./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 AFTER --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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:39:45,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:39:45,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:39:45,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:39:45,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:39:45,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:39:45,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:39:45,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:39:45,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:39:45,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:39:45,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:39:45,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:39:45,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:39:45,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:39:45,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:39:45,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:39:45,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:39:45,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:39:45,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:39:45,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:39:45,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:39:45,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:39:45,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:39:45,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:39:45,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:39:45,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:39:45,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:39:45,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:39:45,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:39:45,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:39:45,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:39:45,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:39:45,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:39:45,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:39:45,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:39:45,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:39:45,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:39:45,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:39:45,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:39:45,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:39:45,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:39:45,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:39:45,425 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:39:45,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:39:45,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:39:45,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:39:45,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:39:45,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:39:45,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:39:45,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:39:45,429 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:39:45,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:39:45,430 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:39:45,430 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:39:45,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:39:45,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:39:45,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:39:45,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:39:45,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:39:45,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:39:45,431 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:39:45,432 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:39:45,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:39:45,432 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:39:45,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:39:45,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:39:45,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:39:45,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:39:45,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:39:45,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:39:45,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:39:45,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:39:45,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:39:45,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:39:45,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:39:45,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:39:45,435 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:39:45,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:39:45,435 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:39:45,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:39:45,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:39:45,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:39:45,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:39:45,774 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:39:45,774 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:39:45,776 INFO L432 ainManager$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 11:39:46,845 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:39:47,038 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:39:47,038 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-08-30 11:39:47,047 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18edb4554/9318108d942a4220b62535751630b1b7/FLAG1f1b01e01 [2023-08-30 11:39:47,062 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18edb4554/9318108d942a4220b62535751630b1b7 [2023-08-30 11:39:47,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:39:47,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:39:47,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:39:47,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:39:47,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:39:47,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472d7fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47, skipping insertion in model container [2023-08-30 11:39:47,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:39:47,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:39:47,246 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 11:39:47,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:39:47,259 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:39:47,281 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 11:39:47,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:39:47,291 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:39:47,291 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:39:47,296 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:39:47,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47 WrapperNode [2023-08-30 11:39:47,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:39:47,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:39:47,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:39:47,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:39:47,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,354 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 145 [2023-08-30 11:39:47,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:39:47,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:39:47,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:39:47,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:39:47,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,402 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:39:47,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:39:47,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:39:47,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:39:47,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (1/1) ... [2023-08-30 11:39:47,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:39:47,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:39:47,438 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 11:39:47,459 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 11:39:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:39:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:39:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:39:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:39:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:39:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:39:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:39:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:39:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:39:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:39:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:39:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:39:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:39:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:39:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:39:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:39:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:39:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:39:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:39:47,524 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 11:39:47,689 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:39:47,690 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:39:47,970 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:39:48,088 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:39:48,088 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:39:48,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:39:48 BoogieIcfgContainer [2023-08-30 11:39:48,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:39:48,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:39:48,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:39:48,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:39:48,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:39:47" (1/3) ... [2023-08-30 11:39:48,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1a8edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:39:48, skipping insertion in model container [2023-08-30 11:39:48,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:39:47" (2/3) ... [2023-08-30 11:39:48,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1a8edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:39:48, skipping insertion in model container [2023-08-30 11:39:48,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:39:48" (3/3) ... [2023-08-30 11:39:48,110 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2023-08-30 11:39:48,117 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:39:48,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:39:48,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 11:39:48,126 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:39:48,242 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 11:39:48,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 180 transitions, 392 flow [2023-08-30 11:39:48,333 INFO L130 PetriNetUnfolder]: 12/176 cut-off events. [2023-08-30 11:39:48,333 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:39:48,340 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 11:39:48,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 180 transitions, 392 flow [2023-08-30 11:39:48,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 156 transitions, 333 flow [2023-08-30 11:39:48,347 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:39:48,355 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 156 transitions, 333 flow [2023-08-30 11:39:48,357 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 156 transitions, 333 flow [2023-08-30 11:39:48,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 156 transitions, 333 flow [2023-08-30 11:39:48,395 INFO L130 PetriNetUnfolder]: 11/156 cut-off events. [2023-08-30 11:39:48,395 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:39:48,397 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 11:39:48,399 INFO L119 LiptonReduction]: Number of co-enabled transitions 3864 [2023-08-30 11:39:54,926 INFO L134 LiptonReduction]: Checked pairs total: 5813 [2023-08-30 11:39:54,926 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-30 11:39:54,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:39:54,945 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;@54a6d4fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:39:54,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-30 11:39:54,948 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:39:54,948 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:39:54,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:39:54,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:39:54,950 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 11:39:54,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:39:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash 24265, now seen corresponding path program 1 times [2023-08-30 11:39:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:39:54,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530078097] [2023-08-30 11:39:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:39:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:39:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:39:55,236 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 11:39:55,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:39:55,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530078097] [2023-08-30 11:39:55,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530078097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:39:55,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:39:55,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:39:55,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601096891] [2023-08-30 11:39:55,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:39:55,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:39:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:39:55,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:39:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:39:55,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-08-30 11:39:55,300 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 11:39:55,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:39:55,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-08-30 11:39:55,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:39:57,292 INFO L130 PetriNetUnfolder]: 14867/19013 cut-off events. [2023-08-30 11:39:57,292 INFO L131 PetriNetUnfolder]: For 578/578 co-relation queries the response was YES. [2023-08-30 11:39:57,323 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 11:39:57,420 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 71 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 11:39:57,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 336 flow [2023-08-30 11:39:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:39:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:39:57,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-08-30 11:39:57,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53596757852077 [2023-08-30 11:39:57,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-08-30 11:39:57,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-08-30 11:39:57,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:39:57,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-08-30 11:39:57,442 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 11:39:57,447 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 11:39:57,448 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 11:39:57,450 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 103 flow. Second operand 3 states and 529 transitions. [2023-08-30 11:39:57,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 336 flow [2023-08-30 11:39:57,512 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 11:39:57,514 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 100 flow [2023-08-30 11:39:57,516 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 11:39:57,519 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-08-30 11:39:57,519 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 100 flow [2023-08-30 11:39:57,520 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 11:39:57,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:39:57,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:39:57,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:39:57,521 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 11:39:57,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:39:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash 753399, now seen corresponding path program 1 times [2023-08-30 11:39:57,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:39:57,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221576111] [2023-08-30 11:39:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:39:57,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:39:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:39:57,609 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 11:39:57,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:39:57,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221576111] [2023-08-30 11:39:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221576111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:39:57,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723727038] [2023-08-30 11:39:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:39:57,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:39:57,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:39:57,613 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 11:39:57,614 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 11:39:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:39:57,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:39:57,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:39:57,729 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 11:39:57,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:39:57,744 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 11:39:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723727038] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:39:57,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:39:57,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:39:57,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381380860] [2023-08-30 11:39:57,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:39:57,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:39:57,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:39:57,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:39:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:39:57,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-08-30 11:39:57,787 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 11:39:57,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:39:57,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-08-30 11:39:57,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:01,764 INFO L130 PetriNetUnfolder]: 37169/47531 cut-off events. [2023-08-30 11:40:01,764 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:40:01,840 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 11:40:02,187 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 172 selfloop transitions, 9 changer transitions 0/182 dead transitions. [2023-08-30 11:40:02,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 182 transitions, 790 flow [2023-08-30 11:40:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:40:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:40:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1234 transitions. [2023-08-30 11:40:02,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358228397742075 [2023-08-30 11:40:02,191 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1234 transitions. [2023-08-30 11:40:02,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1234 transitions. [2023-08-30 11:40:02,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:02,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1234 transitions. [2023-08-30 11:40:02,195 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 11:40:02,200 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 11:40:02,201 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 11:40:02,202 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 100 flow. Second operand 7 states and 1234 transitions. [2023-08-30 11:40:02,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 182 transitions, 790 flow [2023-08-30 11:40:02,205 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 11:40:02,207 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 157 flow [2023-08-30 11:40:02,208 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 11:40:02,208 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-30 11:40:02,209 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 157 flow [2023-08-30 11:40:02,209 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 11:40:02,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:02,210 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:40:02,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:40:02,423 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 11:40:02,424 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 11:40:02,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash 23356105, now seen corresponding path program 1 times [2023-08-30 11:40:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:02,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193965245] [2023-08-30 11:40:02,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:02,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:02,495 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 11:40:02,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:02,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193965245] [2023-08-30 11:40:02,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193965245] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:40:02,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:40:02,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:40:02,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614492125] [2023-08-30 11:40:02,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:40:02,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:40:02,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:02,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:40:02,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:40:02,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-08-30 11:40:02,511 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 11:40:02,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:02,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-08-30 11:40:02,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:05,309 INFO L130 PetriNetUnfolder]: 37166/47527 cut-off events. [2023-08-30 11:40:05,309 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 11:40:05,365 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 11:40:05,549 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 11:40:05,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 212 flow [2023-08-30 11:40:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:40:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:40:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-30 11:40:05,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49442755825734547 [2023-08-30 11:40:05,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-30 11:40:05,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-30 11:40:05,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:05,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-30 11:40:05,557 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 11:40:05,559 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 11:40:05,559 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 11:40:05,560 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 157 flow. Second operand 3 states and 488 transitions. [2023-08-30 11:40:05,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 212 flow [2023-08-30 11:40:05,561 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 11:40:05,563 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 124 flow [2023-08-30 11:40:05,563 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 11:40:05,564 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 11:40:05,564 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 124 flow [2023-08-30 11:40:05,565 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 11:40:05,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:05,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:40:05,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:40:05,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:40:05,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:05,566 INFO L85 PathProgramCache]: Analyzing trace with hash 966793443, now seen corresponding path program 1 times [2023-08-30 11:40:05,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:05,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424935646] [2023-08-30 11:40:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:05,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:05,649 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 11:40:05,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:05,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424935646] [2023-08-30 11:40:05,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424935646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:40:05,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:40:05,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:40:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533809589] [2023-08-30 11:40:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:40:05,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:40:05,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:40:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:40:05,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 11:40:05,662 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 11:40:05,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:05,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 11:40:05,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:09,522 INFO L130 PetriNetUnfolder]: 52386/67057 cut-off events. [2023-08-30 11:40:09,522 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:40:09,623 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 11:40:09,846 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 67 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 11:40:09,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 325 flow [2023-08-30 11:40:09,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:40:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:40:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 11:40:09,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268490374873354 [2023-08-30 11:40:09,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 11:40:09,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 11:40:09,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:09,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 11:40:09,850 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 11:40:09,852 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 11:40:09,853 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 11:40:09,853 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 124 flow. Second operand 3 states and 520 transitions. [2023-08-30 11:40:09,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 325 flow [2023-08-30 11:40:09,854 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 11:40:09,855 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 137 flow [2023-08-30 11:40:09,855 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 11:40:09,856 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-08-30 11:40:09,856 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 137 flow [2023-08-30 11:40:09,857 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 11:40:09,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:09,857 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:40:09,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:40:09,858 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 11:40:09,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:09,858 INFO L85 PathProgramCache]: Analyzing trace with hash 970417879, now seen corresponding path program 2 times [2023-08-30 11:40:09,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:09,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111907085] [2023-08-30 11:40:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:09,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:09,937 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 11:40:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:09,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111907085] [2023-08-30 11:40:09,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111907085] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:40:09,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431841653] [2023-08-30 11:40:09,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:40:09,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:40:09,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:40:09,940 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 11:40:09,972 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 11:40:10,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:40:10,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:40:10,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:40:10,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:40:10,053 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 11:40:10,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:40:10,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431841653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:40:10,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:40:10,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:40:10,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095756389] [2023-08-30 11:40:10,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:40:10,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:40:10,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:40:10,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:40:10,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 11:40:10,067 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 11:40:10,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:10,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 11:40:10,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:14,276 INFO L130 PetriNetUnfolder]: 52246/66916 cut-off events. [2023-08-30 11:40:14,277 INFO L131 PetriNetUnfolder]: For 7468/7468 co-relation queries the response was YES. [2023-08-30 11:40:14,392 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 11:40:14,566 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 11:40:14,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 209 flow [2023-08-30 11:40:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:40:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:40:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-30 11:40:14,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2023-08-30 11:40:14,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-30 11:40:14,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-30 11:40:14,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:14,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-30 11:40:14,570 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 11:40:14,571 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 11:40:14,572 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 11:40:14,572 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 137 flow. Second operand 3 states and 490 transitions. [2023-08-30 11:40:14,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 209 flow [2023-08-30 11:40:14,581 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 11:40:14,582 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 117 flow [2023-08-30 11:40:14,582 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 11:40:14,583 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-30 11:40:14,583 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 117 flow [2023-08-30 11:40:14,583 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 11:40:14,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:14,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:40:14,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:40:14,789 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 11:40:14,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:40:14,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:14,790 INFO L85 PathProgramCache]: Analyzing trace with hash -94173660, now seen corresponding path program 1 times [2023-08-30 11:40:14,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:14,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789142898] [2023-08-30 11:40:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:14,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:14,854 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 11:40:14,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789142898] [2023-08-30 11:40:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789142898] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:40:14,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658963775] [2023-08-30 11:40:14,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:14,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:40:14,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:40:14,859 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 11:40:14,885 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 11:40:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:14,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:40:14,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:40:14,957 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 11:40:14,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:40:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658963775] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:40:14,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:40:14,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 11:40:14,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428798893] [2023-08-30 11:40:14,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:40:14,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:40:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:14,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:40:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:40:14,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 329 [2023-08-30 11:40:14,975 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 11:40:14,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:14,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 329 [2023-08-30 11:40:14,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:18,033 INFO L130 PetriNetUnfolder]: 41797/53534 cut-off events. [2023-08-30 11:40:18,034 INFO L131 PetriNetUnfolder]: For 3576/3576 co-relation queries the response was YES. [2023-08-30 11:40:18,108 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 11:40:18,248 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 11:40:18,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 199 flow [2023-08-30 11:40:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:40:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:40:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 11:40:18,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49138804457953394 [2023-08-30 11:40:18,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 11:40:18,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 11:40:18,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:18,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 11:40:18,252 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 11:40:18,253 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 11:40:18,254 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 11:40:18,254 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 117 flow. Second operand 3 states and 485 transitions. [2023-08-30 11:40:18,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 199 flow [2023-08-30 11:40:18,257 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 11:40:18,258 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 122 flow [2023-08-30 11:40:18,258 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 11:40:18,258 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 11:40:18,259 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 122 flow [2023-08-30 11:40:18,259 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 11:40:18,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:18,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:40:18,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:40:18,464 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 11:40:18,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:40:18,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash 451344900, now seen corresponding path program 1 times [2023-08-30 11:40:18,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:18,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651142859] [2023-08-30 11:40:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:18,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:18,510 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 11:40:18,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651142859] [2023-08-30 11:40:18,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651142859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:40:18,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110074949] [2023-08-30 11:40:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:18,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:40:18,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:40:18,512 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 11:40:18,515 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 11:40:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:18,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:40:18,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:40:18,655 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 11:40:18,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:40:18,717 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 11:40:18,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110074949] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:40:18,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:40:18,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 11:40:18,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524131919] [2023-08-30 11:40:18,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:40:18,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:40:18,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:18,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:40:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:40:18,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 11:40:18,896 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 11:40:18,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:18,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 11:40:18,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:22,750 INFO L130 PetriNetUnfolder]: 45473/58508 cut-off events. [2023-08-30 11:40:22,750 INFO L131 PetriNetUnfolder]: For 2008/2008 co-relation queries the response was YES. [2023-08-30 11:40:22,849 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 11:40:23,000 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 230 selfloop transitions, 14 changer transitions 0/245 dead transitions. [2023-08-30 11:40:23,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 245 transitions, 1075 flow [2023-08-30 11:40:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 11:40:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 11:40:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2091 transitions. [2023-08-30 11:40:23,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888940846387655 [2023-08-30 11:40:23,005 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2091 transitions. [2023-08-30 11:40:23,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2091 transitions. [2023-08-30 11:40:23,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:23,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2091 transitions. [2023-08-30 11:40:23,010 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 11:40:23,015 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 11:40:23,016 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 11:40:23,016 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 122 flow. Second operand 13 states and 2091 transitions. [2023-08-30 11:40:23,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 245 transitions, 1075 flow [2023-08-30 11:40:23,020 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 11:40:23,022 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 236 flow [2023-08-30 11:40:23,022 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 11:40:23,023 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-30 11:40:23,023 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 236 flow [2023-08-30 11:40:23,024 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 11:40:23,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:23,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:40:23,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:40:23,229 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 11:40:23,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:40:23,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1267936693, now seen corresponding path program 1 times [2023-08-30 11:40:23,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:23,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044406209] [2023-08-30 11:40:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:23,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:23,271 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 11:40:23,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:23,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044406209] [2023-08-30 11:40:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044406209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:40:23,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:40:23,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:40:23,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025202268] [2023-08-30 11:40:23,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:40:23,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:40:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:23,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:40:23,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:40:23,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 11:40:23,282 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 11:40:23,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:23,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 11:40:23,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:28,647 INFO L130 PetriNetUnfolder]: 61647/79404 cut-off events. [2023-08-30 11:40:28,647 INFO L131 PetriNetUnfolder]: For 164740/164779 co-relation queries the response was YES. [2023-08-30 11:40:28,862 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 11:40:29,161 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 83 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 11:40:29,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 562 flow [2023-08-30 11:40:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:40:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:40:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-30 11:40:29,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-08-30 11:40:29,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-30 11:40:29,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-30 11:40:29,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:29,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-30 11:40:29,165 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 11:40:29,166 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 11:40:29,166 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 11:40:29,166 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 236 flow. Second operand 3 states and 517 transitions. [2023-08-30 11:40:29,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 562 flow [2023-08-30 11:40:29,270 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 11:40:29,271 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 234 flow [2023-08-30 11:40:29,271 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 11:40:29,272 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-30 11:40:29,272 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 234 flow [2023-08-30 11:40:29,272 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 11:40:29,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:29,273 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 11:40:29,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:40:29,273 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:40:29,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:29,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1364116737, now seen corresponding path program 1 times [2023-08-30 11:40:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:29,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671382447] [2023-08-30 11:40:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:29,331 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 11:40:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:29,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671382447] [2023-08-30 11:40:29,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671382447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:40:29,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730284954] [2023-08-30 11:40:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:29,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:40:29,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:40:29,337 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 11:40:29,362 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 11:40:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:29,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 11:40:29,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:40:29,530 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 11:40:29,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:40:29,623 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 11:40:29,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730284954] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:40:29,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:40:29,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2023-08-30 11:40:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177845103] [2023-08-30 11:40:29,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:40:29,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 11:40:29,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:29,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 11:40:29,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-08-30 11:40:29,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 11:40:29,907 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 11:40:29,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:29,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 11:40:29,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:35,048 INFO L130 PetriNetUnfolder]: 50781/65812 cut-off events. [2023-08-30 11:40:35,048 INFO L131 PetriNetUnfolder]: For 104034/104041 co-relation queries the response was YES. [2023-08-30 11:40:35,241 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 11:40:35,438 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 412 selfloop transitions, 21 changer transitions 0/434 dead transitions. [2023-08-30 11:40:35,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 434 transitions, 2243 flow [2023-08-30 11:40:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 11:40:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 11:40:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3530 transitions. [2023-08-30 11:40:35,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487703785576126 [2023-08-30 11:40:35,445 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3530 transitions. [2023-08-30 11:40:35,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3530 transitions. [2023-08-30 11:40:35,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:35,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3530 transitions. [2023-08-30 11:40:35,453 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 11:40:35,460 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 11:40:35,462 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 11:40:35,462 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 234 flow. Second operand 22 states and 3530 transitions. [2023-08-30 11:40:35,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 434 transitions, 2243 flow [2023-08-30 11:40:35,925 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 11:40:35,927 INFO L231 Difference]: Finished difference. Result has 94 places, 57 transitions, 320 flow [2023-08-30 11:40:35,928 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 11:40:35,929 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2023-08-30 11:40:35,929 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 57 transitions, 320 flow [2023-08-30 11:40:35,930 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 11:40:35,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:35,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:40:35,934 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 11:40:36,130 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 11:40:36,131 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:40:36,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:36,131 INFO L85 PathProgramCache]: Analyzing trace with hash 656148694, now seen corresponding path program 1 times [2023-08-30 11:40:36,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:36,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193992574] [2023-08-30 11:40:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:36,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:36,187 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 11:40:36,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:36,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193992574] [2023-08-30 11:40:36,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193992574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:40:36,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:40:36,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:40:36,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565857361] [2023-08-30 11:40:36,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:40:36,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:40:36,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:40:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:40:36,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 11:40:36,196 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 11:40:36,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:36,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 11:40:36,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:42,215 INFO L130 PetriNetUnfolder]: 64549/87410 cut-off events. [2023-08-30 11:40:42,215 INFO L131 PetriNetUnfolder]: For 233846/233846 co-relation queries the response was YES. [2023-08-30 11:40:42,598 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 11:40:42,891 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 95 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-08-30 11:40:42,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 731 flow [2023-08-30 11:40:42,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:40:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:40:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-30 11:40:42,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2023-08-30 11:40:42,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-30 11:40:42,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-30 11:40:42,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:42,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-30 11:40:42,894 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 11:40:42,895 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 11:40:42,895 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 11:40:42,895 INFO L175 Difference]: Start difference. First operand has 94 places, 57 transitions, 320 flow. Second operand 3 states and 516 transitions. [2023-08-30 11:40:42,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 731 flow [2023-08-30 11:40:43,200 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 11:40:43,201 INFO L231 Difference]: Finished difference. Result has 89 places, 58 transitions, 301 flow [2023-08-30 11:40:43,201 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 11:40:43,202 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2023-08-30 11:40:43,202 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 58 transitions, 301 flow [2023-08-30 11:40:43,202 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 11:40:43,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:43,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:40:43,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:40:43,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:40:43,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash 656148620, now seen corresponding path program 1 times [2023-08-30 11:40:43,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:43,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983464363] [2023-08-30 11:40:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:43,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:43,551 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 11:40:43,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:43,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983464363] [2023-08-30 11:40:43,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983464363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:40:43,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934898834] [2023-08-30 11:40:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:43,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:40:43,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:40:43,553 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 11:40:43,555 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 11:40:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:43,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 11:40:43,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:40:43,732 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 11:40:43,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:40:43,782 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 11:40:43,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:40:43,828 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 11:40:43,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:40:43,862 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 11:40:43,884 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 11:40:43,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:40:43,944 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 11:40:43,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:40:43,993 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 11:40:44,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:40:44,004 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 11:40:44,019 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 11:40:44,037 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 11:40:44,041 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 11:40:44,092 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 11:40:44,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934898834] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:40:44,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:40:44,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 11:40:44,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44036301] [2023-08-30 11:40:44,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:40:44,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 11:40:44,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 11:40:44,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=239, Unknown=6, NotChecked=32, Total=342 [2023-08-30 11:40:44,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 11:40:44,161 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 11:40:44,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:44,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 11:40:44,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:51,669 INFO L130 PetriNetUnfolder]: 70875/97186 cut-off events. [2023-08-30 11:40:51,669 INFO L131 PetriNetUnfolder]: For 220528/220528 co-relation queries the response was YES. [2023-08-30 11:40:52,114 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 11:40:52,423 INFO L137 encePairwiseOnDemand]: 320/329 looper letters, 166 selfloop transitions, 14 changer transitions 0/180 dead transitions. [2023-08-30 11:40:52,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 180 transitions, 1393 flow [2023-08-30 11:40:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:40:52,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:40:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1036 transitions. [2023-08-30 11:40:52,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39361702127659576 [2023-08-30 11:40:52,426 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1036 transitions. [2023-08-30 11:40:52,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1036 transitions. [2023-08-30 11:40:52,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:52,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1036 transitions. [2023-08-30 11:40:52,429 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 11:40:52,432 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 11:40:52,432 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 11:40:52,432 INFO L175 Difference]: Start difference. First operand has 89 places, 58 transitions, 301 flow. Second operand 8 states and 1036 transitions. [2023-08-30 11:40:52,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 180 transitions, 1393 flow [2023-08-30 11:40:52,672 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 11:40:52,674 INFO L231 Difference]: Finished difference. Result has 97 places, 64 transitions, 384 flow [2023-08-30 11:40:52,674 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 11:40:52,675 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2023-08-30 11:40:52,675 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 64 transitions, 384 flow [2023-08-30 11:40:52,676 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 11:40:52,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:52,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:40:52,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 11:40:52,881 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 11:40:52,881 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:40:52,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 651333432, now seen corresponding path program 1 times [2023-08-30 11:40:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37590511] [2023-08-30 11:40:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:52,914 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 11:40:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37590511] [2023-08-30 11:40:52,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37590511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:40:52,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:40:52,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:40:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182630875] [2023-08-30 11:40:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:40:52,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:40:52,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:52,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:40:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:40:52,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 11:40:52,923 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 11:40:52,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:52,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 11:40:52,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:59,539 INFO L130 PetriNetUnfolder]: 64013/86660 cut-off events. [2023-08-30 11:40:59,540 INFO L131 PetriNetUnfolder]: For 243561/248929 co-relation queries the response was YES. [2023-08-30 11:40:59,953 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 11:41:00,233 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 99 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-08-30 11:41:00,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 102 transitions, 825 flow [2023-08-30 11:41:00,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:41:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:41:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-08-30 11:41:00,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2023-08-30 11:41:00,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-08-30 11:41:00,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-08-30 11:41:00,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:00,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-08-30 11:41:00,237 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 11:41:00,238 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 11:41:00,239 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 11:41:00,239 INFO L175 Difference]: Start difference. First operand has 97 places, 64 transitions, 384 flow. Second operand 3 states and 507 transitions. [2023-08-30 11:41:00,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 102 transitions, 825 flow [2023-08-30 11:41:00,583 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 11:41:00,585 INFO L231 Difference]: Finished difference. Result has 96 places, 63 transitions, 376 flow [2023-08-30 11:41:00,585 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 11:41:00,585 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2023-08-30 11:41:00,585 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 63 transitions, 376 flow [2023-08-30 11:41:00,586 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 11:41:00,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:00,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:41:00,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:41:00,586 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:41:00,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1134089444, now seen corresponding path program 1 times [2023-08-30 11:41:00,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:00,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408553637] [2023-08-30 11:41:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:00,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:00,622 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 11:41:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408553637] [2023-08-30 11:41:00,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408553637] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:41:00,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:41:00,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:41:00,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092794434] [2023-08-30 11:41:00,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:41:00,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:41:00,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:00,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:41:00,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:41:00,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 329 [2023-08-30 11:41:00,626 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 11:41:00,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:00,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 329 [2023-08-30 11:41:00,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:06,965 INFO L130 PetriNetUnfolder]: 62024/83948 cut-off events. [2023-08-30 11:41:06,965 INFO L131 PetriNetUnfolder]: For 251719/257051 co-relation queries the response was YES. [2023-08-30 11:41:07,382 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 11:41:07,657 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 97 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-08-30 11:41:07,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 817 flow [2023-08-30 11:41:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:41:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:41:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-30 11:41:07,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157041540020263 [2023-08-30 11:41:07,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-30 11:41:07,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-30 11:41:07,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:07,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-30 11:41:07,660 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 11:41:07,661 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 11:41:07,661 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 11:41:07,661 INFO L175 Difference]: Start difference. First operand has 96 places, 63 transitions, 376 flow. Second operand 3 states and 509 transitions. [2023-08-30 11:41:07,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 817 flow [2023-08-30 11:41:10,081 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 11:41:10,082 INFO L231 Difference]: Finished difference. Result has 98 places, 63 transitions, 383 flow [2023-08-30 11:41:10,083 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 11:41:10,083 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 48 predicate places. [2023-08-30 11:41:10,083 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 63 transitions, 383 flow [2023-08-30 11:41:10,084 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 11:41:10,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:10,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:41:10,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:41:10,084 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:41:10,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:10,084 INFO L85 PathProgramCache]: Analyzing trace with hash -801421526, now seen corresponding path program 1 times [2023-08-30 11:41:10,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:10,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166955910] [2023-08-30 11:41:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:10,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:10,491 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 11:41:10,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:10,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166955910] [2023-08-30 11:41:10,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166955910] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:41:10,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325119268] [2023-08-30 11:41:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:10,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:41:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:41:10,494 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 11:41:10,496 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 11:41:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:10,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 11:41:10,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:41:10,646 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 11:41:10,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:10,697 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 11:41:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:10,747 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 11:41:10,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:10,782 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 11:41:10,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:10,850 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 11:41:10,866 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 11:41:10,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:41:10,885 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 11:41:10,895 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 11:41:11,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:41:11,015 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 11:41:11,031 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:41:11,031 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 11:41:11,093 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 113 treesize of output 109 [2023-08-30 11:41:11,102 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 11:41:11,111 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 11:41:11,122 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 11:41:11,280 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 11:41:11,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325119268] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:41:11,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:41:11,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-08-30 11:41:11,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035235390] [2023-08-30 11:41:11,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:41:11,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 11:41:11,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:11,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 11:41:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=338, Unknown=10, NotChecked=78, Total=506 [2023-08-30 11:41:11,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 11:41:11,326 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 11:41:11,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:11,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 11:41:11,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:17,285 INFO L130 PetriNetUnfolder]: 53451/73704 cut-off events. [2023-08-30 11:41:17,286 INFO L131 PetriNetUnfolder]: For 202100/202100 co-relation queries the response was YES. [2023-08-30 11:41:17,644 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 11:41:17,859 INFO L137 encePairwiseOnDemand]: 321/329 looper letters, 119 selfloop transitions, 13 changer transitions 0/132 dead transitions. [2023-08-30 11:41:17,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 132 transitions, 1028 flow [2023-08-30 11:41:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:41:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:41:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 877 transitions. [2023-08-30 11:41:17,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3808076422058185 [2023-08-30 11:41:17,861 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 877 transitions. [2023-08-30 11:41:17,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 877 transitions. [2023-08-30 11:41:17,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:17,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 877 transitions. [2023-08-30 11:41:17,863 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 11:41:17,865 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 11:41:17,865 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 11:41:17,866 INFO L175 Difference]: Start difference. First operand has 98 places, 63 transitions, 383 flow. Second operand 7 states and 877 transitions. [2023-08-30 11:41:17,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 132 transitions, 1028 flow [2023-08-30 11:41:18,074 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 11:41:18,075 INFO L231 Difference]: Finished difference. Result has 103 places, 63 transitions, 411 flow [2023-08-30 11:41:18,075 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 11:41:18,076 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 53 predicate places. [2023-08-30 11:41:18,076 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 63 transitions, 411 flow [2023-08-30 11:41:18,077 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 11:41:18,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:18,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:41:18,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 11:41:18,277 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 11:41:18,278 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:41:18,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1134225228, now seen corresponding path program 1 times [2023-08-30 11:41:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:18,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051510864] [2023-08-30 11:41:18,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:18,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:18,332 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 11:41:18,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:18,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051510864] [2023-08-30 11:41:18,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051510864] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:41:18,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694394850] [2023-08-30 11:41:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:18,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:41:18,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:41:18,335 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 11:41:18,360 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 11:41:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:18,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:41:18,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:41:18,497 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 11:41:18,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:41:18,556 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 11:41:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694394850] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:41:18,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:41:18,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 11:41:18,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842886277] [2023-08-30 11:41:18,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:41:18,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:41:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:18,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:41:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:41:18,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 11:41:18,746 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 11:41:18,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:18,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 11:41:18,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:23,436 INFO L130 PetriNetUnfolder]: 42013/57792 cut-off events. [2023-08-30 11:41:23,436 INFO L131 PetriNetUnfolder]: For 169711/169711 co-relation queries the response was YES. [2023-08-30 11:41:23,718 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 11:41:23,887 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 249 selfloop transitions, 15 changer transitions 4/268 dead transitions. [2023-08-30 11:41:23,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 268 transitions, 1890 flow [2023-08-30 11:41:23,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:41:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:41:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1894 transitions. [2023-08-30 11:41:23,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797365754812563 [2023-08-30 11:41:23,890 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1894 transitions. [2023-08-30 11:41:23,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1894 transitions. [2023-08-30 11:41:23,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:23,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1894 transitions. [2023-08-30 11:41:23,894 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 11:41:23,898 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 11:41:23,899 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 11:41:23,899 INFO L175 Difference]: Start difference. First operand has 103 places, 63 transitions, 411 flow. Second operand 12 states and 1894 transitions. [2023-08-30 11:41:23,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 268 transitions, 1890 flow [2023-08-30 11:41:24,102 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 11:41:24,104 INFO L231 Difference]: Finished difference. Result has 111 places, 68 transitions, 466 flow [2023-08-30 11:41:24,104 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 11:41:24,104 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 61 predicate places. [2023-08-30 11:41:24,104 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 68 transitions, 466 flow [2023-08-30 11:41:24,105 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 11:41:24,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:24,105 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 11:41:24,111 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 11:41:24,309 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 11:41:24,310 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:41:24,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:24,310 INFO L85 PathProgramCache]: Analyzing trace with hash 751289635, now seen corresponding path program 2 times [2023-08-30 11:41:24,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:24,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944196666] [2023-08-30 11:41:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:24,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:24,364 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 11:41:24,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944196666] [2023-08-30 11:41:24,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944196666] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:41:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116028204] [2023-08-30 11:41:24,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:41:24,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:41:24,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:41:24,367 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 11:41:24,369 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 11:41:24,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:41:24,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:41:24,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:41:24,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:41:24,488 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 11:41:24,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:41:24,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116028204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:41:24,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:41:24,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 11:41:24,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320408351] [2023-08-30 11:41:24,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:41:24,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:41:24,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:24,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:41:24,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:41:24,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 11:41:24,503 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 11:41:24,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:24,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 11:41:24,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:27,902 INFO L130 PetriNetUnfolder]: 30954/42113 cut-off events. [2023-08-30 11:41:27,902 INFO L131 PetriNetUnfolder]: For 213802/217151 co-relation queries the response was YES. [2023-08-30 11:41:28,107 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 11:41:28,224 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 58 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-30 11:41:28,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 63 transitions, 485 flow [2023-08-30 11:41:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:41:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:41:28,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-30 11:41:28,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2023-08-30 11:41:28,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-30 11:41:28,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-30 11:41:28,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:28,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-30 11:41:28,229 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 11:41:28,231 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 11:41:28,232 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 11:41:28,232 INFO L175 Difference]: Start difference. First operand has 111 places, 68 transitions, 466 flow. Second operand 3 states and 486 transitions. [2023-08-30 11:41:28,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 63 transitions, 485 flow [2023-08-30 11:41:28,325 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 11:41:28,326 INFO L231 Difference]: Finished difference. Result has 93 places, 63 transitions, 315 flow [2023-08-30 11:41:28,326 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 11:41:28,326 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-08-30 11:41:28,326 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 63 transitions, 315 flow [2023-08-30 11:41:28,327 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 11:41:28,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:28,327 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:41:28,332 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 11:41:28,527 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 11:41:28,528 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:41:28,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:28,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1342970954, now seen corresponding path program 1 times [2023-08-30 11:41:28,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:28,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672292195] [2023-08-30 11:41:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:28,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:28,964 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 11:41:28,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:28,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672292195] [2023-08-30 11:41:28,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672292195] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:41:28,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722865932] [2023-08-30 11:41:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:28,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:41:28,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:41:28,969 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 11:41:28,980 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 11:41:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:29,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 11:41:29,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:41:29,179 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 11:41:29,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:29,219 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 16 treesize of output 18 [2023-08-30 11:41:29,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:29,254 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 11:41:29,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:29,284 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 11:41:29,327 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 11:41:29,347 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 11:41:29,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:41:29,439 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 11:41:29,500 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:41:29,500 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 11:41:29,508 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:41:29,508 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 11:41:29,524 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 11:41:29,528 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 11:41:29,534 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 11:41:29,645 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 11:41:29,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722865932] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:41:29,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:41:29,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-30 11:41:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527833614] [2023-08-30 11:41:29,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:41:29,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 11:41:29,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 11:41:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=509, Unknown=9, NotChecked=46, Total=650 [2023-08-30 11:41:29,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 11:41:29,716 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 11:41:29,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:29,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 11:41:29,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:33,328 INFO L130 PetriNetUnfolder]: 32833/44762 cut-off events. [2023-08-30 11:41:33,328 INFO L131 PetriNetUnfolder]: For 60437/60437 co-relation queries the response was YES. [2023-08-30 11:41:33,477 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 11:41:33,588 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 138 selfloop transitions, 11 changer transitions 1/150 dead transitions. [2023-08-30 11:41:33,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 150 transitions, 1002 flow [2023-08-30 11:41:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:41:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:41:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-08-30 11:41:33,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39209726443769 [2023-08-30 11:41:33,591 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-08-30 11:41:33,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-08-30 11:41:33,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:33,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-08-30 11:41:33,593 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 11:41:33,595 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 11:41:33,595 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 11:41:33,595 INFO L175 Difference]: Start difference. First operand has 93 places, 63 transitions, 315 flow. Second operand 8 states and 1032 transitions. [2023-08-30 11:41:33,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 150 transitions, 1002 flow [2023-08-30 11:41:33,659 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 11:41:33,660 INFO L231 Difference]: Finished difference. Result has 101 places, 67 transitions, 368 flow [2023-08-30 11:41:33,661 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 11:41:33,661 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 51 predicate places. [2023-08-30 11:41:33,661 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 67 transitions, 368 flow [2023-08-30 11:41:33,662 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 11:41:33,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:33,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:41:33,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-30 11:41:33,867 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 11:41:33,867 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:41:33,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash -837495404, now seen corresponding path program 1 times [2023-08-30 11:41:33,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:33,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231439104] [2023-08-30 11:41:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:33,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:33,940 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 11:41:33,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:33,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231439104] [2023-08-30 11:41:33,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231439104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:41:33,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:41:33,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:41:33,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806367602] [2023-08-30 11:41:33,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:41:33,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:41:33,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:33,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:41:33,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:41:33,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 11:41:33,944 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 11:41:33,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:33,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 11:41:33,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:36,890 INFO L130 PetriNetUnfolder]: 31183/42344 cut-off events. [2023-08-30 11:41:36,891 INFO L131 PetriNetUnfolder]: For 63779/66791 co-relation queries the response was YES. [2023-08-30 11:41:37,087 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 11:41:37,208 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 87 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-08-30 11:41:37,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 693 flow [2023-08-30 11:41:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:41:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:41:37,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 11:41:37,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055724417426545 [2023-08-30 11:41:37,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 11:41:37,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 11:41:37,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:37,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 11:41:37,210 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 11:41:37,211 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 11:41:37,212 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 11:41:37,212 INFO L175 Difference]: Start difference. First operand has 101 places, 67 transitions, 368 flow. Second operand 3 states and 499 transitions. [2023-08-30 11:41:37,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 693 flow [2023-08-30 11:41:37,472 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 11:41:37,474 INFO L231 Difference]: Finished difference. Result has 100 places, 67 transitions, 363 flow [2023-08-30 11:41:37,474 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 11:41:37,474 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 50 predicate places. [2023-08-30 11:41:37,474 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 67 transitions, 363 flow [2023-08-30 11:41:37,475 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 11:41:37,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:37,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:41:37,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 11:41:37,475 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:41:37,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1313383312, now seen corresponding path program 1 times [2023-08-30 11:41:37,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:37,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552767425] [2023-08-30 11:41:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:37,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:38,136 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 11:41:38,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:38,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552767425] [2023-08-30 11:41:38,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552767425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:41:38,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746893595] [2023-08-30 11:41:38,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:38,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:41:38,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:41:38,141 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 11:41:38,144 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 11:41:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:38,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-30 11:41:38,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:41:38,326 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 11:41:38,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:38,372 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 11:41:38,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:38,415 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 11:41:38,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:38,452 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 11:41:38,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:38,483 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 11:41:38,531 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 11:41:38,552 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 11:41:38,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:41:38,692 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 11:41:38,704 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 11:41:38,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:41:38,713 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 11:41:38,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:41:38,722 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 11:41:38,763 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 11:41:38,771 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 11:41:38,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 99 [2023-08-30 11:41:38,794 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 11:41:39,019 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 11:41:39,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746893595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:41:39,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:41:39,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-30 11:41:39,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274374623] [2023-08-30 11:41:39,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:41:39,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 11:41:39,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 11:41:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=590, Unknown=15, NotChecked=102, Total=812 [2023-08-30 11:41:39,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 11:41:39,025 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 11:41:39,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:39,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 11:41:39,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:43,512 INFO L130 PetriNetUnfolder]: 38795/53000 cut-off events. [2023-08-30 11:41:43,512 INFO L131 PetriNetUnfolder]: For 92979/92979 co-relation queries the response was YES. [2023-08-30 11:41:43,753 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 11:41:43,890 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 136 selfloop transitions, 11 changer transitions 1/148 dead transitions. [2023-08-30 11:41:43,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 148 transitions, 993 flow [2023-08-30 11:41:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:41:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:41:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1016 transitions. [2023-08-30 11:41:43,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860182370820669 [2023-08-30 11:41:43,892 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1016 transitions. [2023-08-30 11:41:43,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1016 transitions. [2023-08-30 11:41:43,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:43,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1016 transitions. [2023-08-30 11:41:43,893 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 11:41:43,895 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 11:41:43,895 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 11:41:43,895 INFO L175 Difference]: Start difference. First operand has 100 places, 67 transitions, 363 flow. Second operand 8 states and 1016 transitions. [2023-08-30 11:41:43,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 148 transitions, 993 flow [2023-08-30 11:41:44,136 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 11:41:44,138 INFO L231 Difference]: Finished difference. Result has 106 places, 68 transitions, 393 flow [2023-08-30 11:41:44,138 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 11:41:44,139 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 56 predicate places. [2023-08-30 11:41:44,139 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 68 transitions, 393 flow [2023-08-30 11:41:44,140 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 11:41:44,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:44,140 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:41:44,147 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 11:41:44,344 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 11:41:44,345 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:41:44,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1317569428, now seen corresponding path program 2 times [2023-08-30 11:41:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:44,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890972882] [2023-08-30 11:41:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:44,448 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 11:41:44,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:44,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890972882] [2023-08-30 11:41:44,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890972882] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:41:44,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225588515] [2023-08-30 11:41:44,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:41:44,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:41:44,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:41:44,453 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 11:41:44,480 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 11:41:44,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 11:41:44,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:41:44,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 11:41:44,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:41:44,670 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 11:41:44,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:41:44,733 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 11:41:44,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225588515] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:41:44,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:41:44,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-30 11:41:44,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578827282] [2023-08-30 11:41:44,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:41:44,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 11:41:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:44,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 11:41:44,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-08-30 11:41:44,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 11:41:44,956 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 11:41:44,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:44,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 11:41:44,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:49,074 INFO L130 PetriNetUnfolder]: 36951/50670 cut-off events. [2023-08-30 11:41:49,074 INFO L131 PetriNetUnfolder]: For 101092/101092 co-relation queries the response was YES. [2023-08-30 11:41:49,316 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 11:41:49,442 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 296 selfloop transitions, 22 changer transitions 12/330 dead transitions. [2023-08-30 11:41:49,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 330 transitions, 2066 flow [2023-08-30 11:41:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 11:41:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 11:41:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2669 transitions. [2023-08-30 11:41:49,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2023-08-30 11:41:49,445 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2669 transitions. [2023-08-30 11:41:49,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2669 transitions. [2023-08-30 11:41:49,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:49,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2669 transitions. [2023-08-30 11:41:49,448 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 11:41:49,451 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 11:41:49,452 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 11:41:49,452 INFO L175 Difference]: Start difference. First operand has 106 places, 68 transitions, 393 flow. Second operand 17 states and 2669 transitions. [2023-08-30 11:41:49,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 330 transitions, 2066 flow [2023-08-30 11:41:50,481 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 11:41:50,483 INFO L231 Difference]: Finished difference. Result has 121 places, 77 transitions, 522 flow [2023-08-30 11:41:50,483 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 11:41:50,483 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 71 predicate places. [2023-08-30 11:41:50,483 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 77 transitions, 522 flow [2023-08-30 11:41:50,484 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 11:41:50,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:50,484 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:41:50,488 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 11:41:50,684 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 11:41:50,684 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:41:50,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:50,685 INFO L85 PathProgramCache]: Analyzing trace with hash -143849396, now seen corresponding path program 3 times [2023-08-30 11:41:50,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:50,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742239901] [2023-08-30 11:41:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:50,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:51,142 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 11:41:51,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742239901] [2023-08-30 11:41:51,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742239901] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:41:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028132065] [2023-08-30 11:41:51,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 11:41:51,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:41:51,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:41:51,145 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 11:41:51,172 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 11:41:51,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 11:41:51,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:41:51,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 11:41:51,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:41:51,444 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 11:41:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:51,482 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 11:41:51,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:51,519 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 11:41:51,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:41:51,552 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 11:41:51,570 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 11:41:51,597 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 11:41:51,619 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 11:41:51,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:41:51,811 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:41:51,811 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 11:41:51,818 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:41:51,819 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 11:41:51,823 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 11:41:51,828 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 11:41:51,834 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 11:41:51,979 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 11:41:51,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028132065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:41:51,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:41:51,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-30 11:41:51,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969923100] [2023-08-30 11:41:51,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:41:51,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 11:41:51,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:51,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 11:41:51,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=754, Unknown=14, NotChecked=0, Total=870 [2023-08-30 11:41:52,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 11:41:52,569 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 11:41:52,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:52,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 11:41:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:57,441 INFO L130 PetriNetUnfolder]: 37527/51438 cut-off events. [2023-08-30 11:41:57,441 INFO L131 PetriNetUnfolder]: For 125206/125206 co-relation queries the response was YES. [2023-08-30 11:41:57,724 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 11:41:57,859 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 167 selfloop transitions, 13 changer transitions 2/182 dead transitions. [2023-08-30 11:41:57,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 1342 flow [2023-08-30 11:41:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 11:41:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 11:41:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1306 transitions. [2023-08-30 11:41:58,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39696048632218844 [2023-08-30 11:41:58,051 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1306 transitions. [2023-08-30 11:41:58,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1306 transitions. [2023-08-30 11:41:58,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:58,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1306 transitions. [2023-08-30 11:41:58,052 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 11:41:58,054 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 11:41:58,054 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 11:41:58,054 INFO L175 Difference]: Start difference. First operand has 121 places, 77 transitions, 522 flow. Second operand 10 states and 1306 transitions. [2023-08-30 11:41:58,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 1342 flow [2023-08-30 11:41:58,493 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 11:41:58,494 INFO L231 Difference]: Finished difference. Result has 127 places, 82 transitions, 575 flow [2023-08-30 11:41:58,494 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 11:41:58,494 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2023-08-30 11:41:58,495 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 82 transitions, 575 flow [2023-08-30 11:41:58,495 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 11:41:58,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:58,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:41:58,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-30 11:41:58,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 11:41:58,696 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:41:58,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1381261288, now seen corresponding path program 1 times [2023-08-30 11:41:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:58,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949829204] [2023-08-30 11:41:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:58,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:58,746 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 11:41:58,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:58,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949829204] [2023-08-30 11:41:58,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949829204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:41:58,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:41:58,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:41:58,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125391328] [2023-08-30 11:41:58,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:41:58,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:41:58,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:58,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:41:58,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:41:58,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 11:41:58,750 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 11:41:58,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:58,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 11:41:58,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:02,642 INFO L130 PetriNetUnfolder]: 34153/47436 cut-off events. [2023-08-30 11:42:02,642 INFO L131 PetriNetUnfolder]: For 105970/106599 co-relation queries the response was YES. [2023-08-30 11:42:02,909 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 11:42:03,035 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 128 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-08-30 11:42:03,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 136 transitions, 1215 flow [2023-08-30 11:42:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:42:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:42:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 11:42:03,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055724417426545 [2023-08-30 11:42:03,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 11:42:03,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 11:42:03,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:03,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 11:42:03,037 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 11:42:03,038 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 11:42:03,038 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 11:42:03,038 INFO L175 Difference]: Start difference. First operand has 127 places, 82 transitions, 575 flow. Second operand 3 states and 499 transitions. [2023-08-30 11:42:03,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 136 transitions, 1215 flow [2023-08-30 11:42:03,274 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 11:42:03,275 INFO L231 Difference]: Finished difference. Result has 125 places, 82 transitions, 552 flow [2023-08-30 11:42:03,275 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 11:42:03,276 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 75 predicate places. [2023-08-30 11:42:03,276 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 82 transitions, 552 flow [2023-08-30 11:42:03,276 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 11:42:03,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:03,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:42:03,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 11:42:03,276 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:42:03,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash 130575952, now seen corresponding path program 1 times [2023-08-30 11:42:03,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:03,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871388085] [2023-08-30 11:42:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:03,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:03,496 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 11:42:03,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:03,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871388085] [2023-08-30 11:42:03,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871388085] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:42:03,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828134297] [2023-08-30 11:42:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:03,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:03,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:42:03,503 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 11:42:03,526 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 11:42:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:03,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 11:42:03,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:42:03,663 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 11:42:03,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:03,698 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 11:42:03,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:03,740 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 11:42:03,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:03,768 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 11:42:03,783 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 11:42:03,797 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 11:42:03,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:42:03,817 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 11:42:03,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:03,891 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 11:42:03,902 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:03,902 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 11:42:03,922 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 11:42:03,931 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 11:42:03,935 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 11:42:03,977 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 11:42:03,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828134297] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:42:03,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:42:03,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 11:42:03,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642427453] [2023-08-30 11:42:03,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:42:03,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 11:42:03,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:42:03,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 11:42:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=243, Unknown=5, NotChecked=32, Total=342 [2023-08-30 11:42:04,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 329 [2023-08-30 11:42:04,070 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 11:42:04,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:42:04,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 329 [2023-08-30 11:42:04,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:10,180 INFO L130 PetriNetUnfolder]: 50837/70618 cut-off events. [2023-08-30 11:42:10,181 INFO L131 PetriNetUnfolder]: For 176144/179173 co-relation queries the response was YES. [2023-08-30 11:42:10,593 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 11:42:10,734 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 136 selfloop transitions, 15 changer transitions 2/159 dead transitions. [2023-08-30 11:42:10,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 159 transitions, 1293 flow [2023-08-30 11:42:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:42:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:42:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 788 transitions. [2023-08-30 11:42:10,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39918946301925023 [2023-08-30 11:42:10,736 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 788 transitions. [2023-08-30 11:42:10,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 788 transitions. [2023-08-30 11:42:10,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:10,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 788 transitions. [2023-08-30 11:42:10,737 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 11:42:10,738 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 11:42:10,739 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 11:42:10,739 INFO L175 Difference]: Start difference. First operand has 125 places, 82 transitions, 552 flow. Second operand 6 states and 788 transitions. [2023-08-30 11:42:10,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 159 transitions, 1293 flow [2023-08-30 11:42:12,168 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 11:42:12,170 INFO L231 Difference]: Finished difference. Result has 128 places, 83 transitions, 590 flow [2023-08-30 11:42:12,170 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 11:42:12,170 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 78 predicate places. [2023-08-30 11:42:12,171 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 83 transitions, 590 flow [2023-08-30 11:42:12,171 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 11:42:12,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:12,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:42:12,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 11:42:12,375 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 11:42:12,376 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:42:12,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1384853932, now seen corresponding path program 2 times [2023-08-30 11:42:12,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:12,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057545280] [2023-08-30 11:42:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:12,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:12,703 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 11:42:12,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057545280] [2023-08-30 11:42:12,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057545280] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:42:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495945203] [2023-08-30 11:42:12,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:42:12,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:12,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:42:12,706 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:42:12,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 11:42:12,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 11:42:12,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:42:12,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 11:42:12,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:42:12,904 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 11:42:12,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:12,953 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 11:42:12,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:12,996 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 11:42:13,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:13,035 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 11:42:13,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:13,164 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 11:42:13,183 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 11:42:13,194 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 11:42:13,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:42:13,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:13,334 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 11:42:13,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:13,347 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 8771 treesize of output 8643 [2023-08-30 11:42:13,398 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 129 treesize of output 127 [2023-08-30 11:42:13,405 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 11:42:13,413 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 119 treesize of output 115 [2023-08-30 11:42:13,422 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 11:42:13,601 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 11:42:13,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495945203] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:42:13,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:42:13,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-30 11:42:13,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509842249] [2023-08-30 11:42:13,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:42:13,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 11:42:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:42:13,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 11:42:13,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=359, Unknown=12, NotChecked=0, Total=462 [2023-08-30 11:42:14,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 329 [2023-08-30 11:42:14,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 83 transitions, 590 flow. Second operand has 22 states, 22 states have (on average 119.95454545454545) internal successors, (2639), 22 states have internal predecessors, (2639), 0 states have call successors, (0), 0 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 11:42:14,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:42:14,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 329 [2023-08-30 11:42:14,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:19,288 INFO L130 PetriNetUnfolder]: 44647/62260 cut-off events. [2023-08-30 11:42:19,288 INFO L131 PetriNetUnfolder]: For 162834/165527 co-relation queries the response was YES. [2023-08-30 11:42:19,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223285 conditions, 62260 events. 44647/62260 cut-off events. For 162834/165527 co-relation queries the response was YES. Maximal size of possible extension queue 2190. Compared 395519 event pairs, 37468 based on Foata normal form. 4861/66834 useless extension candidates. Maximal degree in co-relation 223246. Up to 62066 conditions per place. [2023-08-30 11:42:19,763 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 41 selfloop transitions, 3 changer transitions 36/82 dead transitions. [2023-08-30 11:42:19,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 82 transitions, 734 flow [2023-08-30 11:42:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:42:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:42:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 621 transitions. [2023-08-30 11:42:19,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37750759878419454 [2023-08-30 11:42:19,765 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 621 transitions. [2023-08-30 11:42:19,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 621 transitions. [2023-08-30 11:42:19,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:19,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 621 transitions. [2023-08-30 11:42:19,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 0 states have call successors, (0), 0 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 11:42:19,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 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 11:42:19,767 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 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 11:42:19,767 INFO L175 Difference]: Start difference. First operand has 128 places, 83 transitions, 590 flow. Second operand 5 states and 621 transitions. [2023-08-30 11:42:19,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 82 transitions, 734 flow [2023-08-30 11:42:20,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 82 transitions, 708 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 11:42:20,903 INFO L231 Difference]: Finished difference. Result has 125 places, 46 transitions, 290 flow [2023-08-30 11:42:20,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=125, PETRI_TRANSITIONS=46} [2023-08-30 11:42:20,904 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 75 predicate places. [2023-08-30 11:42:20,904 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 46 transitions, 290 flow [2023-08-30 11:42:20,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 119.95454545454545) internal successors, (2639), 22 states have internal predecessors, (2639), 0 states have call successors, (0), 0 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 11:42:20,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:20,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:42:20,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 11:42:21,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:21,113 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:42:21,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash -34590426, now seen corresponding path program 2 times [2023-08-30 11:42:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:21,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542110600] [2023-08-30 11:42:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:21,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:21,603 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 11:42:21,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542110600] [2023-08-30 11:42:21,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542110600] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:42:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948605893] [2023-08-30 11:42:21,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:42:21,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:21,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:42:21,605 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:42:21,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 11:42:21,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 11:42:21,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:42:21,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 11:42:21,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:42:21,855 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 11:42:21,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:21,903 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 11:42:21,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:21,944 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 11:42:21,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:21,983 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 11:42:22,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:22,015 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 11:42:22,063 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 11:42:22,091 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 23 treesize of output 22 [2023-08-30 11:42:22,116 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 11:42:22,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:42:22,209 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1250 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1250) c_~A~0.base) (+ c_~A~0.offset 8)) 2147483649)) is different from false [2023-08-30 11:42:22,216 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1249 (Array Int Int)) (v_ArrVal_1250 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1249) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1250) c_~A~0.base) (+ c_~A~0.offset 8)) 2147483649)) is different from false [2023-08-30 11:42:22,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:22,322 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 11:42:22,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:22,331 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 11:42:22,357 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 127 treesize of output 119 [2023-08-30 11:42:22,364 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 119 treesize of output 103 [2023-08-30 11:42:22,370 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 11:42:22,479 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 126 treesize of output 94 [2023-08-30 11:42:22,583 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 11:42:22,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948605893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:42:22,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:42:22,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2023-08-30 11:42:22,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329930049] [2023-08-30 11:42:22,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:42:22,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 11:42:22,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:42:22,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 11:42:22,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=938, Unknown=9, NotChecked=126, Total=1190 [2023-08-30 11:42:22,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 11:42:22,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 46 transitions, 290 flow. Second operand has 35 states, 35 states have (on average 115.28571428571429) internal successors, (4035), 35 states have internal predecessors, (4035), 0 states have call successors, (0), 0 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 11:42:22,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:42:22,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 11:42:22,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:26,036 INFO L130 PetriNetUnfolder]: 22811/31058 cut-off events. [2023-08-30 11:42:26,036 INFO L131 PetriNetUnfolder]: For 118364/118364 co-relation queries the response was YES. [2023-08-30 11:42:26,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120997 conditions, 31058 events. 22811/31058 cut-off events. For 118364/118364 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 169054 event pairs, 7940 based on Foata normal form. 1240/32298 useless extension candidates. Maximal degree in co-relation 120960. Up to 15848 conditions per place. [2023-08-30 11:42:26,286 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 97 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2023-08-30 11:42:26,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 110 transitions, 780 flow [2023-08-30 11:42:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 11:42:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 11:42:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1222 transitions. [2023-08-30 11:42:26,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2023-08-30 11:42:26,288 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1222 transitions. [2023-08-30 11:42:26,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1222 transitions. [2023-08-30 11:42:26,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:26,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1222 transitions. [2023-08-30 11:42:26,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.2) internal successors, (1222), 10 states have internal predecessors, (1222), 0 states have call successors, (0), 0 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 11:42:26,291 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 11:42:26,292 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 11:42:26,292 INFO L175 Difference]: Start difference. First operand has 125 places, 46 transitions, 290 flow. Second operand 10 states and 1222 transitions. [2023-08-30 11:42:26,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 110 transitions, 780 flow [2023-08-30 11:42:27,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 663 flow, removed 20 selfloop flow, removed 26 redundant places. [2023-08-30 11:42:27,404 INFO L231 Difference]: Finished difference. Result has 79 places, 47 transitions, 249 flow [2023-08-30 11:42:27,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=79, PETRI_TRANSITIONS=47} [2023-08-30 11:42:27,405 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 29 predicate places. [2023-08-30 11:42:27,405 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 47 transitions, 249 flow [2023-08-30 11:42:27,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 115.28571428571429) internal successors, (4035), 35 states have internal predecessors, (4035), 0 states have call successors, (0), 0 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 11:42:27,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:27,406 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:42:27,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 11:42:27,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 11:42:27,612 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:42:27,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:27,612 INFO L85 PathProgramCache]: Analyzing trace with hash -164360022, now seen corresponding path program 4 times [2023-08-30 11:42:27,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:27,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056088559] [2023-08-30 11:42:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:27,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:27,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:27,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056088559] [2023-08-30 11:42:27,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056088559] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:42:27,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230081825] [2023-08-30 11:42:27,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 11:42:27,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:27,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:42:27,749 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:42:27,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 11:42:27,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 11:42:27,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:42:27,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 11:42:27,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:42:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:28,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:42:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:28,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230081825] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:42:28,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:42:28,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-30 11:42:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774043362] [2023-08-30 11:42:28,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:42:28,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 11:42:28,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:42:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 11:42:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-08-30 11:42:28,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 11:42:28,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 47 transitions, 249 flow. Second operand has 24 states, 24 states have (on average 142.33333333333334) internal successors, (3416), 24 states have internal predecessors, (3416), 0 states have call successors, (0), 0 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 11:42:28,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:42:28,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 11:42:28,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:30,528 INFO L130 PetriNetUnfolder]: 20277/27856 cut-off events. [2023-08-30 11:42:30,529 INFO L131 PetriNetUnfolder]: For 48750/48750 co-relation queries the response was YES. [2023-08-30 11:42:30,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98659 conditions, 27856 events. 20277/27856 cut-off events. For 48750/48750 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 150823 event pairs, 10109 based on Foata normal form. 1336/29192 useless extension candidates. Maximal degree in co-relation 98636. Up to 15529 conditions per place. [2023-08-30 11:42:30,651 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 42 selfloop transitions, 5 changer transitions 124/171 dead transitions. [2023-08-30 11:42:30,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 171 transitions, 1100 flow [2023-08-30 11:42:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 11:42:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 11:42:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1674 transitions. [2023-08-30 11:42:30,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625587178778668 [2023-08-30 11:42:30,652 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1674 transitions. [2023-08-30 11:42:30,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1674 transitions. [2023-08-30 11:42:30,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:30,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1674 transitions. [2023-08-30 11:42:30,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 152.1818181818182) internal successors, (1674), 11 states have internal predecessors, (1674), 0 states have call successors, (0), 0 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 11:42:30,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 329.0) internal successors, (3948), 12 states have internal predecessors, (3948), 0 states have call successors, (0), 0 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 11:42:30,656 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 329.0) internal successors, (3948), 12 states have internal predecessors, (3948), 0 states have call successors, (0), 0 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 11:42:30,656 INFO L175 Difference]: Start difference. First operand has 79 places, 47 transitions, 249 flow. Second operand 11 states and 1674 transitions. [2023-08-30 11:42:30,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 171 transitions, 1100 flow [2023-08-30 11:42:31,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 171 transitions, 1048 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-30 11:42:31,374 INFO L231 Difference]: Finished difference. Result has 87 places, 47 transitions, 251 flow [2023-08-30 11:42:31,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=251, PETRI_PLACES=87, PETRI_TRANSITIONS=47} [2023-08-30 11:42:31,374 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 37 predicate places. [2023-08-30 11:42:31,375 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 47 transitions, 251 flow [2023-08-30 11:42:31,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 142.33333333333334) internal successors, (3416), 24 states have internal predecessors, (3416), 0 states have call successors, (0), 0 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 11:42:31,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:31,375 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:42:31,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 11:42:31,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 11:42:31,577 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:42:31,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:31,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1795808118, now seen corresponding path program 5 times [2023-08-30 11:42:31,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:31,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594390450] [2023-08-30 11:42:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:31,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:32,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:32,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594390450] [2023-08-30 11:42:32,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594390450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:42:32,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435862335] [2023-08-30 11:42:32,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 11:42:32,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:32,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:42:32,273 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:42:32,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 11:42:32,409 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 11:42:32,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:42:32,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-30 11:42:32,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:42:32,528 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 11:42:32,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:32,566 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 11:42:32,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:32,595 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 11:42:32,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:32,624 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 11:42:32,640 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 11:42:32,667 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 11:42:32,691 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 11:42:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:32,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:42:32,823 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1415 (Array Int Int)) (v_ArrVal_1414 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1414) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1415) c_~A~0.base) (+ c_~A~0.offset 12)) 2147483649)) is different from false [2023-08-30 11:42:34,937 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:34,938 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 11:42:34,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:34,945 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 277 treesize of output 265 [2023-08-30 11:42:34,971 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 11:42:34,975 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 11:42:34,980 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 11:42:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:35,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435862335] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:42:35,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:42:35,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-30 11:42:35,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170135410] [2023-08-30 11:42:35,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:42:35,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-30 11:42:35,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:42:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-30 11:42:35,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1061, Unknown=13, NotChecked=66, Total=1260 [2023-08-30 11:42:35,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 11:42:35,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 47 transitions, 251 flow. Second operand has 36 states, 36 states have (on average 118.27777777777777) internal successors, (4258), 36 states have internal predecessors, (4258), 0 states have call successors, (0), 0 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 11:42:35,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:42:35,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 11:42:35,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:37,073 INFO L130 PetriNetUnfolder]: 11550/15724 cut-off events. [2023-08-30 11:42:37,073 INFO L131 PetriNetUnfolder]: For 30899/30899 co-relation queries the response was YES. [2023-08-30 11:42:37,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55579 conditions, 15724 events. 11550/15724 cut-off events. For 30899/30899 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 75431 event pairs, 5625 based on Foata normal form. 48/15772 useless extension candidates. Maximal degree in co-relation 55550. Up to 14389 conditions per place. [2023-08-30 11:42:37,165 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 99 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2023-08-30 11:42:37,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 115 transitions, 783 flow [2023-08-30 11:42:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:42:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:42:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1487 transitions. [2023-08-30 11:42:37,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37664640324214793 [2023-08-30 11:42:37,167 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1487 transitions. [2023-08-30 11:42:37,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1487 transitions. [2023-08-30 11:42:37,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:37,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1487 transitions. [2023-08-30 11:42:37,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 123.91666666666667) internal successors, (1487), 12 states have internal predecessors, (1487), 0 states have call successors, (0), 0 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 11:42:37,171 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 11:42:37,171 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 11:42:37,171 INFO L175 Difference]: Start difference. First operand has 87 places, 47 transitions, 251 flow. Second operand 12 states and 1487 transitions. [2023-08-30 11:42:37,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 115 transitions, 783 flow [2023-08-30 11:42:37,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 115 transitions, 745 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-08-30 11:42:37,364 INFO L231 Difference]: Finished difference. Result has 84 places, 49 transitions, 272 flow [2023-08-30 11:42:37,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=84, PETRI_TRANSITIONS=49} [2023-08-30 11:42:37,364 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2023-08-30 11:42:37,364 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 49 transitions, 272 flow [2023-08-30 11:42:37,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 118.27777777777777) internal successors, (4258), 36 states have internal predecessors, (4258), 0 states have call successors, (0), 0 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 11:42:37,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:37,365 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:42:37,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-30 11:42:37,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 11:42:37,566 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:42:37,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash -107582672, now seen corresponding path program 3 times [2023-08-30 11:42:37,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:37,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605875107] [2023-08-30 11:42:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:37,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:38,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:38,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605875107] [2023-08-30 11:42:38,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605875107] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:42:38,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778931857] [2023-08-30 11:42:38,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 11:42:38,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:38,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:42:38,153 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:42:38,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 11:42:38,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 11:42:38,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:42:38,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-30 11:42:38,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:42:38,567 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 11:42:38,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:38,620 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 11:42:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:38,669 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 11:42:38,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:38,704 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 11:42:38,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:38,736 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 11:42:38,747 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 11:42:38,771 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 11:42:38,795 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 11:42:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:38,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:42:38,910 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1511 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1511) c_~A~0.base) (+ c_~A~0.offset 12)) 2147483649)) is different from false [2023-08-30 11:42:41,092 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:41,092 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 11:42:41,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:41,104 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 549 treesize of output 537 [2023-08-30 11:42:41,126 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 126 treesize of output 94 [2023-08-30 11:42:41,147 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 127 treesize of output 111 [2023-08-30 11:42:41,152 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 111 treesize of output 103 [2023-08-30 11:42:41,158 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 11:42:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:41,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778931857] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:42:41,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:42:41,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-30 11:42:41,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251855243] [2023-08-30 11:42:41,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:42:41,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-30 11:42:41,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:42:41,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-30 11:42:41,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1256, Unknown=15, NotChecked=72, Total=1482 [2023-08-30 11:42:41,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 11:42:41,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 49 transitions, 272 flow. Second operand has 39 states, 39 states have (on average 115.28205128205128) internal successors, (4496), 39 states have internal predecessors, (4496), 0 states have call successors, (0), 0 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 11:42:41,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:42:41,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 11:42:41,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:43,742 INFO L130 PetriNetUnfolder]: 13272/18066 cut-off events. [2023-08-30 11:42:43,742 INFO L131 PetriNetUnfolder]: For 34271/34271 co-relation queries the response was YES. [2023-08-30 11:42:43,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61995 conditions, 18066 events. 13272/18066 cut-off events. For 34271/34271 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 90194 event pairs, 4124 based on Foata normal form. 620/18686 useless extension candidates. Maximal degree in co-relation 61970. Up to 7924 conditions per place. [2023-08-30 11:42:43,834 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 118 selfloop transitions, 16 changer transitions 0/134 dead transitions. [2023-08-30 11:42:43,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 134 transitions, 854 flow [2023-08-30 11:42:43,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:42:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:42:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1468 transitions. [2023-08-30 11:42:43,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3718338399189463 [2023-08-30 11:42:43,836 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1468 transitions. [2023-08-30 11:42:43,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1468 transitions. [2023-08-30 11:42:43,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:43,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1468 transitions. [2023-08-30 11:42:43,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 122.33333333333333) internal successors, (1468), 12 states have internal predecessors, (1468), 0 states have call successors, (0), 0 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 11:42:43,840 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 11:42:43,840 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 11:42:43,840 INFO L175 Difference]: Start difference. First operand has 84 places, 49 transitions, 272 flow. Second operand 12 states and 1468 transitions. [2023-08-30 11:42:43,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 134 transitions, 854 flow [2023-08-30 11:42:43,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 134 transitions, 812 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-08-30 11:42:43,962 INFO L231 Difference]: Finished difference. Result has 85 places, 50 transitions, 280 flow [2023-08-30 11:42:43,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=280, PETRI_PLACES=85, PETRI_TRANSITIONS=50} [2023-08-30 11:42:43,963 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 35 predicate places. [2023-08-30 11:42:43,963 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 50 transitions, 280 flow [2023-08-30 11:42:43,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 115.28205128205128) internal successors, (4496), 39 states have internal predecessors, (4496), 0 states have call successors, (0), 0 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 11:42:43,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:43,964 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:42:43,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-30 11:42:44,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:44,172 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:42:44,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:44,173 INFO L85 PathProgramCache]: Analyzing trace with hash 164527148, now seen corresponding path program 6 times [2023-08-30 11:42:44,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:44,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80773710] [2023-08-30 11:42:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:44,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:44,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:44,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80773710] [2023-08-30 11:42:44,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80773710] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:42:44,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004416132] [2023-08-30 11:42:44,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 11:42:44,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:44,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:42:44,349 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:42:44,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 11:42:44,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 11:42:44,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:42:44,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 11:42:44,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:42:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:44,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:42:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:44,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004416132] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:42:44,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:42:44,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-30 11:42:44,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809764019] [2023-08-30 11:42:44,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:42:44,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 11:42:44,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:42:44,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 11:42:44,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-08-30 11:42:45,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 11:42:45,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 50 transitions, 280 flow. Second operand has 29 states, 29 states have (on average 142.27586206896552) internal successors, (4126), 29 states have internal predecessors, (4126), 0 states have call successors, (0), 0 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 11:42:45,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:42:45,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 11:42:45,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:48,032 INFO L130 PetriNetUnfolder]: 24009/32925 cut-off events. [2023-08-30 11:42:48,032 INFO L131 PetriNetUnfolder]: For 80464/80464 co-relation queries the response was YES. [2023-08-30 11:42:48,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118600 conditions, 32925 events. 24009/32925 cut-off events. For 80464/80464 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 180757 event pairs, 10082 based on Foata normal form. 1336/34261 useless extension candidates. Maximal degree in co-relation 118575. Up to 18063 conditions per place. [2023-08-30 11:42:48,273 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 45 selfloop transitions, 6 changer transitions 148/199 dead transitions. [2023-08-30 11:42:48,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 199 transitions, 1294 flow [2023-08-30 11:42:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 11:42:48,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 11:42:48,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1974 transitions. [2023-08-30 11:42:48,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2023-08-30 11:42:48,275 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1974 transitions. [2023-08-30 11:42:48,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1974 transitions. [2023-08-30 11:42:48,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:48,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1974 transitions. [2023-08-30 11:42:48,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 151.84615384615384) internal successors, (1974), 13 states have internal predecessors, (1974), 0 states have call successors, (0), 0 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 11:42:48,279 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 11:42:48,280 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 11:42:48,280 INFO L175 Difference]: Start difference. First operand has 85 places, 50 transitions, 280 flow. Second operand 13 states and 1974 transitions. [2023-08-30 11:42:48,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 199 transitions, 1294 flow [2023-08-30 11:42:48,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 199 transitions, 1228 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-08-30 11:42:48,598 INFO L231 Difference]: Finished difference. Result has 94 places, 51 transitions, 286 flow [2023-08-30 11:42:48,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=286, PETRI_PLACES=94, PETRI_TRANSITIONS=51} [2023-08-30 11:42:48,599 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2023-08-30 11:42:48,599 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 51 transitions, 286 flow [2023-08-30 11:42:48,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 142.27586206896552) internal successors, (4126), 29 states have internal predecessors, (4126), 0 states have call successors, (0), 0 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 11:42:48,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:48,600 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:42:48,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-30 11:42:48,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 11:42:48,801 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:42:48,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:48,801 INFO L85 PathProgramCache]: Analyzing trace with hash 5969932, now seen corresponding path program 7 times [2023-08-30 11:42:48,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:48,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602102654] [2023-08-30 11:42:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:48,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:49,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:49,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602102654] [2023-08-30 11:42:49,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602102654] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:42:49,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499389503] [2023-08-30 11:42:49,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 11:42:49,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:49,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:42:49,465 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:42:49,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 11:42:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:49,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-30 11:42:49,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:42:49,848 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 11:42:49,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:49,904 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 11:42:49,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:49,954 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 11:42:49,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:49,999 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 11:42:50,071 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 11:42:50,114 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 23 treesize of output 22 [2023-08-30 11:42:50,161 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 23 treesize of output 22 [2023-08-30 11:42:50,207 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 23 treesize of output 22 [2023-08-30 11:42:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:50,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:42:50,462 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1694 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1694) c_~A~0.base) (+ c_~A~0.offset 16)) 2147483649)) is different from false [2023-08-30 11:42:50,469 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1694 (Array Int Int)) (v_ArrVal_1693 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1693) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1694) c_~A~0.base) (+ c_~A~0.offset 16)) 2147483649)) is different from false [2023-08-30 11:42:54,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:54,590 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 11:42:54,600 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:42:54,601 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 1105 treesize of output 1057 [2023-08-30 11:42:54,616 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 11:42:54,623 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 55 treesize of output 47 [2023-08-30 11:42:54,628 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 42 [2023-08-30 11:42:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:54,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499389503] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:42:54,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:42:54,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2023-08-30 11:42:54,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399924910] [2023-08-30 11:42:54,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:42:54,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-30 11:42:54,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:42:54,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-30 11:42:54,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1585, Unknown=9, NotChecked=162, Total=1892 [2023-08-30 11:42:54,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 11:42:54,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 51 transitions, 286 flow. Second operand has 44 states, 44 states have (on average 118.22727272727273) internal successors, (5202), 44 states have internal predecessors, (5202), 0 states have call successors, (0), 0 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 11:42:54,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:42:54,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 11:42:54,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:57,910 INFO L130 PetriNetUnfolder]: 13416/18259 cut-off events. [2023-08-30 11:42:57,911 INFO L131 PetriNetUnfolder]: For 40601/40601 co-relation queries the response was YES. [2023-08-30 11:42:57,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65650 conditions, 18259 events. 13416/18259 cut-off events. For 40601/40601 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 88869 event pairs, 5451 based on Foata normal form. 48/18307 useless extension candidates. Maximal degree in co-relation 65618. Up to 16779 conditions per place. [2023-08-30 11:42:58,056 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 113 selfloop transitions, 19 changer transitions 0/132 dead transitions. [2023-08-30 11:42:58,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 132 transitions, 912 flow [2023-08-30 11:42:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 11:42:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 11:42:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1732 transitions. [2023-08-30 11:42:58,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760312635692575 [2023-08-30 11:42:58,058 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1732 transitions. [2023-08-30 11:42:58,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1732 transitions. [2023-08-30 11:42:58,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:58,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1732 transitions. [2023-08-30 11:42:58,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 123.71428571428571) internal successors, (1732), 14 states have internal predecessors, (1732), 0 states have call successors, (0), 0 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 11:42:58,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 329.0) internal successors, (4935), 15 states have internal predecessors, (4935), 0 states have call successors, (0), 0 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 11:42:58,064 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 329.0) internal successors, (4935), 15 states have internal predecessors, (4935), 0 states have call successors, (0), 0 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 11:42:58,064 INFO L175 Difference]: Start difference. First operand has 94 places, 51 transitions, 286 flow. Second operand 14 states and 1732 transitions. [2023-08-30 11:42:58,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 132 transitions, 912 flow [2023-08-30 11:42:58,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 132 transitions, 868 flow, removed 17 selfloop flow, removed 11 redundant places. [2023-08-30 11:42:58,361 INFO L231 Difference]: Finished difference. Result has 91 places, 53 transitions, 309 flow [2023-08-30 11:42:58,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=309, PETRI_PLACES=91, PETRI_TRANSITIONS=53} [2023-08-30 11:42:58,362 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 41 predicate places. [2023-08-30 11:42:58,362 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 53 transitions, 309 flow [2023-08-30 11:42:58,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 118.22727272727273) internal successors, (5202), 44 states have internal predecessors, (5202), 0 states have call successors, (0), 0 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 11:42:58,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:58,363 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:42:58,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 11:42:58,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:58,564 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:42:58,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash 162907346, now seen corresponding path program 4 times [2023-08-30 11:42:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:58,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560103954] [2023-08-30 11:42:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:58,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:59,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:59,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560103954] [2023-08-30 11:42:59,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560103954] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:42:59,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659297186] [2023-08-30 11:42:59,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 11:42:59,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:59,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:42:59,388 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:42:59,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 11:42:59,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 11:42:59,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:42:59,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-30 11:42:59,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:42:59,718 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 11:42:59,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:59,770 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 11:42:59,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:59,817 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 11:42:59,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:59,863 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 11:42:59,934 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 11:42:59,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:42:59,973 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 11:43:00,006 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 23 treesize of output 22 [2023-08-30 11:43:00,041 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 23 treesize of output 22 [2023-08-30 11:43:00,076 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 23 treesize of output 22 [2023-08-30 11:43:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:00,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:43:00,352 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1802 (Array Int Int)) (v_ArrVal_1801 Int)) (< (select (select (store (store |c_#memory_int| c_~A~0.base (store (select |c_#memory_int| c_~A~0.base) c_~A~0.offset v_ArrVal_1801)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1802) c_~A~0.base) (+ c_~A~0.offset 16)) 2147483649)) is different from false [2023-08-30 11:43:00,361 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1802 (Array Int Int)) (v_ArrVal_1799 (Array Int Int)) (v_ArrVal_1801 Int)) (< (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1799))) (store .cse0 c_~A~0.base (store (select .cse0 c_~A~0.base) c_~A~0.offset v_ArrVal_1801))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1802) c_~A~0.base) (+ c_~A~0.offset 16)) 2147483649)) is different from false [2023-08-30 11:43:00,482 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1802 (Array Int Int)) (v_ArrVal_1799 (Array Int Int)) (v_ArrVal_1798 (Array Int Int)) (v_ArrVal_1797 (Array Int Int)) (v_ArrVal_1801 Int)) (< (select (select (store (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1797) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1798) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1799))) (store .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| v_ArrVal_1801))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1802) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649)) is different from false [2023-08-30 11:43:00,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:43:00,493 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 62 treesize of output 51 [2023-08-30 11:43:00,504 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:43:00,504 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 2193 treesize of output 2145 [2023-08-30 11:43:00,531 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 226 [2023-08-30 11:43:00,539 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 111 treesize of output 107 [2023-08-30 11:43:00,548 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 107 treesize of output 99 [2023-08-30 11:43:00,554 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 11:43:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-30 11:43:00,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659297186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:43:00,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:43:00,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2023-08-30 11:43:00,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347597549] [2023-08-30 11:43:00,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:43:00,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-08-30 11:43:00,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:00,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-08-30 11:43:00,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1754, Unknown=21, NotChecked=258, Total=2162 [2023-08-30 11:43:01,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 11:43:01,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 53 transitions, 309 flow. Second operand has 47 states, 47 states have (on average 115.2127659574468) internal successors, (5415), 47 states have internal predecessors, (5415), 0 states have call successors, (0), 0 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 11:43:01,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:01,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 11:43:01,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:04,746 INFO L130 PetriNetUnfolder]: 15138/20601 cut-off events. [2023-08-30 11:43:04,747 INFO L131 PetriNetUnfolder]: For 47506/47506 co-relation queries the response was YES. [2023-08-30 11:43:04,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72113 conditions, 20601 events. 15138/20601 cut-off events. For 47506/47506 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 104110 event pairs, 4124 based on Foata normal form. 620/21221 useless extension candidates. Maximal degree in co-relation 72086. Up to 7924 conditions per place. [2023-08-30 11:43:04,912 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 140 selfloop transitions, 19 changer transitions 0/159 dead transitions. [2023-08-30 11:43:04,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 159 transitions, 1019 flow [2023-08-30 11:43:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 11:43:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 11:43:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1714 transitions. [2023-08-30 11:43:04,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721233174120712 [2023-08-30 11:43:04,914 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1714 transitions. [2023-08-30 11:43:04,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1714 transitions. [2023-08-30 11:43:04,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:04,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1714 transitions. [2023-08-30 11:43:04,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 122.42857142857143) internal successors, (1714), 14 states have internal predecessors, (1714), 0 states have call successors, (0), 0 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 11:43:04,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 329.0) internal successors, (4935), 15 states have internal predecessors, (4935), 0 states have call successors, (0), 0 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 11:43:04,918 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 329.0) internal successors, (4935), 15 states have internal predecessors, (4935), 0 states have call successors, (0), 0 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 11:43:04,918 INFO L175 Difference]: Start difference. First operand has 91 places, 53 transitions, 309 flow. Second operand 14 states and 1714 transitions. [2023-08-30 11:43:04,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 159 transitions, 1019 flow [2023-08-30 11:43:05,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 159 transitions, 973 flow, removed 5 selfloop flow, removed 12 redundant places. [2023-08-30 11:43:05,191 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 321 flow [2023-08-30 11:43:05,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=321, PETRI_PLACES=93, PETRI_TRANSITIONS=54} [2023-08-30 11:43:05,191 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-08-30 11:43:05,192 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 321 flow [2023-08-30 11:43:05,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 115.2127659574468) internal successors, (5415), 47 states have internal predecessors, (5415), 0 states have call successors, (0), 0 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 11:43:05,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:05,192 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:43:05,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 11:43:05,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:05,397 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 11:43:05,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash 185071850, now seen corresponding path program 8 times [2023-08-30 11:43:05,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:05,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363676310] [2023-08-30 11:43:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:05,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:05,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363676310] [2023-08-30 11:43:05,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363676310] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:43:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729185597] [2023-08-30 11:43:05,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:43:05,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:05,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:43:05,629 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:43:05,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 11:43:05,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 11:43:05,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:43:05,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 11:43:05,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:43:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:06,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:43:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:06,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729185597] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:43:06,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:43:06,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2023-08-30 11:43:06,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320600346] [2023-08-30 11:43:06,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:43:06,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 11:43:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:06,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 11:43:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=836, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 11:43:06,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 11:43:06,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 54 transitions, 321 flow. Second operand has 34 states, 34 states have (on average 142.23529411764707) internal successors, (4836), 34 states have internal predecessors, (4836), 0 states have call successors, (0), 0 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 11:43:06,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:06,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 11:43:06,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand