 15:31:55,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223432 conditions, 79404 events. 61647/79404 cut-off events. For 164740/164779 co-relation queries the response was YES. Maximal size of possible extension queue 3821. Compared 481227 event pairs, 31779 based on Foata normal form. 1308/51100 useless extension candidates. Maximal degree in co-relation 223411. Up to 58370 conditions per place. [2023-08-30 15:31:55,763 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 83 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 15:31:55,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 562 flow [2023-08-30 15:31:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:31:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:31:55,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-30 15:31:55,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-08-30 15:31:55,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-30 15:31:55,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-30 15:31:55,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:31:55,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-30 15:31:55,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:31:55,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:55,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:31:55,768 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 236 flow. Second operand 3 states and 517 transitions. [2023-08-30 15:31:55,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 562 flow [2023-08-30 15:31:55,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 538 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 15:31:55,885 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 234 flow [2023-08-30 15:31:55,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-08-30 15:31:55,885 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-30 15:31:55,886 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 234 flow [2023-08-30 15:31:55,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:31:55,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:31:55,886 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:31:55,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:31:55,886 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:31:55,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:31:55,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1364116737, now seen corresponding path program 1 times [2023-08-30 15:31:55,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:31:55,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330605540] [2023-08-30 15:31:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:55,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:31:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:31:55,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:31:55,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330605540] [2023-08-30 15:31:55,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330605540] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:31:55,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600618327] [2023-08-30 15:31:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:31:55,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:31:55,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:31:55,935 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 15:31:55,937 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 15:31:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:31:56,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:31:56,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:31:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:31:56,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:31:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:31:56,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600618327] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:31:56,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:31:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2023-08-30 15:31:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459714621] [2023-08-30 15:31:56,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:31:56,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 15:31:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:31:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 15:31:56,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-08-30 15:31:56,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:31:56,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 234 flow. Second operand has 18 states, 18 states have (on average 142.5) internal successors, (2565), 18 states have internal predecessors, (2565), 0 states have call successors, (0), 0 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 15:31:56,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:31:56,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:31:56,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:32:01,223 INFO L130 PetriNetUnfolder]: 50781/65812 cut-off events. [2023-08-30 15:32:01,223 INFO L131 PetriNetUnfolder]: For 104034/104041 co-relation queries the response was YES. [2023-08-30 15:32:01,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180418 conditions, 65812 events. 50781/65812 cut-off events. For 104034/104041 co-relation queries the response was YES. Maximal size of possible extension queue 3057. Compared 409413 event pairs, 6276 based on Foata normal form. 3556/47432 useless extension candidates. Maximal degree in co-relation 180396. Up to 8372 conditions per place. [2023-08-30 15:32:01,596 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 412 selfloop transitions, 21 changer transitions 0/434 dead transitions. [2023-08-30 15:32:01,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 434 transitions, 2243 flow [2023-08-30 15:32:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 15:32:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 15:32:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3530 transitions. [2023-08-30 15:32:01,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487703785576126 [2023-08-30 15:32:01,602 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3530 transitions. [2023-08-30 15:32:01,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3530 transitions. [2023-08-30 15:32:01,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:32:01,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3530 transitions. [2023-08-30 15:32:01,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 160.45454545454547) internal successors, (3530), 22 states have internal predecessors, (3530), 0 states have call successors, (0), 0 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 15:32:01,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 329.0) internal successors, (7567), 23 states have internal predecessors, (7567), 0 states have call successors, (0), 0 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 15:32:01,616 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 329.0) internal successors, (7567), 23 states have internal predecessors, (7567), 0 states have call successors, (0), 0 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 15:32:01,616 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 234 flow. Second operand 22 states and 3530 transitions. [2023-08-30 15:32:01,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 434 transitions, 2243 flow [2023-08-30 15:32:02,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 434 transitions, 2191 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 15:32:02,105 INFO L231 Difference]: Finished difference. Result has 94 places, 57 transitions, 320 flow [2023-08-30 15:32:02,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=320, PETRI_PLACES=94, PETRI_TRANSITIONS=57} [2023-08-30 15:32:02,105 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2023-08-30 15:32:02,105 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 57 transitions, 320 flow [2023-08-30 15:32:02,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 142.5) internal successors, (2565), 18 states have internal predecessors, (2565), 0 states have call successors, (0), 0 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 15:32:02,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:32:02,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:32:02,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:32:02,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:32:02,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:32:02,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:32:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash 656148694, now seen corresponding path program 1 times [2023-08-30 15:32:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:32:02,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163048600] [2023-08-30 15:32:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:02,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:32:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:32:02,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:32:02,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163048600] [2023-08-30 15:32:02,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163048600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:32:02,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:32:02,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:32:02,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018625834] [2023-08-30 15:32:02,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:32:02,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:32:02,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:32:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:32:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:32:02,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:32:02,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 57 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:32:02,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:32:02,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:32:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:32:07,920 INFO L130 PetriNetUnfolder]: 64549/87410 cut-off events. [2023-08-30 15:32:07,920 INFO L131 PetriNetUnfolder]: For 233846/233846 co-relation queries the response was YES. [2023-08-30 15:32:08,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252923 conditions, 87410 events. 64549/87410 cut-off events. For 233846/233846 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 539374 event pairs, 36946 based on Foata normal form. 1016/65540 useless extension candidates. Maximal degree in co-relation 252895. Up to 57203 conditions per place. [2023-08-30 15:32:08,467 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 95 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-08-30 15:32:08,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 731 flow [2023-08-30 15:32:08,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:32:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:32:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-30 15:32:08,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2023-08-30 15:32:08,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-30 15:32:08,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-30 15:32:08,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:32:08,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-30 15:32:08,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 15:32:08,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:32:08,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:32:08,471 INFO L175 Difference]: Start difference. First operand has 94 places, 57 transitions, 320 flow. Second operand 3 states and 516 transitions. [2023-08-30 15:32:08,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 731 flow [2023-08-30 15:32:08,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 97 transitions, 679 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-30 15:32:08,814 INFO L231 Difference]: Finished difference. Result has 89 places, 58 transitions, 301 flow [2023-08-30 15:32:08,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=86, 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=301, PETRI_PLACES=89, PETRI_TRANSITIONS=58} [2023-08-30 15:32:08,814 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2023-08-30 15:32:08,814 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 58 transitions, 301 flow [2023-08-30 15:32:08,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:32:08,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:32:08,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:32:08,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:32:08,815 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:32:08,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:32:08,815 INFO L85 PathProgramCache]: Analyzing trace with hash 656148620, now seen corresponding path program 1 times [2023-08-30 15:32:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:32:08,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143455062] [2023-08-30 15:32:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:32:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:09,055 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 15:32:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:32:09,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143455062] [2023-08-30 15:32:09,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143455062] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:32:09,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577260958] [2023-08-30 15:32:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:09,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:32:09,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:32:09,057 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 15:32:09,058 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 15:32:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:09,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 15:32:09,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:32:09,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:32:09,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:09,219 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 14 treesize of output 16 [2023-08-30 15:32:09,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:09,248 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 14 treesize of output 16 [2023-08-30 15:32:09,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:09,271 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 14 treesize of output 16 [2023-08-30 15:32:09,287 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 15:32:09,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:32:09,356 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_438 (Array Int Int)) (v_ArrVal_439 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_438) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_439) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2023-08-30 15:32:09,403 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:32:09,403 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 28 treesize of output 29 [2023-08-30 15:32:09,413 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:32:09,413 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 245 treesize of output 237 [2023-08-30 15:32:09,438 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 15:32:09,455 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 53 treesize of output 49 [2023-08-30 15:32:09,459 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 49 treesize of output 47 [2023-08-30 15:32:09,505 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 15:32:09,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577260958] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:32:09,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:32:09,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 15:32:09,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354925532] [2023-08-30 15:32:09,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:32:09,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 15:32:09,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:32:09,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 15:32:09,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=239, Unknown=6, NotChecked=32, Total=342 [2023-08-30 15:32:09,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 15:32:09,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 58 transitions, 301 flow. Second operand has 19 states, 19 states have (on average 118.52631578947368) internal successors, (2252), 19 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 15:32:09,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:32:09,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 15:32:09,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:32:16,137 INFO L130 PetriNetUnfolder]: 70875/97186 cut-off events. [2023-08-30 15:32:16,137 INFO L131 PetriNetUnfolder]: For 220528/220528 co-relation queries the response was YES. [2023-08-30 15:32:16,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291506 conditions, 97186 events. 70875/97186 cut-off events. For 220528/220528 co-relation queries the response was YES. Maximal size of possible extension queue 3038. Compared 620661 event pairs, 20864 based on Foata normal form. 0/77944 useless extension candidates. Maximal degree in co-relation 291477. Up to 76327 conditions per place. [2023-08-30 15:32:16,937 INFO L137 encePairwiseOnDemand]: 320/329 looper letters, 166 selfloop transitions, 14 changer transitions 0/180 dead transitions. [2023-08-30 15:32:16,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 180 transitions, 1393 flow [2023-08-30 15:32:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:32:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:32:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1036 transitions. [2023-08-30 15:32:16,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39361702127659576 [2023-08-30 15:32:16,940 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1036 transitions. [2023-08-30 15:32:16,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1036 transitions. [2023-08-30 15:32:16,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:32:16,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1036 transitions. [2023-08-30 15:32:16,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.5) internal successors, (1036), 8 states have internal predecessors, (1036), 0 states have call successors, (0), 0 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 15:32:16,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 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 15:32:16,944 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 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 15:32:16,945 INFO L175 Difference]: Start difference. First operand has 89 places, 58 transitions, 301 flow. Second operand 8 states and 1036 transitions. [2023-08-30 15:32:16,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 180 transitions, 1393 flow [2023-08-30 15:32:17,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 180 transitions, 1389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:32:17,222 INFO L231 Difference]: Finished difference. Result has 97 places, 64 transitions, 384 flow [2023-08-30 15:32:17,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=97, PETRI_TRANSITIONS=64} [2023-08-30 15:32:17,223 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2023-08-30 15:32:17,223 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 64 transitions, 384 flow [2023-08-30 15:32:17,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 118.52631578947368) internal successors, (2252), 19 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 15:32:17,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:32:17,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:32:17,230 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 15:32:17,428 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 15:32:17,429 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:32:17,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:32:17,429 INFO L85 PathProgramCache]: Analyzing trace with hash 651333432, now seen corresponding path program 1 times [2023-08-30 15:32:17,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:32:17,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478116918] [2023-08-30 15:32:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:17,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:32:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:32:17,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:32:17,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478116918] [2023-08-30 15:32:17,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478116918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:32:17,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:32:17,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:32:17,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327179617] [2023-08-30 15:32:17,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:32:17,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:32:17,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:32:17,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:32:17,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:32:17,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:32:17,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 64 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:32:17,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:32:17,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:32:17,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:32:23,433 INFO L130 PetriNetUnfolder]: 64013/86660 cut-off events. [2023-08-30 15:32:23,433 INFO L131 PetriNetUnfolder]: For 243561/248929 co-relation queries the response was YES. [2023-08-30 15:32:23,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270971 conditions, 86660 events. 64013/86660 cut-off events. For 243561/248929 co-relation queries the response was YES. Maximal size of possible extension queue 3357. Compared 576974 event pairs, 12932 based on Foata normal form. 5368/84458 useless extension candidates. Maximal degree in co-relation 270939. Up to 65563 conditions per place. [2023-08-30 15:32:24,011 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 99 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-08-30 15:32:24,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 102 transitions, 825 flow [2023-08-30 15:32:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:32:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:32:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-08-30 15:32:24,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2023-08-30 15:32:24,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-08-30 15:32:24,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-08-30 15:32:24,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:32:24,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-08-30 15:32:24,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 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 15:32:24,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:32:24,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:32:24,015 INFO L175 Difference]: Start difference. First operand has 97 places, 64 transitions, 384 flow. Second operand 3 states and 507 transitions. [2023-08-30 15:32:24,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 102 transitions, 825 flow [2023-08-30 15:32:24,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 819 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 15:32:24,343 INFO L231 Difference]: Finished difference. Result has 96 places, 63 transitions, 376 flow [2023-08-30 15:32:24,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=96, PETRI_TRANSITIONS=63} [2023-08-30 15:32:24,344 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2023-08-30 15:32:24,344 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 63 transitions, 376 flow [2023-08-30 15:32:24,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:32:24,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:32:24,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:32:24,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:32:24,345 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:32:24,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:32:24,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1134089444, now seen corresponding path program 1 times [2023-08-30 15:32:24,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:32:24,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586294267] [2023-08-30 15:32:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:24,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:32:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:32:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:32:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586294267] [2023-08-30 15:32:24,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586294267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:32:24,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:32:24,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:32:24,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584630765] [2023-08-30 15:32:24,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:32:24,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:32:24,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:32:24,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:32:24,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:32:24,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 329 [2023-08-30 15:32:24,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 63 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 15:32:24,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:32:24,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 329 [2023-08-30 15:32:24,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:32:30,257 INFO L130 PetriNetUnfolder]: 62024/83948 cut-off events. [2023-08-30 15:32:30,257 INFO L131 PetriNetUnfolder]: For 251719/257051 co-relation queries the response was YES. [2023-08-30 15:32:30,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267124 conditions, 83948 events. 62024/83948 cut-off events. For 251719/257051 co-relation queries the response was YES. Maximal size of possible extension queue 3207. Compared 557500 event pairs, 8326 based on Foata normal form. 5332/82625 useless extension candidates. Maximal degree in co-relation 267093. Up to 77566 conditions per place. [2023-08-30 15:32:30,853 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 97 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-08-30 15:32:30,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 817 flow [2023-08-30 15:32:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:32:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:32:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-30 15:32:30,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157041540020263 [2023-08-30 15:32:30,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-30 15:32:30,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-30 15:32:30,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:32:30,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-30 15:32:30,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 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 15:32:30,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:32:30,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:32:30,857 INFO L175 Difference]: Start difference. First operand has 96 places, 63 transitions, 376 flow. Second operand 3 states and 509 transitions. [2023-08-30 15:32:30,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 817 flow [2023-08-30 15:32:33,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 816 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:32:33,618 INFO L231 Difference]: Finished difference. Result has 98 places, 63 transitions, 383 flow [2023-08-30 15:32:33,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=98, PETRI_TRANSITIONS=63} [2023-08-30 15:32:33,618 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 48 predicate places. [2023-08-30 15:32:33,618 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 63 transitions, 383 flow [2023-08-30 15:32:33,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 15:32:33,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:32:33,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:32:33,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:32:33,619 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:32:33,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:32:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash -801421526, now seen corresponding path program 1 times [2023-08-30 15:32:33,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:32:33,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585535281] [2023-08-30 15:32:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:33,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:32:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:33,888 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 15:32:33,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:32:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585535281] [2023-08-30 15:32:33,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585535281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:32:33,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078442915] [2023-08-30 15:32:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:33,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:32:33,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:32:33,890 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 15:32:33,894 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 15:32:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:33,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 15:32:33,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:32:34,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:32:34,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:34,175 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 14 treesize of output 16 [2023-08-30 15:32:34,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:34,205 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 14 treesize of output 16 [2023-08-30 15:32:34,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:34,229 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 14 treesize of output 16 [2023-08-30 15:32:34,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:34,269 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 14 treesize of output 16 [2023-08-30 15:32:34,280 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 15:32:34,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:32:34,294 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_561 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_561) c_~A~0.base) (+ c_~A~0.offset (* |c_thread3Thread1of1ForFork1_~i~2#1| 4))) 2147483649)) is different from false [2023-08-30 15:32:34,301 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_561 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_561) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2023-08-30 15:32:34,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:32:34,392 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 31 treesize of output 32 [2023-08-30 15:32:34,402 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:32:34,403 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 7745 treesize of output 7617 [2023-08-30 15:32:34,443 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 113 treesize of output 109 [2023-08-30 15:32:34,449 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 109 treesize of output 107 [2023-08-30 15:32:34,454 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 222 treesize of output 206 [2023-08-30 15:32:34,460 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 106 treesize of output 98 [2023-08-30 15:32:34,577 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 15:32:34,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078442915] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:32:34,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:32:34,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-08-30 15:32:34,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360087897] [2023-08-30 15:32:34,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:32:34,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 15:32:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:32:34,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 15:32:34,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=338, Unknown=10, NotChecked=78, Total=506 [2023-08-30 15:32:34,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 15:32:34,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 63 transitions, 383 flow. Second operand has 23 states, 23 states have (on average 115.56521739130434) internal successors, (2658), 23 states have internal predecessors, (2658), 0 states have call successors, (0), 0 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 15:32:34,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:32:34,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 15:32:34,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:32:39,914 INFO L130 PetriNetUnfolder]: 53451/73704 cut-off events. [2023-08-30 15:32:39,914 INFO L131 PetriNetUnfolder]: For 202100/202100 co-relation queries the response was YES. [2023-08-30 15:32:40,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248100 conditions, 73704 events. 53451/73704 cut-off events. For 202100/202100 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 460927 event pairs, 21142 based on Foata normal form. 1948/74568 useless extension candidates. Maximal degree in co-relation 248067. Up to 34948 conditions per place. [2023-08-30 15:32:40,400 INFO L137 encePairwiseOnDemand]: 321/329 looper letters, 119 selfloop transitions, 13 changer transitions 0/132 dead transitions. [2023-08-30 15:32:40,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 132 transitions, 1028 flow [2023-08-30 15:32:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:32:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:32:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 877 transitions. [2023-08-30 15:32:40,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3808076422058185 [2023-08-30 15:32:40,402 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 877 transitions. [2023-08-30 15:32:40,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 877 transitions. [2023-08-30 15:32:40,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:32:40,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 877 transitions. [2023-08-30 15:32:40,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.28571428571429) internal successors, (877), 7 states have internal predecessors, (877), 0 states have call successors, (0), 0 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 15:32:40,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 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 15:32:40,405 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 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 15:32:40,405 INFO L175 Difference]: Start difference. First operand has 98 places, 63 transitions, 383 flow. Second operand 7 states and 877 transitions. [2023-08-30 15:32:40,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 132 transitions, 1028 flow [2023-08-30 15:32:40,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1020 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:32:40,632 INFO L231 Difference]: Finished difference. Result has 103 places, 63 transitions, 411 flow [2023-08-30 15:32:40,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=103, PETRI_TRANSITIONS=63} [2023-08-30 15:32:40,632 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 53 predicate places. [2023-08-30 15:32:40,632 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 63 transitions, 411 flow [2023-08-30 15:32:40,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.56521739130434) internal successors, (2658), 23 states have internal predecessors, (2658), 0 states have call successors, (0), 0 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 15:32:40,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:32:40,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:32:40,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 15:32:40,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:32:40,833 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:32:40,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:32:40,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1134225228, now seen corresponding path program 1 times [2023-08-30 15:32:40,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:32:40,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662619273] [2023-08-30 15:32:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:40,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:32:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:32:40,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:32:40,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662619273] [2023-08-30 15:32:40,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662619273] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:32:40,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208416352] [2023-08-30 15:32:40,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:40,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:32:40,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:32:40,874 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 15:32:40,876 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 15:32:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:40,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:32:40,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:32:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:32:41,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:32:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:32:41,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208416352] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:32:41,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:32:41,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 15:32:41,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027792753] [2023-08-30 15:32:41,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:32:41,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:32:41,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:32:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:32:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:32:41,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:32:41,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 63 transitions, 411 flow. Second operand has 13 states, 13 states have (on average 143.15384615384616) internal successors, (1861), 13 states have internal predecessors, (1861), 0 states have call successors, (0), 0 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 15:32:41,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:32:41,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:32:41,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:32:45,402 INFO L130 PetriNetUnfolder]: 42013/57792 cut-off events. [2023-08-30 15:32:45,402 INFO L131 PetriNetUnfolder]: For 169711/169711 co-relation queries the response was YES. [2023-08-30 15:32:45,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201638 conditions, 57792 events. 42013/57792 cut-off events. For 169711/169711 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 353095 event pairs, 4998 based on Foata normal form. 3018/60036 useless extension candidates. Maximal degree in co-relation 201604. Up to 23608 conditions per place. [2023-08-30 15:32:45,760 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 249 selfloop transitions, 15 changer transitions 4/268 dead transitions. [2023-08-30 15:32:45,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 268 transitions, 1890 flow [2023-08-30 15:32:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:32:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:32:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1894 transitions. [2023-08-30 15:32:45,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797365754812563 [2023-08-30 15:32:45,763 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1894 transitions. [2023-08-30 15:32:45,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1894 transitions. [2023-08-30 15:32:45,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:32:45,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1894 transitions. [2023-08-30 15:32:45,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 157.83333333333334) internal successors, (1894), 12 states have internal predecessors, (1894), 0 states have call successors, (0), 0 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 15:32:45,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 0 states have call successors, (0), 0 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 15:32:45,769 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 0 states have call successors, (0), 0 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 15:32:45,769 INFO L175 Difference]: Start difference. First operand has 103 places, 63 transitions, 411 flow. Second operand 12 states and 1894 transitions. [2023-08-30 15:32:45,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 268 transitions, 1890 flow [2023-08-30 15:32:45,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 268 transitions, 1873 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 15:32:45,967 INFO L231 Difference]: Finished difference. Result has 111 places, 68 transitions, 466 flow [2023-08-30 15:32:45,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=111, PETRI_TRANSITIONS=68} [2023-08-30 15:32:45,967 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 61 predicate places. [2023-08-30 15:32:45,967 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 68 transitions, 466 flow [2023-08-30 15:32:45,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 143.15384615384616) internal successors, (1861), 13 states have internal predecessors, (1861), 0 states have call successors, (0), 0 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 15:32:45,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:32:45,968 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:32:45,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 15:32:46,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:32:46,172 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:32:46,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:32:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash 751289635, now seen corresponding path program 2 times [2023-08-30 15:32:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:32:46,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657042743] [2023-08-30 15:32:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:32:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:32:46,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:32:46,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657042743] [2023-08-30 15:32:46,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657042743] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:32:46,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150152360] [2023-08-30 15:32:46,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:32:46,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:32:46,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:32:46,212 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 15:32:46,217 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 15:32:46,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:32:46,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:32:46,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:32:46,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:32:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-30 15:32:46,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:32:46,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150152360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:32:46,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:32:46,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 15:32:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788715023] [2023-08-30 15:32:46,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:32:46,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:32:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:32:46,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:32:46,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:32:46,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:32:46,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 68 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 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 15:32:46,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:32:46,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:32:46,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:32:49,342 INFO L130 PetriNetUnfolder]: 30954/42113 cut-off events. [2023-08-30 15:32:49,342 INFO L131 PetriNetUnfolder]: For 213802/217151 co-relation queries the response was YES. [2023-08-30 15:32:49,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139744 conditions, 42113 events. 30954/42113 cut-off events. For 213802/217151 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 245332 event pairs, 23168 based on Foata normal form. 5021/46847 useless extension candidates. Maximal degree in co-relation 139708. Up to 42010 conditions per place. [2023-08-30 15:32:49,581 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 58 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-30 15:32:49,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 63 transitions, 485 flow [2023-08-30 15:32:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:32:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:32:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-30 15:32:49,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2023-08-30 15:32:49,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-30 15:32:49,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-30 15:32:49,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:32:49,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-30 15:32:49,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 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 15:32:49,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:32:49,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:32:49,586 INFO L175 Difference]: Start difference. First operand has 111 places, 68 transitions, 466 flow. Second operand 3 states and 486 transitions. [2023-08-30 15:32:49,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 63 transitions, 485 flow [2023-08-30 15:32:49,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 63 transitions, 431 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-08-30 15:32:49,688 INFO L231 Difference]: Finished difference. Result has 93 places, 63 transitions, 315 flow [2023-08-30 15:32:49,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=93, PETRI_TRANSITIONS=63} [2023-08-30 15:32:49,688 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-08-30 15:32:49,688 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 63 transitions, 315 flow [2023-08-30 15:32:49,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 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 15:32:49,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:32:49,689 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:32:49,695 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 15:32:49,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 15:32:49,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:32:49,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:32:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1342970954, now seen corresponding path program 1 times [2023-08-30 15:32:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:32:49,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539293812] [2023-08-30 15:32:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:49,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:32:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:50,253 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 15:32:50,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:32:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539293812] [2023-08-30 15:32:50,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539293812] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:32:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571434211] [2023-08-30 15:32:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:50,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:32:50,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:32:50,255 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 15:32:50,257 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 15:32:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:50,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 15:32:50,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:32:50,392 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 15:32:50,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:50,427 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 15:32:50,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:50,454 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 15:32:50,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:50,480 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 15:32:50,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 20 [2023-08-30 15:32:50,533 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 15:32:50,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:32:50,605 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_749 (Array Int Int)) (v_ArrVal_750 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_749) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_750) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2023-08-30 15:32:50,645 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:32:50,645 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 30 treesize of output 31 [2023-08-30 15:32:50,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:32:50,651 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 553 treesize of output 529 [2023-08-30 15:32:50,661 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 59 treesize of output 55 [2023-08-30 15:32:50,664 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 118 treesize of output 102 [2023-08-30 15:32:50,669 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 15:32:50,756 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 15:32:50,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571434211] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:32:50,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:32:50,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-30 15:32:50,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330884359] [2023-08-30 15:32:50,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:32:50,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 15:32:50,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:32:50,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 15:32:50,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=509, Unknown=9, NotChecked=46, Total=650 [2023-08-30 15:32:50,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 15:32:50,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 63 transitions, 315 flow. Second operand has 26 states, 26 states have (on average 118.38461538461539) internal successors, (3078), 26 states have internal predecessors, (3078), 0 states have call successors, (0), 0 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 15:32:50,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:32:50,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 15:32:50,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:32:54,100 INFO L130 PetriNetUnfolder]: 32833/44762 cut-off events. [2023-08-30 15:32:54,100 INFO L131 PetriNetUnfolder]: For 60437/60437 co-relation queries the response was YES. [2023-08-30 15:32:54,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139144 conditions, 44762 events. 32833/44762 cut-off events. For 60437/60437 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 248140 event pairs, 12406 based on Foata normal form. 144/44906 useless extension candidates. Maximal degree in co-relation 139117. Up to 33457 conditions per place. [2023-08-30 15:32:54,351 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 138 selfloop transitions, 11 changer transitions 1/150 dead transitions. [2023-08-30 15:32:54,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 150 transitions, 1002 flow [2023-08-30 15:32:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:32:54,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:32:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-08-30 15:32:54,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39209726443769 [2023-08-30 15:32:54,353 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-08-30 15:32:54,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-08-30 15:32:54,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:32:54,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-08-30 15:32:54,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 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 15:32:54,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 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 15:32:54,357 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 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 15:32:54,357 INFO L175 Difference]: Start difference. First operand has 93 places, 63 transitions, 315 flow. Second operand 8 states and 1032 transitions. [2023-08-30 15:32:54,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 150 transitions, 1002 flow [2023-08-30 15:32:54,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 150 transitions, 1001 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:32:54,433 INFO L231 Difference]: Finished difference. Result has 101 places, 67 transitions, 368 flow [2023-08-30 15:32:54,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=368, PETRI_PLACES=101, PETRI_TRANSITIONS=67} [2023-08-30 15:32:54,433 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 51 predicate places. [2023-08-30 15:32:54,433 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 67 transitions, 368 flow [2023-08-30 15:32:54,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 118.38461538461539) internal successors, (3078), 26 states have internal predecessors, (3078), 0 states have call successors, (0), 0 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 15:32:54,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:32:54,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:32:54,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:32:54,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 15:32:54,638 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:32:54,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:32:54,638 INFO L85 PathProgramCache]: Analyzing trace with hash -837495404, now seen corresponding path program 1 times [2023-08-30 15:32:54,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:32:54,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578146522] [2023-08-30 15:32:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:54,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:32:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:32:54,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:32:54,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578146522] [2023-08-30 15:32:54,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578146522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:32:54,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:32:54,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:32:54,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107054634] [2023-08-30 15:32:54,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:32:54,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:32:54,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:32:54,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:32:54,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:32:54,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:32:54,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 67 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 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 15:32:54,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:32:54,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:32:54,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:32:57,586 INFO L130 PetriNetUnfolder]: 31183/42344 cut-off events. [2023-08-30 15:32:57,586 INFO L131 PetriNetUnfolder]: For 63779/66791 co-relation queries the response was YES. [2023-08-30 15:32:57,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137938 conditions, 42344 events. 31183/42344 cut-off events. For 63779/66791 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 250938 event pairs, 5854 based on Foata normal form. 3412/45660 useless extension candidates. Maximal degree in co-relation 137908. Up to 36843 conditions per place. [2023-08-30 15:32:57,785 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 87 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-08-30 15:32:57,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 693 flow [2023-08-30 15:32:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:32:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:32:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 15:32:57,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055724417426545 [2023-08-30 15:32:57,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 15:32:57,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 15:32:57,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:32:57,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 15:32:57,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 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 15:32:57,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:32:57,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:32:57,788 INFO L175 Difference]: Start difference. First operand has 101 places, 67 transitions, 368 flow. Second operand 3 states and 499 transitions. [2023-08-30 15:32:57,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 693 flow [2023-08-30 15:32:58,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 667 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 15:32:58,029 INFO L231 Difference]: Finished difference. Result has 100 places, 67 transitions, 363 flow [2023-08-30 15:32:58,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=100, PETRI_TRANSITIONS=67} [2023-08-30 15:32:58,029 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 50 predicate places. [2023-08-30 15:32:58,030 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 67 transitions, 363 flow [2023-08-30 15:32:58,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 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 15:32:58,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:32:58,030 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:32:58,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 15:32:58,030 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:32:58,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:32:58,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1313383312, now seen corresponding path program 1 times [2023-08-30 15:32:58,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:32:58,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201205931] [2023-08-30 15:32:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:58,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:32:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:58,342 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 15:32:58,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:32:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201205931] [2023-08-30 15:32:58,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201205931] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:32:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506556267] [2023-08-30 15:32:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:32:58,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:32:58,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:32:58,344 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:32:58,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 15:32:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:32:58,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-30 15:32:58,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:32:58,492 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 15:32:58,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:58,532 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 15:32:58,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:58,576 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 15:32:58,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:58,606 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 15:32:58,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:32:58,629 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 15:32:58,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 20 [2023-08-30 15:32:58,677 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 15:32:58,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:32:58,797 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_856 (Array Int Int)) (v_ArrVal_855 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_855) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_856) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2023-08-30 15:32:58,807 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_853 (Array Int Int)) (v_ArrVal_856 (Array Int Int)) (v_ArrVal_855 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_853) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_855) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_856) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649)) is different from false [2023-08-30 15:32:58,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:32:58,815 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 33 treesize of output 34 [2023-08-30 15:32:58,822 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:32:58,822 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 1097 treesize of output 1073 [2023-08-30 15:32:58,841 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 258 treesize of output 242 [2023-08-30 15:32:58,849 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 242 treesize of output 210 [2023-08-30 15:32:58,858 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 103 treesize of output 99 [2023-08-30 15:32:58,864 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 106 treesize of output 98 [2023-08-30 15:32:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-30 15:32:59,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506556267] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:32:59,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:32:59,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-30 15:32:59,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160215549] [2023-08-30 15:32:59,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:32:59,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 15:32:59,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:32:59,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 15:32:59,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=590, Unknown=15, NotChecked=102, Total=812 [2023-08-30 15:32:59,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 15:32:59,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 67 transitions, 363 flow. Second operand has 29 states, 29 states have (on average 115.34482758620689) internal successors, (3345), 29 states have internal predecessors, (3345), 0 states have call successors, (0), 0 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 15:32:59,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:32:59,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 15:32:59,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:03,274 INFO L130 PetriNetUnfolder]: 38795/53000 cut-off events. [2023-08-30 15:33:03,275 INFO L131 PetriNetUnfolder]: For 92979/92979 co-relation queries the response was YES. [2023-08-30 15:33:03,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174833 conditions, 53000 events. 38795/53000 cut-off events. For 92979/92979 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 309926 event pairs, 16918 based on Foata normal form. 1314/54314 useless extension candidates. Maximal degree in co-relation 174803. Up to 23628 conditions per place. [2023-08-30 15:33:03,562 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 136 selfloop transitions, 11 changer transitions 1/148 dead transitions. [2023-08-30 15:33:03,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 148 transitions, 993 flow [2023-08-30 15:33:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:33:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:33:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1016 transitions. [2023-08-30 15:33:03,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860182370820669 [2023-08-30 15:33:03,563 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1016 transitions. [2023-08-30 15:33:03,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1016 transitions. [2023-08-30 15:33:03,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:03,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1016 transitions. [2023-08-30 15:33:03,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 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 15:33:03,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 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 15:33:03,567 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 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 15:33:03,567 INFO L175 Difference]: Start difference. First operand has 100 places, 67 transitions, 363 flow. Second operand 8 states and 1016 transitions. [2023-08-30 15:33:03,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 148 transitions, 993 flow [2023-08-30 15:33:03,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 148 transitions, 977 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:33:03,772 INFO L231 Difference]: Finished difference. Result has 106 places, 68 transitions, 393 flow [2023-08-30 15:33:03,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=393, PETRI_PLACES=106, PETRI_TRANSITIONS=68} [2023-08-30 15:33:03,773 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 56 predicate places. [2023-08-30 15:33:03,773 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 68 transitions, 393 flow [2023-08-30 15:33:03,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 115.34482758620689) internal successors, (3345), 29 states have internal predecessors, (3345), 0 states have call successors, (0), 0 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 15:33:03,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:03,774 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:33:03,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 15:33:03,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:03,978 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:03,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:03,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1317569428, now seen corresponding path program 2 times [2023-08-30 15:33:03,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:03,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65673789] [2023-08-30 15:33:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:03,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:04,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:33:04,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65673789] [2023-08-30 15:33:04,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65673789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:33:04,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889170229] [2023-08-30 15:33:04,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:33:04,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:04,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:33:04,053 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:33:04,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 15:33:04,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:33:04,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:33:04,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:33:04,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:33:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:04,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:33:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:04,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889170229] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:33:04,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:33:04,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-30 15:33:04,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187362011] [2023-08-30 15:33:04,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:33:04,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 15:33:04,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:33:04,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 15:33:04,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-08-30 15:33:04,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:33:04,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 68 transitions, 393 flow. Second operand has 19 states, 19 states have (on average 142.42105263157896) internal successors, (2706), 19 states have internal predecessors, (2706), 0 states have call successors, (0), 0 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 15:33:04,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:33:04,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:33:04,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:08,309 INFO L130 PetriNetUnfolder]: 36951/50670 cut-off events. [2023-08-30 15:33:08,309 INFO L131 PetriNetUnfolder]: For 101092/101092 co-relation queries the response was YES. [2023-08-30 15:33:08,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172687 conditions, 50670 events. 36951/50670 cut-off events. For 101092/101092 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 296843 event pairs, 12896 based on Foata normal form. 972/51642 useless extension candidates. Maximal degree in co-relation 172656. Up to 19548 conditions per place. [2023-08-30 15:33:08,609 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 296 selfloop transitions, 22 changer transitions 12/330 dead transitions. [2023-08-30 15:33:08,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 330 transitions, 2066 flow [2023-08-30 15:33:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 15:33:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 15:33:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2669 transitions. [2023-08-30 15:33:08,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2023-08-30 15:33:08,611 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2669 transitions. [2023-08-30 15:33:08,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2669 transitions. [2023-08-30 15:33:08,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:08,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2669 transitions. [2023-08-30 15:33:08,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 157.0) internal successors, (2669), 17 states have internal predecessors, (2669), 0 states have call successors, (0), 0 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 15:33:08,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 329.0) internal successors, (5922), 18 states have internal predecessors, (5922), 0 states have call successors, (0), 0 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 15:33:08,618 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 329.0) internal successors, (5922), 18 states have internal predecessors, (5922), 0 states have call successors, (0), 0 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 15:33:08,618 INFO L175 Difference]: Start difference. First operand has 106 places, 68 transitions, 393 flow. Second operand 17 states and 2669 transitions. [2023-08-30 15:33:08,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 330 transitions, 2066 flow [2023-08-30 15:33:09,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 330 transitions, 2038 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 15:33:09,824 INFO L231 Difference]: Finished difference. Result has 121 places, 77 transitions, 522 flow [2023-08-30 15:33:09,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=522, PETRI_PLACES=121, PETRI_TRANSITIONS=77} [2023-08-30 15:33:09,825 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 71 predicate places. [2023-08-30 15:33:09,825 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 77 transitions, 522 flow [2023-08-30 15:33:09,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 142.42105263157896) internal successors, (2706), 19 states have internal predecessors, (2706), 0 states have call successors, (0), 0 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 15:33:09,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:09,826 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:33:09,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 15:33:10,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:10,032 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:10,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash -143849396, now seen corresponding path program 3 times [2023-08-30 15:33:10,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:10,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801546339] [2023-08-30 15:33:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:10,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:10,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:33:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801546339] [2023-08-30 15:33:10,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801546339] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:33:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742200865] [2023-08-30 15:33:10,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:33:10,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:10,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:33:10,523 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:33:10,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 15:33:10,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 15:33:10,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:33:10,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 15:33:10,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:33:10,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:33:10,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:33:10,820 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 14 treesize of output 16 [2023-08-30 15:33:10,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:33:10,847 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 14 treesize of output 16 [2023-08-30 15:33:10,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:33:10,875 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 14 treesize of output 16 [2023-08-30 15:33:10,888 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 19 treesize of output 18 [2023-08-30 15:33:10,909 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 19 treesize of output 18 [2023-08-30 15:33:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:10,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:33:11,077 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:33:11,078 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 30 treesize of output 31 [2023-08-30 15:33:11,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:33:11,083 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 139 treesize of output 133 [2023-08-30 15:33:11,090 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 122 treesize of output 114 [2023-08-30 15:33:11,093 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 114 treesize of output 98 [2023-08-30 15:33:11,096 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 46 [2023-08-30 15:33:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742200865] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:33:11,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:33:11,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-30 15:33:11,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271215427] [2023-08-30 15:33:11,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:33:11,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 15:33:11,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:33:11,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 15:33:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=754, Unknown=14, NotChecked=0, Total=870 [2023-08-30 15:33:11,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 15:33:11,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 77 transitions, 522 flow. Second operand has 30 states, 30 states have (on average 118.33333333333333) internal successors, (3550), 30 states have internal predecessors, (3550), 0 states have call successors, (0), 0 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 15:33:11,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:33:11,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 15:33:11,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:15,915 INFO L130 PetriNetUnfolder]: 37527/51438 cut-off events. [2023-08-30 15:33:15,916 INFO L131 PetriNetUnfolder]: For 125206/125206 co-relation queries the response was YES. [2023-08-30 15:33:16,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184050 conditions, 51438 events. 37527/51438 cut-off events. For 125206/125206 co-relation queries the response was YES. Maximal size of possible extension queue 1414. Compared 292814 event pairs, 21026 based on Foata normal form. 96/51534 useless extension candidates. Maximal degree in co-relation 184015. Up to 28489 conditions per place. [2023-08-30 15:33:16,227 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 167 selfloop transitions, 13 changer transitions 2/182 dead transitions. [2023-08-30 15:33:16,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 1342 flow [2023-08-30 15:33:16,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:33:16,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:33:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1306 transitions. [2023-08-30 15:33:16,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39696048632218844 [2023-08-30 15:33:16,229 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1306 transitions. [2023-08-30 15:33:16,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1306 transitions. [2023-08-30 15:33:16,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:16,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1306 transitions. [2023-08-30 15:33:16,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 130.6) internal successors, (1306), 10 states have internal predecessors, (1306), 0 states have call successors, (0), 0 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 15:33:16,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 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 15:33:16,232 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 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 15:33:16,232 INFO L175 Difference]: Start difference. First operand has 121 places, 77 transitions, 522 flow. Second operand 10 states and 1306 transitions. [2023-08-30 15:33:16,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 1342 flow [2023-08-30 15:33:16,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 182 transitions, 1318 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 15:33:16,756 INFO L231 Difference]: Finished difference. Result has 127 places, 82 transitions, 575 flow [2023-08-30 15:33:16,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=575, PETRI_PLACES=127, PETRI_TRANSITIONS=82} [2023-08-30 15:33:16,756 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2023-08-30 15:33:16,756 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 82 transitions, 575 flow [2023-08-30 15:33:16,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 118.33333333333333) internal successors, (3550), 30 states have internal predecessors, (3550), 0 states have call successors, (0), 0 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 15:33:16,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:16,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:33:16,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 15:33:16,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 15:33:16,957 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:16,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:16,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1381261288, now seen corresponding path program 1 times [2023-08-30 15:33:16,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:16,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36232100] [2023-08-30 15:33:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:16,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:33:16,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:33:16,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36232100] [2023-08-30 15:33:16,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36232100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:33:16,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:33:16,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:33:16,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587034630] [2023-08-30 15:33:16,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:33:16,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:33:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:33:16,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:33:16,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:33:16,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:33:16,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 82 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 15:33:16,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:33:16,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:33:16,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:20,461 INFO L130 PetriNetUnfolder]: 34153/47436 cut-off events. [2023-08-30 15:33:20,461 INFO L131 PetriNetUnfolder]: For 105970/106599 co-relation queries the response was YES. [2023-08-30 15:33:20,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168938 conditions, 47436 events. 34153/47436 cut-off events. For 105970/106599 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 291769 event pairs, 8228 based on Foata normal form. 1103/48515 useless extension candidates. Maximal degree in co-relation 168899. Up to 36707 conditions per place. [2023-08-30 15:33:20,789 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 128 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-08-30 15:33:20,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 136 transitions, 1215 flow [2023-08-30 15:33:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:33:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:33:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 15:33:20,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055724417426545 [2023-08-30 15:33:20,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 15:33:20,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 15:33:20,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:20,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 15:33:20,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 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 15:33:20,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:33:20,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 15:33:20,792 INFO L175 Difference]: Start difference. First operand has 127 places, 82 transitions, 575 flow. Second operand 3 states and 499 transitions. [2023-08-30 15:33:20,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 136 transitions, 1215 flow [2023-08-30 15:33:21,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 136 transitions, 1168 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-30 15:33:21,191 INFO L231 Difference]: Finished difference. Result has 125 places, 82 transitions, 552 flow [2023-08-30 15:33:21,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=552, PETRI_PLACES=125, PETRI_TRANSITIONS=82} [2023-08-30 15:33:21,191 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 75 predicate places. [2023-08-30 15:33:21,191 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 82 transitions, 552 flow [2023-08-30 15:33:21,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 15:33:21,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:21,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:33:21,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 15:33:21,191 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:21,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:21,192 INFO L85 PathProgramCache]: Analyzing trace with hash 130575952, now seen corresponding path program 1 times [2023-08-30 15:33:21,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:21,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835657784] [2023-08-30 15:33:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:21,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:21,374 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 15:33:21,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:33:21,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835657784] [2023-08-30 15:33:21,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835657784] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:33:21,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956000763] [2023-08-30 15:33:21,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:21,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:21,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:33:21,376 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:33:21,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 15:33:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:21,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 15:33:21,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:33:21,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:33:21,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:33:21,536 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 15:33:21,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:33:21,568 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 15:33:21,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:33:21,591 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 15:33:21,604 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 17 treesize of output 9 [2023-08-30 15:33:21,616 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 15:33:21,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:33:21,633 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1102 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1102) c_~A~0.base) c_~A~0.offset) 2147483650))) is different from false [2023-08-30 15:33:21,684 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:33:21,684 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 30 treesize of output 31 [2023-08-30 15:33:21,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:33:21,693 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 2211 treesize of output 2147 [2023-08-30 15:33:21,707 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 58 treesize of output 50 [2023-08-30 15:33:21,714 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 61 treesize of output 59 [2023-08-30 15:33:21,717 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 59 treesize of output 55 [2023-08-30 15:33:21,748 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 15:33:21,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956000763] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:33:21,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:33:21,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 15:33:21,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602654959] [2023-08-30 15:33:21,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:33:21,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 15:33:21,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:33:21,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 15:33:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=243, Unknown=5, NotChecked=32, Total=342 [2023-08-30 15:33:21,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 329 [2023-08-30 15:33:21,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 82 transitions, 552 flow. Second operand has 19 states, 19 states have (on average 123.10526315789474) internal successors, (2339), 19 states have internal predecessors, (2339), 0 states have call successors, (0), 0 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 15:33:21,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:33:21,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 329 [2023-08-30 15:33:21,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:27,148 INFO L130 PetriNetUnfolder]: 50837/70618 cut-off events. [2023-08-30 15:33:27,148 INFO L131 PetriNetUnfolder]: For 176144/179173 co-relation queries the response was YES. [2023-08-30 15:33:27,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255924 conditions, 70618 events. 50837/70618 cut-off events. For 176144/179173 co-relation queries the response was YES. Maximal size of possible extension queue 2398. Compared 452272 event pairs, 14730 based on Foata normal form. 5197/75560 useless extension candidates. Maximal degree in co-relation 255885. Up to 35085 conditions per place. [2023-08-30 15:33:27,646 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 136 selfloop transitions, 15 changer transitions 2/159 dead transitions. [2023-08-30 15:33:27,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 159 transitions, 1293 flow [2023-08-30 15:33:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:33:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:33:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 788 transitions. [2023-08-30 15:33:27,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39918946301925023 [2023-08-30 15:33:27,647 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 788 transitions. [2023-08-30 15:33:27,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 788 transitions. [2023-08-30 15:33:27,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:27,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 788 transitions. [2023-08-30 15:33:27,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 0 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 15:33:27,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 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 15:33:27,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 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 15:33:27,650 INFO L175 Difference]: Start difference. First operand has 125 places, 82 transitions, 552 flow. Second operand 6 states and 788 transitions. [2023-08-30 15:33:27,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 159 transitions, 1293 flow [2023-08-30 15:33:29,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 159 transitions, 1280 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 15:33:29,440 INFO L231 Difference]: Finished difference. Result has 128 places, 83 transitions, 590 flow [2023-08-30 15:33:29,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=590, PETRI_PLACES=128, PETRI_TRANSITIONS=83} [2023-08-30 15:33:29,440 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 78 predicate places. [2023-08-30 15:33:29,440 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 83 transitions, 590 flow [2023-08-30 15:33:29,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 123.10526315789474) internal successors, (2339), 19 states have internal predecessors, (2339), 0 states have call successors, (0), 0 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 15:33:29,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:29,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:33:29,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-30 15:33:29,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:29,645 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:29,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:29,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1384853932, now seen corresponding path program 2 times [2023-08-30 15:33:29,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:29,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117147853] [2023-08-30 15:33:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:29,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat