./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:56:54,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:56:54,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:56:54,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:56:54,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:56:54,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:56:54,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:56:54,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:56:54,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:56:54,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:56:54,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:56:54,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:56:54,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:56:54,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:56:54,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:56:54,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:56:54,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:56:54,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:56:54,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:56:54,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:56:54,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:56:54,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:56:54,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:56:54,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:56:54,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:56:54,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:56:54,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:56:54,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:56:54,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:56:54,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:56:54,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:56:54,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:56:54,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:56:54,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:56:54,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:56:54,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:56:54,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:56:54,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:56:54,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:56:54,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:56:54,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:56:54,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:56:54,544 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:56:54,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:56:54,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:56:54,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:56:54,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:56:54,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:56:54,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:56:54,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:56:54,548 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:56:54,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:56:54,549 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:56:54,549 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:56:54,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:56:54,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:56:54,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:56:54,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:56:54,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:56:54,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:56:54,551 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:56:54,551 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:56:54,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:56:54,551 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:56:54,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:56:54,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:56:54,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:56:54,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:56:54,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:56:54,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:56:54,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:56:54,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:56:54,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:56:54,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:56:54,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:56:54,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:56:54,554 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:56:54,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:56:54,554 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:56:54,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:56:54,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:56:54,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:56:54,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:56:54,924 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:56:54,924 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:56:54,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-09-01 04:56:56,214 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:56:56,473 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:56:56,474 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-09-01 04:56:56,485 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2078f07d2/d0ab4ed6385147f58ed0bdd06a2cbe13/FLAG93e635357 [2023-09-01 04:56:56,500 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2078f07d2/d0ab4ed6385147f58ed0bdd06a2cbe13 [2023-09-01 04:56:56,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:56:56,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:56:56,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:56:56,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:56:56,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:56:56,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:56:56" (1/1) ... [2023-09-01 04:56:56,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0321f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:56, skipping insertion in model container [2023-09-01 04:56:56,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:56:56" (1/1) ... [2023-09-01 04:56:56,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:56:56,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:56:56,913 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-09-01 04:56:56,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:56:56,922 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:56:56,967 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-09-01 04:56:56,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:56:57,001 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:56:57,001 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:56:57,007 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:56:57,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57 WrapperNode [2023-09-01 04:56:57,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:56:57,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:56:57,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:56:57,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:56:57,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,066 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-09-01 04:56:57,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:56:57,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:56:57,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:56:57,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:56:57,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:56:57,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:56:57,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:56:57,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:56:57,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (1/1) ... [2023-09-01 04:56:57,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:56:57,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:57,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 04:56:57,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 04:56:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 04:56:57,185 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 04:56:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 04:56:57,186 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 04:56:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:56:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 04:56:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:56:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:56:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:56:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:56:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 04:56:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:56:57,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:56:57,188 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 04:56:57,332 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:56:57,333 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:56:57,531 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:56:57,551 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:56:57,551 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:56:57,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:56:57 BoogieIcfgContainer [2023-09-01 04:56:57,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:56:57,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:56:57,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:56:57,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:56:57,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:56:56" (1/3) ... [2023-09-01 04:56:57,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199be09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:56:57, skipping insertion in model container [2023-09-01 04:56:57,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:57" (2/3) ... [2023-09-01 04:56:57,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199be09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:56:57, skipping insertion in model container [2023-09-01 04:56:57,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:56:57" (3/3) ... [2023-09-01 04:56:57,560 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-09-01 04:56:57,567 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:56:57,576 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:56:57,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 04:56:57,576 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:56:57,644 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:56:57,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 164 flow [2023-09-01 04:56:57,718 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2023-09-01 04:56:57,719 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:56:57,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-09-01 04:56:57,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 77 transitions, 164 flow [2023-09-01 04:56:57,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:57,731 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:56:57,738 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:57,741 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:57,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:57,758 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2023-09-01 04:56:57,759 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:56:57,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-09-01 04:56:57,761 INFO L119 LiptonReduction]: Number of co-enabled transitions 1802 [2023-09-01 04:56:59,913 INFO L134 LiptonReduction]: Checked pairs total: 1843 [2023-09-01 04:56:59,914 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-09-01 04:56:59,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:56:59,932 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;@493b5f46, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:56:59,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 04:56:59,935 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-09-01 04:56:59,935 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:56:59,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:59,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 04:56:59,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:59,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:59,941 INFO L85 PathProgramCache]: Analyzing trace with hash 9842129, now seen corresponding path program 1 times [2023-09-01 04:56:59,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:59,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115551653] [2023-09-01 04:56:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:59,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:00,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115551653] [2023-09-01 04:57:00,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115551653] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:00,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:00,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:57:00,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147076437] [2023-09-01 04:57:00,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:00,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:57:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:57:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:57:00,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:57:00,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:00,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:57:00,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:00,321 INFO L130 PetriNetUnfolder]: 300/479 cut-off events. [2023-09-01 04:57:00,323 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 04:57:00,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 479 events. 300/479 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1808 event pairs, 115 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 964. Up to 256 conditions per place. [2023-09-01 04:57:00,334 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-09-01 04:57:00,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 126 flow [2023-09-01 04:57:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:57:00,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:57:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-09-01 04:57:00,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2023-09-01 04:57:00,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-09-01 04:57:00,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-09-01 04:57:00,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:00,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-09-01 04:57:00,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,362 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 48 flow. Second operand 3 states and 232 transitions. [2023-09-01 04:57:00,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 126 flow [2023-09-01 04:57:00,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:57:00,366 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 70 flow [2023-09-01 04:57:00,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-09-01 04:57:00,370 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-09-01 04:57:00,371 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 70 flow [2023-09-01 04:57:00,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:00,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 04:57:00,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:57:00,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:00,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash 9842130, now seen corresponding path program 1 times [2023-09-01 04:57:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:00,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427706043] [2023-09-01 04:57:00,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427706043] [2023-09-01 04:57:00,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427706043] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:00,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:00,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:57:00,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278483021] [2023-09-01 04:57:00,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:00,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:57:00,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:57:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:57:00,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:57:00,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:00,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:57:00,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:00,525 INFO L130 PetriNetUnfolder]: 291/480 cut-off events. [2023-09-01 04:57:00,526 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-09-01 04:57:00,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 480 events. 291/480 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1878 event pairs, 99 based on Foata normal form. 17/325 useless extension candidates. Maximal degree in co-relation 1111. Up to 281 conditions per place. [2023-09-01 04:57:00,530 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-09-01 04:57:00,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 170 flow [2023-09-01 04:57:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:57:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:57:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-09-01 04:57:00,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-09-01 04:57:00,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-09-01 04:57:00,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-09-01 04:57:00,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:00,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-09-01 04:57:00,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,549 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 70 flow. Second operand 3 states and 225 transitions. [2023-09-01 04:57:00,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 170 flow [2023-09-01 04:57:00,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:57:00,551 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 100 flow [2023-09-01 04:57:00,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2023-09-01 04:57:00,552 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-09-01 04:57:00,553 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 100 flow [2023-09-01 04:57:00,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:00,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 04:57:00,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:57:00,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:00,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:00,557 INFO L85 PathProgramCache]: Analyzing trace with hash 9842166, now seen corresponding path program 1 times [2023-09-01 04:57:00,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:00,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755917560] [2023-09-01 04:57:00,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:00,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:00,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755917560] [2023-09-01 04:57:00,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755917560] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:00,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:00,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:00,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208660683] [2023-09-01 04:57:00,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:00,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:57:00,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:57:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:57:00,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-09-01 04:57:00,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:00,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-09-01 04:57:00,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:00,717 INFO L130 PetriNetUnfolder]: 416/697 cut-off events. [2023-09-01 04:57:00,718 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-09-01 04:57:00,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 697 events. 416/697 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3177 event pairs, 223 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 1748. Up to 481 conditions per place. [2023-09-01 04:57:00,722 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-09-01 04:57:00,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 269 flow [2023-09-01 04:57:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:57:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:57:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-09-01 04:57:00,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-09-01 04:57:00,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-09-01 04:57:00,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-09-01 04:57:00,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:00,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-09-01 04:57:00,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,747 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 100 flow. Second operand 3 states and 225 transitions. [2023-09-01 04:57:00,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 43 transitions, 269 flow [2023-09-01 04:57:00,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:57:00,751 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 108 flow [2023-09-01 04:57:00,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-09-01 04:57:00,752 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-09-01 04:57:00,755 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 108 flow [2023-09-01 04:57:00,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:00,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:00,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:57:00,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:57:00,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:00,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:00,759 INFO L85 PathProgramCache]: Analyzing trace with hash 305107525, now seen corresponding path program 1 times [2023-09-01 04:57:00,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:00,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368233765] [2023-09-01 04:57:00,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:00,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:00,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:00,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368233765] [2023-09-01 04:57:00,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368233765] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:00,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707022896] [2023-09-01 04:57:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:00,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:00,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:00,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:00,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 04:57:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:00,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:57:00,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:01,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:57:01,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707022896] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:01,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:57:01,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:57:01,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996870056] [2023-09-01 04:57:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:01,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:01,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:01,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:01,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:57:01,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-09-01 04:57:01,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:01,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-09-01 04:57:01,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:01,161 INFO L130 PetriNetUnfolder]: 361/610 cut-off events. [2023-09-01 04:57:01,169 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2023-09-01 04:57:01,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 610 events. 361/610 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2863 event pairs, 18 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1666. Up to 336 conditions per place. [2023-09-01 04:57:01,174 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-09-01 04:57:01,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 330 flow [2023-09-01 04:57:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:57:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:57:01,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-09-01 04:57:01,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016891891891891 [2023-09-01 04:57:01,176 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-09-01 04:57:01,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-09-01 04:57:01,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:01,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-09-01 04:57:01,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,180 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,180 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 108 flow. Second operand 4 states and 297 transitions. [2023-09-01 04:57:01,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 330 flow [2023-09-01 04:57:01,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:57:01,184 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 106 flow [2023-09-01 04:57:01,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-09-01 04:57:01,185 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-09-01 04:57:01,186 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 106 flow [2023-09-01 04:57:01,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:01,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:01,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 04:57:01,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:01,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:01,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:01,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1174384726, now seen corresponding path program 1 times [2023-09-01 04:57:01,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:01,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666410546] [2023-09-01 04:57:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:01,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:01,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:01,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666410546] [2023-09-01 04:57:01,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666410546] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:01,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162392645] [2023-09-01 04:57:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:01,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:01,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:01,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:01,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 04:57:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:01,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:57:01,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:01,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:57:01,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162392645] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:01,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:57:01,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:57:01,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706283226] [2023-09-01 04:57:01,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:01,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:01,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:01,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:01,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:57:01,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-09-01 04:57:01,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:01,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-09-01 04:57:01,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:01,640 INFO L130 PetriNetUnfolder]: 301/514 cut-off events. [2023-09-01 04:57:01,640 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2023-09-01 04:57:01,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 514 events. 301/514 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2134 event pairs, 48 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 1374. Up to 380 conditions per place. [2023-09-01 04:57:01,643 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 32 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-09-01 04:57:01,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 206 flow [2023-09-01 04:57:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:57:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:57:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2023-09-01 04:57:01,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-09-01 04:57:01,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 288 transitions. [2023-09-01 04:57:01,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 288 transitions. [2023-09-01 04:57:01,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:01,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 288 transitions. [2023-09-01 04:57:01,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,649 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,649 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 106 flow. Second operand 4 states and 288 transitions. [2023-09-01 04:57:01,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 206 flow [2023-09-01 04:57:01,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:57:01,651 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 87 flow [2023-09-01 04:57:01,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-09-01 04:57:01,651 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-09-01 04:57:01,652 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 87 flow [2023-09-01 04:57:01,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:01,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:57:01,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:01,858 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 [2023-09-01 04:57:01,858 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:01,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:01,859 INFO L85 PathProgramCache]: Analyzing trace with hash 869167325, now seen corresponding path program 1 times [2023-09-01 04:57:01,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:01,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767750198] [2023-09-01 04:57:01,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:01,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:01,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:01,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767750198] [2023-09-01 04:57:01,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767750198] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:01,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:01,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:57:01,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475672206] [2023-09-01 04:57:01,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:01,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:57:01,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:01,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:57:01,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:57:01,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:57:01,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:01,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:57:01,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:01,943 INFO L130 PetriNetUnfolder]: 259/454 cut-off events. [2023-09-01 04:57:01,943 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2023-09-01 04:57:01,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 454 events. 259/454 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1942 event pairs, 103 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 1276. Up to 239 conditions per place. [2023-09-01 04:57:01,953 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-09-01 04:57:01,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 223 flow [2023-09-01 04:57:01,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:57:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:57:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-09-01 04:57:01,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2023-09-01 04:57:01,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-09-01 04:57:01,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-09-01 04:57:01,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:01,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-09-01 04:57:01,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,962 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 87 flow. Second operand 3 states and 224 transitions. [2023-09-01 04:57:01,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 223 flow [2023-09-01 04:57:01,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:57:01,964 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 114 flow [2023-09-01 04:57:01,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-09-01 04:57:01,967 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-09-01 04:57:01,967 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 114 flow [2023-09-01 04:57:01,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:01,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:01,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:57:01,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 04:57:01,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:01,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:01,968 INFO L85 PathProgramCache]: Analyzing trace with hash 869167324, now seen corresponding path program 1 times [2023-09-01 04:57:01,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59927673] [2023-09-01 04:57:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:01,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59927673] [2023-09-01 04:57:02,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59927673] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:02,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:02,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:57:02,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400232745] [2023-09-01 04:57:02,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:02,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:57:02,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:02,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:57:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:57:02,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:57:02,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:02,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:57:02,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:02,093 INFO L130 PetriNetUnfolder]: 237/426 cut-off events. [2023-09-01 04:57:02,093 INFO L131 PetriNetUnfolder]: For 327/327 co-relation queries the response was YES. [2023-09-01 04:57:02,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 426 events. 237/426 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1842 event pairs, 75 based on Foata normal form. 24/450 useless extension candidates. Maximal degree in co-relation 1358. Up to 263 conditions per place. [2023-09-01 04:57:02,096 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-09-01 04:57:02,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 245 flow [2023-09-01 04:57:02,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:57:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:57:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-09-01 04:57:02,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022522522522522 [2023-09-01 04:57:02,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-09-01 04:57:02,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-09-01 04:57:02,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:02,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-09-01 04:57:02,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,100 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 114 flow. Second operand 3 states and 223 transitions. [2023-09-01 04:57:02,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 245 flow [2023-09-01 04:57:02,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:57:02,104 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 122 flow [2023-09-01 04:57:02,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2023-09-01 04:57:02,105 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-09-01 04:57:02,105 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 122 flow [2023-09-01 04:57:02,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:02,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:02,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:57:02,106 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:02,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:02,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877637, now seen corresponding path program 1 times [2023-09-01 04:57:02,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510986683] [2023-09-01 04:57:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:02,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:02,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510986683] [2023-09-01 04:57:02,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510986683] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:02,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:02,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:02,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955776194] [2023-09-01 04:57:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:02,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:02,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:02,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:02,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:57:02,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:02,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:02,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:02,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:02,284 INFO L130 PetriNetUnfolder]: 289/502 cut-off events. [2023-09-01 04:57:02,284 INFO L131 PetriNetUnfolder]: For 538/538 co-relation queries the response was YES. [2023-09-01 04:57:02,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 502 events. 289/502 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2096 event pairs, 65 based on Foata normal form. 24/526 useless extension candidates. Maximal degree in co-relation 1631. Up to 188 conditions per place. [2023-09-01 04:57:02,288 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 36 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-09-01 04:57:02,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 331 flow [2023-09-01 04:57:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:57:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:57:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 356 transitions. [2023-09-01 04:57:02,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2023-09-01 04:57:02,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 356 transitions. [2023-09-01 04:57:02,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 356 transitions. [2023-09-01 04:57:02,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:02,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 356 transitions. [2023-09-01 04:57:02,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,293 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,294 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 122 flow. Second operand 5 states and 356 transitions. [2023-09-01 04:57:02,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 331 flow [2023-09-01 04:57:02,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:57:02,296 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 219 flow [2023-09-01 04:57:02,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-09-01 04:57:02,300 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2023-09-01 04:57:02,301 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 219 flow [2023-09-01 04:57:02,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:02,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:02,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 04:57:02,302 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:02,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:02,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2077921346, now seen corresponding path program 1 times [2023-09-01 04:57:02,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:02,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57210192] [2023-09-01 04:57:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:02,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57210192] [2023-09-01 04:57:02,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57210192] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:02,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:02,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:02,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384551533] [2023-09-01 04:57:02,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:02,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:57:02,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:02,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:02,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:02,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:02,457 INFO L130 PetriNetUnfolder]: 301/532 cut-off events. [2023-09-01 04:57:02,458 INFO L131 PetriNetUnfolder]: For 1145/1145 co-relation queries the response was YES. [2023-09-01 04:57:02,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 532 events. 301/532 cut-off events. For 1145/1145 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2318 event pairs, 61 based on Foata normal form. 48/580 useless extension candidates. Maximal degree in co-relation 1966. Up to 216 conditions per place. [2023-09-01 04:57:02,462 INFO L137 encePairwiseOnDemand]: 141/148 looper letters, 43 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-09-01 04:57:02,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 438 flow [2023-09-01 04:57:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:57:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:57:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2023-09-01 04:57:02,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2023-09-01 04:57:02,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2023-09-01 04:57:02,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2023-09-01 04:57:02,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:02,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2023-09-01 04:57:02,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,467 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,467 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 219 flow. Second operand 5 states and 358 transitions. [2023-09-01 04:57:02,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 438 flow [2023-09-01 04:57:02,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 411 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 04:57:02,471 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 281 flow [2023-09-01 04:57:02,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-09-01 04:57:02,473 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-09-01 04:57:02,473 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 281 flow [2023-09-01 04:57:02,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:02,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:02,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:57:02,474 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:02,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877425, now seen corresponding path program 1 times [2023-09-01 04:57:02,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:02,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502693319] [2023-09-01 04:57:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:02,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502693319] [2023-09-01 04:57:02,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502693319] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:02,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:02,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:02,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071988457] [2023-09-01 04:57:02,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:02,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:02,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:02,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:02,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:57:02,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:02,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:02,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:02,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:02,643 INFO L130 PetriNetUnfolder]: 353/608 cut-off events. [2023-09-01 04:57:02,644 INFO L131 PetriNetUnfolder]: For 1644/1644 co-relation queries the response was YES. [2023-09-01 04:57:02,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 608 events. 353/608 cut-off events. For 1644/1644 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2647 event pairs, 63 based on Foata normal form. 24/632 useless extension candidates. Maximal degree in co-relation 2401. Up to 351 conditions per place. [2023-09-01 04:57:02,648 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 46 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2023-09-01 04:57:02,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 536 flow [2023-09-01 04:57:02,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:57:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:57:02,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 360 transitions. [2023-09-01 04:57:02,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-09-01 04:57:02,650 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 360 transitions. [2023-09-01 04:57:02,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 360 transitions. [2023-09-01 04:57:02,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:02,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 360 transitions. [2023-09-01 04:57:02,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,654 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 281 flow. Second operand 5 states and 360 transitions. [2023-09-01 04:57:02,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 536 flow [2023-09-01 04:57:02,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 532 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-09-01 04:57:02,658 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 387 flow [2023-09-01 04:57:02,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-09-01 04:57:02,660 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2023-09-01 04:57:02,660 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 387 flow [2023-09-01 04:57:02,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:02,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:02,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:57:02,661 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:02,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:02,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877424, now seen corresponding path program 1 times [2023-09-01 04:57:02,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:02,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656589265] [2023-09-01 04:57:02,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:02,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:02,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656589265] [2023-09-01 04:57:02,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656589265] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:02,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:02,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:02,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898823988] [2023-09-01 04:57:02,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:02,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:02,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:02,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:57:02,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:02,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:02,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:02,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:02,770 INFO L130 PetriNetUnfolder]: 252/432 cut-off events. [2023-09-01 04:57:02,771 INFO L131 PetriNetUnfolder]: For 1945/1945 co-relation queries the response was YES. [2023-09-01 04:57:02,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 432 events. 252/432 cut-off events. For 1945/1945 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1627 event pairs, 178 based on Foata normal form. 48/480 useless extension candidates. Maximal degree in co-relation 1798. Up to 432 conditions per place. [2023-09-01 04:57:02,774 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-09-01 04:57:02,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 28 transitions, 310 flow [2023-09-01 04:57:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:57:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:57:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-09-01 04:57:02,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2023-09-01 04:57:02,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-09-01 04:57:02,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-09-01 04:57:02,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:02,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-09-01 04:57:02,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,778 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 387 flow. Second operand 3 states and 205 transitions. [2023-09-01 04:57:02,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 28 transitions, 310 flow [2023-09-01 04:57:02,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 263 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-09-01 04:57:02,784 INFO L231 Difference]: Finished difference. Result has 45 places, 28 transitions, 209 flow [2023-09-01 04:57:02,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=45, PETRI_TRANSITIONS=28} [2023-09-01 04:57:02,785 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-09-01 04:57:02,785 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 28 transitions, 209 flow [2023-09-01 04:57:02,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:02,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:02,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:02,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 04:57:02,786 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:02,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash -8946286, now seen corresponding path program 1 times [2023-09-01 04:57:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:02,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167944484] [2023-09-01 04:57:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:02,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167944484] [2023-09-01 04:57:02,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167944484] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161495444] [2023-09-01 04:57:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:02,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:02,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:02,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:02,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 04:57:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:02,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:57:02,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:02,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161495444] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:02,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:02,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 04:57:02,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440418415] [2023-09-01 04:57:02,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:02,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:57:02,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:02,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:57:02,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:57:03,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:03,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 28 transitions, 209 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:03,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:03,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:03,154 INFO L130 PetriNetUnfolder]: 361/622 cut-off events. [2023-09-01 04:57:03,155 INFO L131 PetriNetUnfolder]: For 1617/1617 co-relation queries the response was YES. [2023-09-01 04:57:03,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 622 events. 361/622 cut-off events. For 1617/1617 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2480 event pairs, 41 based on Foata normal form. 90/712 useless extension candidates. Maximal degree in co-relation 2298. Up to 203 conditions per place. [2023-09-01 04:57:03,159 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 44 selfloop transitions, 22 changer transitions 9/75 dead transitions. [2023-09-01 04:57:03,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 621 flow [2023-09-01 04:57:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 04:57:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 04:57:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 630 transitions. [2023-09-01 04:57:03,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2023-09-01 04:57:03,161 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 630 transitions. [2023-09-01 04:57:03,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 630 transitions. [2023-09-01 04:57:03,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:03,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 630 transitions. [2023-09-01 04:57:03,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,167 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,167 INFO L175 Difference]: Start difference. First operand has 45 places, 28 transitions, 209 flow. Second operand 9 states and 630 transitions. [2023-09-01 04:57:03,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 621 flow [2023-09-01 04:57:03,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 04:57:03,172 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 474 flow [2023-09-01 04:57:03,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=474, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-09-01 04:57:03,173 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 34 predicate places. [2023-09-01 04:57:03,173 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 474 flow [2023-09-01 04:57:03,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:03,173 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:03,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:03,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:03,379 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:03,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1315827018, now seen corresponding path program 1 times [2023-09-01 04:57:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:03,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399144321] [2023-09-01 04:57:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:03,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:03,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:03,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399144321] [2023-09-01 04:57:03,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399144321] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:03,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407926941] [2023-09-01 04:57:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:03,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:03,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:03,438 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:03,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 04:57:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:03,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 04:57:03,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:03,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:03,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407926941] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:03,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:03,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-09-01 04:57:03,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933190720] [2023-09-01 04:57:03,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:03,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 04:57:03,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:03,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 04:57:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-09-01 04:57:03,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:03,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 474 flow. Second operand has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 12 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:03,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:03,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:03,835 INFO L130 PetriNetUnfolder]: 481/826 cut-off events. [2023-09-01 04:57:03,835 INFO L131 PetriNetUnfolder]: For 4923/4923 co-relation queries the response was YES. [2023-09-01 04:57:03,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 826 events. 481/826 cut-off events. For 4923/4923 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3313 event pairs, 33 based on Foata normal form. 86/912 useless extension candidates. Maximal degree in co-relation 3828. Up to 299 conditions per place. [2023-09-01 04:57:03,840 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 62 selfloop transitions, 37 changer transitions 18/117 dead transitions. [2023-09-01 04:57:03,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 1182 flow [2023-09-01 04:57:03,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:57:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:57:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 975 transitions. [2023-09-01 04:57:03,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47055984555984554 [2023-09-01 04:57:03,843 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 975 transitions. [2023-09-01 04:57:03,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 975 transitions. [2023-09-01 04:57:03,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:03,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 975 transitions. [2023-09-01 04:57:03,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 69.64285714285714) internal successors, (975), 14 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 148.0) internal successors, (2220), 15 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,850 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 148.0) internal successors, (2220), 15 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,850 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 474 flow. Second operand 14 states and 975 transitions. [2023-09-01 04:57:03,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 1182 flow [2023-09-01 04:57:03,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 1080 flow, removed 46 selfloop flow, removed 3 redundant places. [2023-09-01 04:57:03,863 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 745 flow [2023-09-01 04:57:03,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=745, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2023-09-01 04:57:03,863 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2023-09-01 04:57:03,863 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 745 flow [2023-09-01 04:57:03,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 12 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:03,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:03,864 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:03,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:04,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:04,070 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:04,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash -65917474, now seen corresponding path program 2 times [2023-09-01 04:57:04,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:04,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416080710] [2023-09-01 04:57:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:04,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:04,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:04,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416080710] [2023-09-01 04:57:04,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416080710] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:04,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836987825] [2023-09-01 04:57:04,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:57:04,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:04,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:04,171 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:04,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 04:57:04,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:57:04,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:57:04,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 04:57:04,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:04,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:04,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836987825] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:04,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:04,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-09-01 04:57:04,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749205946] [2023-09-01 04:57:04,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:04,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:57:04,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:04,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:57:04,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:57:04,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:04,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 745 flow. Second operand has 16 states, 16 states have (on average 64.625) internal successors, (1034), 16 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:04,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:04,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:04,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:04,764 INFO L130 PetriNetUnfolder]: 761/1306 cut-off events. [2023-09-01 04:57:04,765 INFO L131 PetriNetUnfolder]: For 10066/10066 co-relation queries the response was YES. [2023-09-01 04:57:04,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1306 events. 761/1306 cut-off events. For 10066/10066 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5609 event pairs, 57 based on Foata normal form. 68/1374 useless extension candidates. Maximal degree in co-relation 6416. Up to 499 conditions per place. [2023-09-01 04:57:04,773 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 74 selfloop transitions, 67 changer transitions 30/171 dead transitions. [2023-09-01 04:57:04,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 1967 flow [2023-09-01 04:57:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:57:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:57:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1315 transitions. [2023-09-01 04:57:04,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46763869132290187 [2023-09-01 04:57:04,778 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1315 transitions. [2023-09-01 04:57:04,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1315 transitions. [2023-09-01 04:57:04,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:04,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1315 transitions. [2023-09-01 04:57:04,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:04,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 148.0) internal successors, (2960), 20 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:04,786 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 148.0) internal successors, (2960), 20 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:04,786 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 745 flow. Second operand 19 states and 1315 transitions. [2023-09-01 04:57:04,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 1967 flow [2023-09-01 04:57:04,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1908 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-09-01 04:57:04,823 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 1417 flow [2023-09-01 04:57:04,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1417, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2023-09-01 04:57:04,823 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2023-09-01 04:57:04,824 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 1417 flow [2023-09-01 04:57:04,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 64.625) internal successors, (1034), 16 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:04,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:04,824 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:04,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:05,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 04:57:05,035 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:05,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:05,036 INFO L85 PathProgramCache]: Analyzing trace with hash 770837146, now seen corresponding path program 2 times [2023-09-01 04:57:05,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:05,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561807424] [2023-09-01 04:57:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:05,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:05,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:05,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561807424] [2023-09-01 04:57:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561807424] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:05,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081130775] [2023-09-01 04:57:05,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:57:05,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:05,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:05,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:05,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 04:57:05,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:57:05,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:57:05,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 04:57:05,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:05,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:05,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081130775] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:05,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:05,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-09-01 04:57:05,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790677850] [2023-09-01 04:57:05,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:05,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-09-01 04:57:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:05,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-09-01 04:57:05,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-09-01 04:57:05,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:05,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 1417 flow. Second operand has 28 states, 28 states have (on average 64.35714285714286) internal successors, (1802), 28 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:05,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:05,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:05,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:06,471 INFO L130 PetriNetUnfolder]: 1429/2466 cut-off events. [2023-09-01 04:57:06,471 INFO L131 PetriNetUnfolder]: For 31262/31262 co-relation queries the response was YES. [2023-09-01 04:57:06,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13157 conditions, 2466 events. 1429/2466 cut-off events. For 31262/31262 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11246 event pairs, 67 based on Foata normal form. 156/2622 useless extension candidates. Maximal degree in co-relation 13106. Up to 991 conditions per place. [2023-09-01 04:57:06,490 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 132 selfloop transitions, 131 changer transitions 58/321 dead transitions. [2023-09-01 04:57:06,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 321 transitions, 4021 flow [2023-09-01 04:57:06,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-09-01 04:57:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-09-01 04:57:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2356 transitions. [2023-09-01 04:57:06,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682034976152623 [2023-09-01 04:57:06,499 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2356 transitions. [2023-09-01 04:57:06,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2356 transitions. [2023-09-01 04:57:06,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:06,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2356 transitions. [2023-09-01 04:57:06,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 69.29411764705883) internal successors, (2356), 34 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:06,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 148.0) internal successors, (5180), 35 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:06,517 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 148.0) internal successors, (5180), 35 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:06,517 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 1417 flow. Second operand 34 states and 2356 transitions. [2023-09-01 04:57:06,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 321 transitions, 4021 flow [2023-09-01 04:57:06,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 321 transitions, 3946 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-09-01 04:57:06,676 INFO L231 Difference]: Finished difference. Result has 154 places, 189 transitions, 3061 flow [2023-09-01 04:57:06,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3061, PETRI_PLACES=154, PETRI_TRANSITIONS=189} [2023-09-01 04:57:06,677 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 129 predicate places. [2023-09-01 04:57:06,677 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 189 transitions, 3061 flow [2023-09-01 04:57:06,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 64.35714285714286) internal successors, (1802), 28 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:06,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:06,678 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:06,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:06,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 04:57:06,886 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:06,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:06,886 INFO L85 PathProgramCache]: Analyzing trace with hash -830391018, now seen corresponding path program 3 times [2023-09-01 04:57:06,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:06,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567930266] [2023-09-01 04:57:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:06,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:07,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:07,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567930266] [2023-09-01 04:57:07,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567930266] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:07,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208409865] [2023-09-01 04:57:07,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:57:07,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:07,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:07,291 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:07,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 04:57:07,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-09-01 04:57:07,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:57:07,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2023-09-01 04:57:07,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:07,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:07,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208409865] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:07,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:07,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-09-01 04:57:07,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574676050] [2023-09-01 04:57:07,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:08,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-09-01 04:57:08,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-09-01 04:57:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2023-09-01 04:57:08,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:08,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 189 transitions, 3061 flow. Second operand has 48 states, 48 states have (on average 64.20833333333333) internal successors, (3082), 48 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:08,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:08,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:08,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:10,630 INFO L130 PetriNetUnfolder]: 2885/5042 cut-off events. [2023-09-01 04:57:10,630 INFO L131 PetriNetUnfolder]: For 113189/113189 co-relation queries the response was YES. [2023-09-01 04:57:10,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28571 conditions, 5042 events. 2885/5042 cut-off events. For 113189/113189 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 24871 event pairs, 121 based on Foata normal form. 292/5334 useless extension candidates. Maximal degree in co-relation 28498. Up to 2111 conditions per place. [2023-09-01 04:57:10,680 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 206 selfloop transitions, 291 changer transitions 110/607 dead transitions. [2023-09-01 04:57:10,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 607 transitions, 8900 flow [2023-09-01 04:57:10,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-09-01 04:57:10,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-09-01 04:57:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 4083 transitions. [2023-09-01 04:57:10,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46759047182776 [2023-09-01 04:57:10,688 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 4083 transitions. [2023-09-01 04:57:10,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 4083 transitions. [2023-09-01 04:57:10,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:10,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 4083 transitions. [2023-09-01 04:57:10,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 69.20338983050847) internal successors, (4083), 59 states have internal predecessors, (4083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:10,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 148.0) internal successors, (8880), 60 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:10,738 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 148.0) internal successors, (8880), 60 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:10,738 INFO L175 Difference]: Start difference. First operand has 154 places, 189 transitions, 3061 flow. Second operand 59 states and 4083 transitions. [2023-09-01 04:57:10,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 607 transitions, 8900 flow [2023-09-01 04:57:11,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 607 transitions, 8808 flow, removed 32 selfloop flow, removed 7 redundant places. [2023-09-01 04:57:11,125 INFO L231 Difference]: Finished difference. Result has 240 places, 376 transitions, 7144 flow [2023-09-01 04:57:11,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=7144, PETRI_PLACES=240, PETRI_TRANSITIONS=376} [2023-09-01 04:57:11,126 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 215 predicate places. [2023-09-01 04:57:11,126 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 376 transitions, 7144 flow [2023-09-01 04:57:11,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 64.20833333333333) internal successors, (3082), 48 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:11,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:11,128 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:11,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-01 04:57:11,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:11,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:11,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1775272490, now seen corresponding path program 3 times [2023-09-01 04:57:11,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:11,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838500604] [2023-09-01 04:57:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:11,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:12,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:12,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838500604] [2023-09-01 04:57:12,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838500604] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:12,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142699921] [2023-09-01 04:57:12,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:57:12,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:12,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:12,594 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:12,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 04:57:12,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-09-01 04:57:12,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:57:12,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 04:57:12,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:57:13,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:57:13,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142699921] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:13,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:57:13,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [45] total 69 [2023-09-01 04:57:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723569956] [2023-09-01 04:57:13,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:13,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 04:57:13,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:13,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 04:57:13,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=850, Invalid=3842, Unknown=0, NotChecked=0, Total=4692 [2023-09-01 04:57:13,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:57:13,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 376 transitions, 7144 flow. Second operand has 24 states, 24 states have (on average 65.125) internal successors, (1563), 24 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:13,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:13,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:57:13,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:20,694 INFO L130 PetriNetUnfolder]: 22903/33946 cut-off events. [2023-09-01 04:57:20,695 INFO L131 PetriNetUnfolder]: For 243143/243143 co-relation queries the response was YES. [2023-09-01 04:57:21,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202247 conditions, 33946 events. 22903/33946 cut-off events. For 243143/243143 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 198393 event pairs, 473 based on Foata normal form. 950/34896 useless extension candidates. Maximal degree in co-relation 202149. Up to 19193 conditions per place. [2023-09-01 04:57:21,437 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 0 selfloop transitions, 0 changer transitions 3970/3970 dead transitions. [2023-09-01 04:57:21,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 3970 transitions, 77853 flow [2023-09-01 04:57:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 04:57:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 04:57:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1647 transitions. [2023-09-01 04:57:21,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48384253819036427 [2023-09-01 04:57:21,441 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1647 transitions. [2023-09-01 04:57:21,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1647 transitions. [2023-09-01 04:57:21,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:21,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1647 transitions. [2023-09-01 04:57:21,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 71.6086956521739) internal successors, (1647), 23 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:21,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 148.0) internal successors, (3552), 24 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:21,449 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 148.0) internal successors, (3552), 24 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:21,449 INFO L175 Difference]: Start difference. First operand has 240 places, 376 transitions, 7144 flow. Second operand 23 states and 1647 transitions. [2023-09-01 04:57:21,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 3970 transitions, 77853 flow [2023-09-01 04:57:25,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 3970 transitions, 64357 flow, removed 396 selfloop flow, removed 77 redundant places. [2023-09-01 04:57:25,727 INFO L231 Difference]: Finished difference. Result has 177 places, 0 transitions, 0 flow [2023-09-01 04:57:25,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=5077, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=177, PETRI_TRANSITIONS=0} [2023-09-01 04:57:25,728 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 152 predicate places. [2023-09-01 04:57:25,728 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 0 transitions, 0 flow [2023-09-01 04:57:25,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 65.125) internal successors, (1563), 24 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:57:25,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-09-01 04:57:25,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-09-01 04:57:25,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-09-01 04:57:25,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-09-01 04:57:25,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-09-01 04:57:25,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-09-01 04:57:25,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-09-01 04:57:25,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-09-01 04:57:25,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-09-01 04:57:25,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-09-01 04:57:25,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-09-01 04:57:25,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-09-01 04:57:25,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-09-01 04:57:25,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-09-01 04:57:25,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-09-01 04:57:25,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-09-01 04:57:25,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-09-01 04:57:25,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-09-01 04:57:25,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:25,939 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,SelfDestructingSolverStorable16 [2023-09-01 04:57:25,940 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:25,944 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 04:57:25,944 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 04:57:25,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 04:57:25 BasicIcfg [2023-09-01 04:57:25,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 04:57:25,947 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 04:57:25,947 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 04:57:25,947 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 04:57:25,948 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:56:57" (3/4) ... [2023-09-01 04:57:25,950 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 04:57:25,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-09-01 04:57:25,955 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-09-01 04:57:25,957 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 04:57:25,958 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 04:57:25,958 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 04:57:25,958 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 04:57:25,980 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 04:57:25,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 04:57:25,981 INFO L158 Benchmark]: Toolchain (without parser) took 29476.88ms. Allocated memory was 90.2MB in the beginning and 7.1GB in the end (delta: 7.0GB). Free memory was 66.9MB in the beginning and 6.2GB in the end (delta: -6.2GB). Peak memory consumption was 836.1MB. Max. memory is 16.1GB. [2023-09-01 04:57:25,981 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory is still 45.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:57:25,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.95ms. Allocated memory is still 90.2MB. Free memory was 66.6MB in the beginning and 47.6MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-09-01 04:57:25,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.65ms. Allocated memory is still 90.2MB. Free memory was 47.6MB in the beginning and 45.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:57:25,982 INFO L158 Benchmark]: Boogie Preprocessor took 53.74ms. Allocated memory is still 90.2MB. Free memory was 45.5MB in the beginning and 69.8MB in the end (delta: -24.3MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-09-01 04:57:25,982 INFO L158 Benchmark]: RCFGBuilder took 430.87ms. Allocated memory is still 90.2MB. Free memory was 69.8MB in the beginning and 55.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 04:57:25,982 INFO L158 Benchmark]: TraceAbstraction took 28391.41ms. Allocated memory was 90.2MB in the beginning and 7.1GB in the end (delta: 7.0GB). Free memory was 54.6MB in the beginning and 6.2GB in the end (delta: -6.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-09-01 04:57:25,982 INFO L158 Benchmark]: Witness Printer took 33.11ms. Allocated memory is still 7.1GB. Free memory was 6.2GB in the beginning and 6.2GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 04:57:25,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory is still 45.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 503.95ms. Allocated memory is still 90.2MB. Free memory was 66.6MB in the beginning and 47.6MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.65ms. Allocated memory is still 90.2MB. Free memory was 47.6MB in the beginning and 45.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.74ms. Allocated memory is still 90.2MB. Free memory was 45.5MB in the beginning and 69.8MB in the end (delta: -24.3MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * RCFGBuilder took 430.87ms. Allocated memory is still 90.2MB. Free memory was 69.8MB in the beginning and 55.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 28391.41ms. Allocated memory was 90.2MB in the beginning and 7.1GB in the end (delta: 7.0GB). Free memory was 54.6MB in the beginning and 6.2GB in the end (delta: -6.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 33.11ms. Allocated memory is still 7.1GB. Free memory was 6.2GB in the beginning and 6.2GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 77 PlacesBefore, 25 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1802 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 1843 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1524, independent: 1502, independent conditional: 0, independent unconditional: 1502, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 981, independent: 970, independent conditional: 0, independent unconditional: 970, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1524, independent: 532, independent conditional: 0, independent unconditional: 532, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 981, unknown conditional: 0, unknown unconditional: 981] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 28.3s, OverallIterations: 17, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2844 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2751 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2280 IncrementalHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 202 mSolverCounterUnsat, 30 mSDtfsCounter, 2280 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4808 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7144occurred in iteration=16, InterpolantAutomatonStates: 199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 395 ConstructedInterpolants, 0 QuantifiedInterpolants, 1149 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1572 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 30 InterpolantComputations, 12 PerfectInterpolantSequences, 486/1485 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 04:57:25,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE