./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:48:10,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:48:10,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:48:10,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:48:10,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:48:10,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:48:10,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:48:10,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:48:10,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:48:10,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:48:10,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:48:10,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:48:10,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:48:10,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:48:10,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:48:10,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:48:10,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:48:10,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:48:10,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:48:10,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:48:10,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:48:10,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:48:10,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:48:10,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:48:10,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:48:10,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:48:10,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:48:10,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:48:10,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:48:10,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:48:10,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:48:10,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:48:10,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:48:10,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:48:10,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:48:10,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:48:10,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:48:10,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:48:10,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:48:10,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:48:10,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:48:10,696 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:48:10,729 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:48:10,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:48:10,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:48:10,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:48:10,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:48:10,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:48:10,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:48:10,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:48:10,732 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:48:10,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:48:10,733 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:48:10,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:48:10,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:48:10,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:48:10,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:48:10,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:48:10,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:48:10,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:48:10,735 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:48:10,735 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:48:10,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:48:10,735 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:48:10,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:48:10,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:48:10,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:48:10,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:48:10,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:48:10,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:48:10,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:48:10,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:48:10,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:48:10,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:48:10,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:48:10,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:48:10,738 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:48:10,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:48:10,738 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:48:10,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:48:11,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:48:11,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:48:11,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:48:11,064 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:48:11,065 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:48:11,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-08-30 12:48:12,272 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:48:12,551 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:48:12,551 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-08-30 12:48:12,563 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/863fdc5b0/12465116f7cf46ce9df540f5e554e146/FLAG3a760de73 [2023-08-30 12:48:12,577 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/863fdc5b0/12465116f7cf46ce9df540f5e554e146 [2023-08-30 12:48:12,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:48:12,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:48:12,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:48:12,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:48:12,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:48:12,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:12,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0a5bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12, skipping insertion in model container [2023-08-30 12:48:12,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:12,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:48:12,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:48:12,848 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-1.i[30962,30975] [2023-08-30 12:48:12,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:48:12,859 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:48:12,922 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-1.i[30962,30975] [2023-08-30 12:48:12,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:48:12,950 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:48:12,950 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:48:12,955 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:48:12,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12 WrapperNode [2023-08-30 12:48:12,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:48:12,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:48:12,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:48:12,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:48:12,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:12,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:13,015 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-30 12:48:13,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:48:13,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:48:13,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:48:13,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:48:13,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:13,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:13,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:13,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:13,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:13,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:13,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:13,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:13,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:48:13,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:48:13,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:48:13,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:48:13,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (1/1) ... [2023-08-30 12:48:13,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:48:13,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:13,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 12:48:13,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 12:48:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 12:48:13,129 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 12:48:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 12:48:13,129 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 12:48:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:48:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:48:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:48:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:48:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:48:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:48:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:48:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:48:13,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:48:13,132 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:48:13,285 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:48:13,287 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:48:13,409 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:48:13,428 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:48:13,432 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:48:13,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:48:13 BoogieIcfgContainer [2023-08-30 12:48:13,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:48:13,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:48:13,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:48:13,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:48:13,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:48:12" (1/3) ... [2023-08-30 12:48:13,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141ce281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:48:13, skipping insertion in model container [2023-08-30 12:48:13,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:12" (2/3) ... [2023-08-30 12:48:13,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141ce281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:48:13, skipping insertion in model container [2023-08-30 12:48:13,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:48:13" (3/3) ... [2023-08-30 12:48:13,444 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2023-08-30 12:48:13,451 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:48:13,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:48:13,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:48:13,458 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:48:13,528 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:48:13,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 164 flow [2023-08-30 12:48:13,624 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2023-08-30 12:48:13,624 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:48:13,629 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. [2023-08-30 12:48:13,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 77 transitions, 164 flow [2023-08-30 12:48:13,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 75 transitions, 156 flow [2023-08-30 12:48:13,641 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:48:13,659 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 75 transitions, 156 flow [2023-08-30 12:48:13,666 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 75 transitions, 156 flow [2023-08-30 12:48:13,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 156 flow [2023-08-30 12:48:13,701 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2023-08-30 12:48:13,704 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:48:13,705 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. [2023-08-30 12:48:13,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 1802 [2023-08-30 12:48:15,741 INFO L134 LiptonReduction]: Checked pairs total: 1843 [2023-08-30 12:48:15,741 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-30 12:48:15,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:48:15,763 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;@1db7742b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:48:15,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:48:15,766 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-08-30 12:48:15,766 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:48:15,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:15,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:48:15,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:15,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash 9842129, now seen corresponding path program 1 times [2023-08-30 12:48:15,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:15,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932647726] [2023-08-30 12:48:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:15,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:15,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:15,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932647726] [2023-08-30 12:48:15,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932647726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:15,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:15,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:48:15,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184237858] [2023-08-30 12:48:15,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:15,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:48:15,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:15,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:48:15,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:48:16,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-08-30 12:48:16,012 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) [2023-08-30 12:48:16,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:16,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-08-30 12:48:16,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:16,114 INFO L130 PetriNetUnfolder]: 300/479 cut-off events. [2023-08-30 12:48:16,114 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 12:48:16,115 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. [2023-08-30 12:48:16,119 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-08-30 12:48:16,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 126 flow [2023-08-30 12:48:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:48:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:48:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-08-30 12:48:16,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2023-08-30 12:48:16,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-08-30 12:48:16,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-08-30 12:48:16,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:16,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-08-30 12:48:16,136 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) [2023-08-30 12:48:16,140 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) [2023-08-30 12:48:16,140 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) [2023-08-30 12:48:16,141 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 48 flow. Second operand 3 states and 232 transitions. [2023-08-30 12:48:16,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 126 flow [2023-08-30 12:48:16,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:48:16,145 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 70 flow [2023-08-30 12:48:16,146 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} [2023-08-30 12:48:16,149 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-08-30 12:48:16,149 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 70 flow [2023-08-30 12:48:16,150 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) [2023-08-30 12:48:16,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:16,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:48:16,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:48:16,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:16,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash 9842130, now seen corresponding path program 1 times [2023-08-30 12:48:16,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:16,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110006283] [2023-08-30 12:48:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:16,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:16,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:16,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110006283] [2023-08-30 12:48:16,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110006283] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:16,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:16,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:48:16,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370832407] [2023-08-30 12:48:16,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:16,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:48:16,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:16,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:48:16,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:48:16,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-08-30 12:48:16,211 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) [2023-08-30 12:48:16,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:16,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-08-30 12:48:16,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:16,292 INFO L130 PetriNetUnfolder]: 291/480 cut-off events. [2023-08-30 12:48:16,293 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 12:48:16,294 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. [2023-08-30 12:48:16,297 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-30 12:48:16,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 170 flow [2023-08-30 12:48:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:48:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:48:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-08-30 12:48:16,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-08-30 12:48:16,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-08-30 12:48:16,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-08-30 12:48:16,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:16,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-08-30 12:48:16,301 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) [2023-08-30 12:48:16,302 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) [2023-08-30 12:48:16,302 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) [2023-08-30 12:48:16,303 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 70 flow. Second operand 3 states and 225 transitions. [2023-08-30 12:48:16,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 170 flow [2023-08-30 12:48:16,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:48:16,304 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 100 flow [2023-08-30 12:48:16,305 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} [2023-08-30 12:48:16,305 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-08-30 12:48:16,306 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 100 flow [2023-08-30 12:48:16,306 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) [2023-08-30 12:48:16,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:16,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:48:16,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:48:16,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:16,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash 9842166, now seen corresponding path program 1 times [2023-08-30 12:48:16,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:16,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017209540] [2023-08-30 12:48:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:16,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:16,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:16,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017209540] [2023-08-30 12:48:16,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017209540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:16,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:16,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:48:16,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068528781] [2023-08-30 12:48:16,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:16,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:48:16,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:16,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:48:16,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:48:16,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-08-30 12:48:16,378 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) [2023-08-30 12:48:16,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:16,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-08-30 12:48:16,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:16,470 INFO L130 PetriNetUnfolder]: 416/697 cut-off events. [2023-08-30 12:48:16,470 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-30 12:48:16,473 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. [2023-08-30 12:48:16,478 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-30 12:48:16,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 269 flow [2023-08-30 12:48:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:48:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:48:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-08-30 12:48:16,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-08-30 12:48:16,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-08-30 12:48:16,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-08-30 12:48:16,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:16,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-08-30 12:48:16,483 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) [2023-08-30 12:48:16,484 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) [2023-08-30 12:48:16,484 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) [2023-08-30 12:48:16,484 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 100 flow. Second operand 3 states and 225 transitions. [2023-08-30 12:48:16,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 43 transitions, 269 flow [2023-08-30 12:48:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:48:16,487 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 108 flow [2023-08-30 12:48:16,487 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} [2023-08-30 12:48:16,488 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-30 12:48:16,491 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 108 flow [2023-08-30 12:48:16,491 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) [2023-08-30 12:48:16,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:16,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:48:16,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:48:16,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:16,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:16,493 INFO L85 PathProgramCache]: Analyzing trace with hash 305107525, now seen corresponding path program 1 times [2023-08-30 12:48:16,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:16,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792497846] [2023-08-30 12:48:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:16,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792497846] [2023-08-30 12:48:16,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792497846] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:48:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798854718] [2023-08-30 12:48:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:16,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:16,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:16,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:48:16,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 12:48:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:16,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:48:16,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:48:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:16,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:48:16,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798854718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:16,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:48:16,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:48:16,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579701373] [2023-08-30 12:48:16,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:16,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:48:16,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:48:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:48:16,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-08-30 12:48:16,790 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) [2023-08-30 12:48:16,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:16,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-08-30 12:48:16,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:16,906 INFO L130 PetriNetUnfolder]: 361/610 cut-off events. [2023-08-30 12:48:16,907 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2023-08-30 12:48:16,908 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. [2023-08-30 12:48:16,910 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-30 12:48:16,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 330 flow [2023-08-30 12:48:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:48:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:48:16,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-08-30 12:48:16,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016891891891891 [2023-08-30 12:48:16,912 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-08-30 12:48:16,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-08-30 12:48:16,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:16,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-08-30 12:48:16,913 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) [2023-08-30 12:48:16,915 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) [2023-08-30 12:48:16,915 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) [2023-08-30 12:48:16,915 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 108 flow. Second operand 4 states and 297 transitions. [2023-08-30 12:48:16,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 330 flow [2023-08-30 12:48:16,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:48:16,917 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 106 flow [2023-08-30 12:48:16,918 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} [2023-08-30 12:48:16,918 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-30 12:48:16,918 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 106 flow [2023-08-30 12:48:16,919 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) [2023-08-30 12:48:16,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:16,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:16,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 12:48:17,124 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 [2023-08-30 12:48:17,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:17,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1174384726, now seen corresponding path program 1 times [2023-08-30 12:48:17,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:17,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416759260] [2023-08-30 12:48:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:17,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:17,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:17,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416759260] [2023-08-30 12:48:17,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416759260] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:48:17,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779133547] [2023-08-30 12:48:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:17,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:17,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:17,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:48:17,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 12:48:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:17,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:48:17,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:48:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:17,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:48:17,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779133547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:17,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:48:17,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:48:17,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095433563] [2023-08-30 12:48:17,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:17,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:48:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:17,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:48:17,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:48:17,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-08-30 12:48:17,285 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) [2023-08-30 12:48:17,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:17,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-08-30 12:48:17,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:17,375 INFO L130 PetriNetUnfolder]: 301/514 cut-off events. [2023-08-30 12:48:17,375 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2023-08-30 12:48:17,376 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. [2023-08-30 12:48:17,378 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 32 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-08-30 12:48:17,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 206 flow [2023-08-30 12:48:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:48:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:48:17,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2023-08-30 12:48:17,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-30 12:48:17,381 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 288 transitions. [2023-08-30 12:48:17,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 288 transitions. [2023-08-30 12:48:17,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:17,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 288 transitions. [2023-08-30 12:48:17,382 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) [2023-08-30 12:48:17,384 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) [2023-08-30 12:48:17,384 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) [2023-08-30 12:48:17,387 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 106 flow. Second operand 4 states and 288 transitions. [2023-08-30 12:48:17,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 206 flow [2023-08-30 12:48:17,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:48:17,391 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 87 flow [2023-08-30 12:48:17,391 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} [2023-08-30 12:48:17,393 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-08-30 12:48:17,393 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 87 flow [2023-08-30 12:48:17,393 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) [2023-08-30 12:48:17,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:17,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:48:17,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:48:17,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:17,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:17,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 869167325, now seen corresponding path program 1 times [2023-08-30 12:48:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:17,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735321821] [2023-08-30 12:48:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:17,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:17,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:17,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735321821] [2023-08-30 12:48:17,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735321821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:17,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:17,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:48:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389229857] [2023-08-30 12:48:17,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:17,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:48:17,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:48:17,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:48:17,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-08-30 12:48:17,625 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) [2023-08-30 12:48:17,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:17,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-08-30 12:48:17,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:17,681 INFO L130 PetriNetUnfolder]: 259/454 cut-off events. [2023-08-30 12:48:17,682 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2023-08-30 12:48:17,682 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. [2023-08-30 12:48:17,684 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-30 12:48:17,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 223 flow [2023-08-30 12:48:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:48:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:48:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-08-30 12:48:17,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2023-08-30 12:48:17,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-08-30 12:48:17,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-08-30 12:48:17,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:17,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-08-30 12:48:17,687 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) [2023-08-30 12:48:17,688 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) [2023-08-30 12:48:17,688 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) [2023-08-30 12:48:17,688 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 87 flow. Second operand 3 states and 224 transitions. [2023-08-30 12:48:17,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 223 flow [2023-08-30 12:48:17,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:48:17,690 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 114 flow [2023-08-30 12:48:17,690 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} [2023-08-30 12:48:17,691 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-08-30 12:48:17,691 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 114 flow [2023-08-30 12:48:17,691 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) [2023-08-30 12:48:17,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:17,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:48:17,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:48:17,691 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:17,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:17,692 INFO L85 PathProgramCache]: Analyzing trace with hash 869167324, now seen corresponding path program 1 times [2023-08-30 12:48:17,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:17,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58287319] [2023-08-30 12:48:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:17,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:17,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58287319] [2023-08-30 12:48:17,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58287319] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:17,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:17,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:48:17,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740483240] [2023-08-30 12:48:17,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:17,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:48:17,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:17,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:48:17,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:48:17,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-08-30 12:48:17,723 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) [2023-08-30 12:48:17,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:17,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-08-30 12:48:17,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:17,773 INFO L130 PetriNetUnfolder]: 237/426 cut-off events. [2023-08-30 12:48:17,774 INFO L131 PetriNetUnfolder]: For 327/327 co-relation queries the response was YES. [2023-08-30 12:48:17,775 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. [2023-08-30 12:48:17,776 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-30 12:48:17,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 245 flow [2023-08-30 12:48:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:48:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:48:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-08-30 12:48:17,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022522522522522 [2023-08-30 12:48:17,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-08-30 12:48:17,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-08-30 12:48:17,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:17,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-08-30 12:48:17,779 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) [2023-08-30 12:48:17,780 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) [2023-08-30 12:48:17,780 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) [2023-08-30 12:48:17,780 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 114 flow. Second operand 3 states and 223 transitions. [2023-08-30 12:48:17,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 245 flow [2023-08-30 12:48:17,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:48:17,782 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 122 flow [2023-08-30 12:48:17,782 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} [2023-08-30 12:48:17,783 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-08-30 12:48:17,783 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 122 flow [2023-08-30 12:48:17,783 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) [2023-08-30 12:48:17,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:17,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:17,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:48:17,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:17,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:17,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877637, now seen corresponding path program 1 times [2023-08-30 12:48:17,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:17,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147221583] [2023-08-30 12:48:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:17,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:17,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:17,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147221583] [2023-08-30 12:48:17,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147221583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:17,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:17,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:48:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632142271] [2023-08-30 12:48:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:17,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:48:17,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:48:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:48:17,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:48:17,834 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) [2023-08-30 12:48:17,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:17,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:48:17,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:17,917 INFO L130 PetriNetUnfolder]: 289/502 cut-off events. [2023-08-30 12:48:17,917 INFO L131 PetriNetUnfolder]: For 538/538 co-relation queries the response was YES. [2023-08-30 12:48:17,918 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. [2023-08-30 12:48:17,920 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 36 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-08-30 12:48:17,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 331 flow [2023-08-30 12:48:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:48:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:48:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 356 transitions. [2023-08-30 12:48:17,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2023-08-30 12:48:17,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 356 transitions. [2023-08-30 12:48:17,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 356 transitions. [2023-08-30 12:48:17,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:17,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 356 transitions. [2023-08-30 12:48:17,924 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) [2023-08-30 12:48:17,925 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) [2023-08-30 12:48:17,925 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) [2023-08-30 12:48:17,925 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 122 flow. Second operand 5 states and 356 transitions. [2023-08-30 12:48:17,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 331 flow [2023-08-30 12:48:17,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:48:17,927 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 219 flow [2023-08-30 12:48:17,928 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} [2023-08-30 12:48:17,928 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2023-08-30 12:48:17,928 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 219 flow [2023-08-30 12:48:17,929 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) [2023-08-30 12:48:17,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:17,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:17,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:48:17,929 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:17,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2077921346, now seen corresponding path program 1 times [2023-08-30 12:48:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:17,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129717574] [2023-08-30 12:48:17,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:17,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:17,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:17,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129717574] [2023-08-30 12:48:17,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129717574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:17,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:17,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:48:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065612517] [2023-08-30 12:48:17,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:17,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:48:17,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:17,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:48:17,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:48:17,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:48:17,969 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) [2023-08-30 12:48:17,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:17,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:48:17,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:18,065 INFO L130 PetriNetUnfolder]: 301/532 cut-off events. [2023-08-30 12:48:18,066 INFO L131 PetriNetUnfolder]: For 1145/1145 co-relation queries the response was YES. [2023-08-30 12:48:18,067 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. [2023-08-30 12:48:18,069 INFO L137 encePairwiseOnDemand]: 141/148 looper letters, 43 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-08-30 12:48:18,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 438 flow [2023-08-30 12:48:18,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:48:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:48:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2023-08-30 12:48:18,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2023-08-30 12:48:18,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2023-08-30 12:48:18,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2023-08-30 12:48:18,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:18,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2023-08-30 12:48:18,073 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) [2023-08-30 12:48:18,074 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) [2023-08-30 12:48:18,074 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) [2023-08-30 12:48:18,075 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 219 flow. Second operand 5 states and 358 transitions. [2023-08-30 12:48:18,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 438 flow [2023-08-30 12:48:18,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 411 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 12:48:18,078 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 281 flow [2023-08-30 12:48:18,078 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} [2023-08-30 12:48:18,079 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-08-30 12:48:18,079 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 281 flow [2023-08-30 12:48:18,079 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) [2023-08-30 12:48:18,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:18,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:18,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:48:18,080 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:18,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:18,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877425, now seen corresponding path program 1 times [2023-08-30 12:48:18,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:18,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417539039] [2023-08-30 12:48:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:18,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:18,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:18,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417539039] [2023-08-30 12:48:18,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417539039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:18,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:18,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:48:18,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474162791] [2023-08-30 12:48:18,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:18,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:48:18,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:18,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:48:18,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:48:18,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:48:18,123 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) [2023-08-30 12:48:18,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:18,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:48:18,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:18,220 INFO L130 PetriNetUnfolder]: 353/608 cut-off events. [2023-08-30 12:48:18,220 INFO L131 PetriNetUnfolder]: For 1644/1644 co-relation queries the response was YES. [2023-08-30 12:48:18,222 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. [2023-08-30 12:48:18,225 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 46 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2023-08-30 12:48:18,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 536 flow [2023-08-30 12:48:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:48:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:48:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 360 transitions. [2023-08-30 12:48:18,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-30 12:48:18,227 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 360 transitions. [2023-08-30 12:48:18,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 360 transitions. [2023-08-30 12:48:18,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:18,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 360 transitions. [2023-08-30 12:48:18,228 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) [2023-08-30 12:48:18,229 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) [2023-08-30 12:48:18,230 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) [2023-08-30 12:48:18,230 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 281 flow. Second operand 5 states and 360 transitions. [2023-08-30 12:48:18,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 536 flow [2023-08-30 12:48:18,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 532 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 12:48:18,235 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 387 flow [2023-08-30 12:48:18,235 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} [2023-08-30 12:48:18,236 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2023-08-30 12:48:18,237 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 387 flow [2023-08-30 12:48:18,237 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) [2023-08-30 12:48:18,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:18,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:18,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:48:18,238 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:18,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877424, now seen corresponding path program 1 times [2023-08-30 12:48:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:18,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899362904] [2023-08-30 12:48:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:18,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:18,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899362904] [2023-08-30 12:48:18,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899362904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:18,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:18,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:48:18,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240982992] [2023-08-30 12:48:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:18,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:48:18,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:48:18,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:48:18,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:48:18,289 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) [2023-08-30 12:48:18,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:18,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:48:18,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:18,351 INFO L130 PetriNetUnfolder]: 252/432 cut-off events. [2023-08-30 12:48:18,351 INFO L131 PetriNetUnfolder]: For 1945/1945 co-relation queries the response was YES. [2023-08-30 12:48:18,352 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. [2023-08-30 12:48:18,354 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 12:48:18,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 28 transitions, 310 flow [2023-08-30 12:48:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:48:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:48:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-08-30 12:48:18,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2023-08-30 12:48:18,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-08-30 12:48:18,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-08-30 12:48:18,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:18,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-08-30 12:48:18,358 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) [2023-08-30 12:48:18,358 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) [2023-08-30 12:48:18,359 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) [2023-08-30 12:48:18,359 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 387 flow. Second operand 3 states and 205 transitions. [2023-08-30 12:48:18,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 28 transitions, 310 flow [2023-08-30 12:48:18,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 263 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-08-30 12:48:18,365 INFO L231 Difference]: Finished difference. Result has 45 places, 28 transitions, 209 flow [2023-08-30 12:48:18,365 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} [2023-08-30 12:48:18,365 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-08-30 12:48:18,366 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 28 transitions, 209 flow [2023-08-30 12:48:18,366 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) [2023-08-30 12:48:18,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:18,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:18,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:48:18,367 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:18,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash -8946286, now seen corresponding path program 1 times [2023-08-30 12:48:18,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:18,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903391121] [2023-08-30 12:48:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:18,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:18,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903391121] [2023-08-30 12:48:18,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903391121] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:48:18,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655456862] [2023-08-30 12:48:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:18,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:18,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:18,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:48:18,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 12:48:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:18,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:48:18,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:48:18,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:18,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:48:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:18,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655456862] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:48:18,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:48:18,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 12:48:18,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480884519] [2023-08-30 12:48:18,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:48:18,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 12:48:18,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:18,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 12:48:18,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:48:18,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:48:18,576 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) [2023-08-30 12:48:18,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:18,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:48:18,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:18,704 INFO L130 PetriNetUnfolder]: 361/622 cut-off events. [2023-08-30 12:48:18,704 INFO L131 PetriNetUnfolder]: For 1617/1617 co-relation queries the response was YES. [2023-08-30 12:48:18,706 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. [2023-08-30 12:48:18,708 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 44 selfloop transitions, 22 changer transitions 9/75 dead transitions. [2023-08-30 12:48:18,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 621 flow [2023-08-30 12:48:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 12:48:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 12:48:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 630 transitions. [2023-08-30 12:48:18,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2023-08-30 12:48:18,710 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 630 transitions. [2023-08-30 12:48:18,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 630 transitions. [2023-08-30 12:48:18,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:18,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 630 transitions. [2023-08-30 12:48:18,712 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) [2023-08-30 12:48:18,714 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) [2023-08-30 12:48:18,714 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) [2023-08-30 12:48:18,715 INFO L175 Difference]: Start difference. First operand has 45 places, 28 transitions, 209 flow. Second operand 9 states and 630 transitions. [2023-08-30 12:48:18,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 621 flow [2023-08-30 12:48:18,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 12:48:18,719 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 474 flow [2023-08-30 12:48:18,719 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} [2023-08-30 12:48:18,719 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 34 predicate places. [2023-08-30 12:48:18,719 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 474 flow [2023-08-30 12:48:18,720 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) [2023-08-30 12:48:18,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:18,720 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:18,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:48:18,925 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 [2023-08-30 12:48:18,926 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:18,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1315827018, now seen corresponding path program 1 times [2023-08-30 12:48:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247270743] [2023-08-30 12:48:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:18,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:18,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247270743] [2023-08-30 12:48:18,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247270743] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:48:18,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372296654] [2023-08-30 12:48:18,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:18,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:18,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:18,994 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:48:19,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 12:48:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:19,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:48:19,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:48:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:19,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:48:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:19,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372296654] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:48:19,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:48:19,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 12:48:19,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199332464] [2023-08-30 12:48:19,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:48:19,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:48:19,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:48:19,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:48:19,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:48:19,191 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) [2023-08-30 12:48:19,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:19,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:48:19,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:19,425 INFO L130 PetriNetUnfolder]: 481/826 cut-off events. [2023-08-30 12:48:19,425 INFO L131 PetriNetUnfolder]: For 4923/4923 co-relation queries the response was YES. [2023-08-30 12:48:19,427 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. [2023-08-30 12:48:19,430 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 62 selfloop transitions, 37 changer transitions 18/117 dead transitions. [2023-08-30 12:48:19,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 1182 flow [2023-08-30 12:48:19,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:48:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:48:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 975 transitions. [2023-08-30 12:48:19,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47055984555984554 [2023-08-30 12:48:19,433 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 975 transitions. [2023-08-30 12:48:19,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 975 transitions. [2023-08-30 12:48:19,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:19,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 975 transitions. [2023-08-30 12:48:19,436 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) [2023-08-30 12:48:19,449 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) [2023-08-30 12:48:19,450 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) [2023-08-30 12:48:19,450 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 474 flow. Second operand 14 states and 975 transitions. [2023-08-30 12:48:19,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 1182 flow [2023-08-30 12:48:19,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 1080 flow, removed 46 selfloop flow, removed 3 redundant places. [2023-08-30 12:48:19,460 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 745 flow [2023-08-30 12:48:19,461 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} [2023-08-30 12:48:19,461 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2023-08-30 12:48:19,461 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 745 flow [2023-08-30 12:48:19,462 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) [2023-08-30 12:48:19,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:19,462 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:19,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 12:48:19,667 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 [2023-08-30 12:48:19,667 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:19,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash -65917474, now seen corresponding path program 2 times [2023-08-30 12:48:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:19,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437282837] [2023-08-30 12:48:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:19,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:19,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:19,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437282837] [2023-08-30 12:48:19,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437282837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:48:19,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638285334] [2023-08-30 12:48:19,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:48:19,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:19,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:19,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:48:19,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 12:48:19,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:48:19,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:48:19,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:48:19,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:48:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:19,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:48:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:19,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638285334] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:48:19,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:48:19,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 12:48:19,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011429892] [2023-08-30 12:48:19,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:48:19,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:48:19,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:19,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:48:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:48:19,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:48:19,983 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) [2023-08-30 12:48:19,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:19,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:48:19,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:20,362 INFO L130 PetriNetUnfolder]: 761/1306 cut-off events. [2023-08-30 12:48:20,362 INFO L131 PetriNetUnfolder]: For 10066/10066 co-relation queries the response was YES. [2023-08-30 12:48:20,366 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. [2023-08-30 12:48:20,370 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 74 selfloop transitions, 67 changer transitions 30/171 dead transitions. [2023-08-30 12:48:20,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 1967 flow [2023-08-30 12:48:20,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:48:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:48:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1315 transitions. [2023-08-30 12:48:20,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46763869132290187 [2023-08-30 12:48:20,374 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1315 transitions. [2023-08-30 12:48:20,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1315 transitions. [2023-08-30 12:48:20,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:20,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1315 transitions. [2023-08-30 12:48:20,378 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) [2023-08-30 12:48:20,382 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) [2023-08-30 12:48:20,382 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) [2023-08-30 12:48:20,382 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 745 flow. Second operand 19 states and 1315 transitions. [2023-08-30 12:48:20,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 1967 flow [2023-08-30 12:48:20,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1908 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-08-30 12:48:20,434 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 1417 flow [2023-08-30 12:48:20,434 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} [2023-08-30 12:48:20,435 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2023-08-30 12:48:20,435 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 1417 flow [2023-08-30 12:48:20,436 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) [2023-08-30 12:48:20,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:20,436 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:20,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 12:48:20,641 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 [2023-08-30 12:48:20,641 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:20,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash 770837146, now seen corresponding path program 2 times [2023-08-30 12:48:20,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:20,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000913148] [2023-08-30 12:48:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:20,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:20,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000913148] [2023-08-30 12:48:20,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000913148] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:48:20,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327170552] [2023-08-30 12:48:20,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:48:20,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:20,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:20,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:48:20,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 12:48:20,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:48:20,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:48:20,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 12:48:20,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:48:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:20,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:48:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:21,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327170552] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:48:21,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:48:21,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-08-30 12:48:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397258921] [2023-08-30 12:48:21,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:48:21,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 12:48:21,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 12:48:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-08-30 12:48:21,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:48:21,230 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) [2023-08-30 12:48:21,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:21,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:48:21,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:22,171 INFO L130 PetriNetUnfolder]: 1429/2466 cut-off events. [2023-08-30 12:48:22,171 INFO L131 PetriNetUnfolder]: For 31262/31262 co-relation queries the response was YES. [2023-08-30 12:48:22,181 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. [2023-08-30 12:48:22,190 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 132 selfloop transitions, 131 changer transitions 58/321 dead transitions. [2023-08-30 12:48:22,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 321 transitions, 4021 flow [2023-08-30 12:48:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-30 12:48:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-30 12:48:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2356 transitions. [2023-08-30 12:48:22,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682034976152623 [2023-08-30 12:48:22,196 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2356 transitions. [2023-08-30 12:48:22,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2356 transitions. [2023-08-30 12:48:22,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:22,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2356 transitions. [2023-08-30 12:48:22,203 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) [2023-08-30 12:48:22,209 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) [2023-08-30 12:48:22,210 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) [2023-08-30 12:48:22,210 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 1417 flow. Second operand 34 states and 2356 transitions. [2023-08-30 12:48:22,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 321 transitions, 4021 flow [2023-08-30 12:48:22,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 321 transitions, 3946 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-08-30 12:48:22,289 INFO L231 Difference]: Finished difference. Result has 154 places, 189 transitions, 3061 flow [2023-08-30 12:48:22,290 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} [2023-08-30 12:48:22,290 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 129 predicate places. [2023-08-30 12:48:22,290 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 189 transitions, 3061 flow [2023-08-30 12:48:22,291 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) [2023-08-30 12:48:22,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:22,292 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:22,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 12:48:22,502 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 [2023-08-30 12:48:22,503 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:22,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash -830391018, now seen corresponding path program 3 times [2023-08-30 12:48:22,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:22,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032290884] [2023-08-30 12:48:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:22,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:22,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:22,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032290884] [2023-08-30 12:48:22,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032290884] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:48:22,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269566888] [2023-08-30 12:48:22,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:48:22,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:22,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:22,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:48:22,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 12:48:23,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-08-30 12:48:23,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:48:23,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 12:48:23,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:48:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:23,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:48:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269566888] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:48:23,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:48:23,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-08-30 12:48:23,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193577779] [2023-08-30 12:48:23,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:48:23,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-30 12:48:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:23,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-30 12:48:23,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2023-08-30 12:48:23,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:48:23,682 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) [2023-08-30 12:48:23,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:23,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:48:23,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:26,168 INFO L130 PetriNetUnfolder]: 2885/5042 cut-off events. [2023-08-30 12:48:26,168 INFO L131 PetriNetUnfolder]: For 113189/113189 co-relation queries the response was YES. [2023-08-30 12:48:26,190 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. [2023-08-30 12:48:26,205 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 206 selfloop transitions, 291 changer transitions 110/607 dead transitions. [2023-08-30 12:48:26,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 607 transitions, 8900 flow [2023-08-30 12:48:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-08-30 12:48:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-08-30 12:48:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 4083 transitions. [2023-08-30 12:48:26,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46759047182776 [2023-08-30 12:48:26,212 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 4083 transitions. [2023-08-30 12:48:26,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 4083 transitions. [2023-08-30 12:48:26,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:26,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 4083 transitions. [2023-08-30 12:48:26,221 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) [2023-08-30 12:48:26,232 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) [2023-08-30 12:48:26,234 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) [2023-08-30 12:48:26,234 INFO L175 Difference]: Start difference. First operand has 154 places, 189 transitions, 3061 flow. Second operand 59 states and 4083 transitions. [2023-08-30 12:48:26,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 607 transitions, 8900 flow [2023-08-30 12:48:26,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 607 transitions, 8808 flow, removed 32 selfloop flow, removed 7 redundant places. [2023-08-30 12:48:26,551 INFO L231 Difference]: Finished difference. Result has 240 places, 376 transitions, 7144 flow [2023-08-30 12:48:26,551 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} [2023-08-30 12:48:26,551 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 215 predicate places. [2023-08-30 12:48:26,552 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 376 transitions, 7144 flow [2023-08-30 12:48:26,553 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) [2023-08-30 12:48:26,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:26,553 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:26,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 12:48:26,758 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 [2023-08-30 12:48:26,758 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:26,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1775272490, now seen corresponding path program 3 times [2023-08-30 12:48:26,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:26,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584443863] [2023-08-30 12:48:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:27,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:27,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584443863] [2023-08-30 12:48:27,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584443863] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:48:27,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668193380] [2023-08-30 12:48:27,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:48:27,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:27,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:28,000 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:48:28,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 12:48:28,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-08-30 12:48:28,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:48:28,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 12:48:28,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:48:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:28,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:48:28,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668193380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:28,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:48:28,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [45] total 69 [2023-08-30 12:48:28,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811773819] [2023-08-30 12:48:28,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:28,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 12:48:28,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:28,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 12:48:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=850, Invalid=3842, Unknown=0, NotChecked=0, Total=4692 [2023-08-30 12:48:28,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:48:28,771 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) [2023-08-30 12:48:28,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:28,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:48:28,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:35,307 INFO L130 PetriNetUnfolder]: 22903/33946 cut-off events. [2023-08-30 12:48:35,307 INFO L131 PetriNetUnfolder]: For 243143/243143 co-relation queries the response was YES. [2023-08-30 12:48:35,651 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. [2023-08-30 12:48:35,698 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 0 selfloop transitions, 0 changer transitions 3970/3970 dead transitions. [2023-08-30 12:48:35,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 3970 transitions, 77853 flow [2023-08-30 12:48:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 12:48:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 12:48:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1647 transitions. [2023-08-30 12:48:35,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48384253819036427 [2023-08-30 12:48:35,703 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1647 transitions. [2023-08-30 12:48:35,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1647 transitions. [2023-08-30 12:48:35,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:35,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1647 transitions. [2023-08-30 12:48:35,709 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) [2023-08-30 12:48:35,714 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) [2023-08-30 12:48:35,715 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) [2023-08-30 12:48:35,715 INFO L175 Difference]: Start difference. First operand has 240 places, 376 transitions, 7144 flow. Second operand 23 states and 1647 transitions. [2023-08-30 12:48:35,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 3970 transitions, 77853 flow [2023-08-30 12:48:39,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 3970 transitions, 64357 flow, removed 396 selfloop flow, removed 77 redundant places. [2023-08-30 12:48:39,206 INFO L231 Difference]: Finished difference. Result has 177 places, 0 transitions, 0 flow [2023-08-30 12:48:39,206 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} [2023-08-30 12:48:39,207 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 152 predicate places. [2023-08-30 12:48:39,207 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 0 transitions, 0 flow [2023-08-30 12:48:39,208 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) [2023-08-30 12:48:39,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-30 12:48:39,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-08-30 12:48:39,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 12:48:39,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 12:48:39,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 12:48:39,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 12:48:39,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 12:48:39,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 12:48:39,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 12:48:39,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 12:48:39,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 12:48:39,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 12:48:39,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 12:48:39,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 12:48:39,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 12:48:39,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 12:48:39,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 12:48:39,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 12:48:39,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 12:48:39,422 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 [2023-08-30 12:48:39,422 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:39,426 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:48:39,426 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:48:39,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:48:39 BasicIcfg [2023-08-30 12:48:39,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:48:39,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:48:39,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:48:39,429 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:48:39,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:48:13" (3/4) ... [2023-08-30 12:48:39,431 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:48:39,436 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-08-30 12:48:39,436 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-08-30 12:48:39,438 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 12:48:39,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 12:48:39,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:48:39,439 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:48:39,466 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:48:39,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:48:39,467 INFO L158 Benchmark]: Toolchain (without parser) took 26887.04ms. Allocated memory was 75.5MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 52.0MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 882.1MB. Max. memory is 16.1GB. [2023-08-30 12:48:39,468 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 75.5MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:48:39,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.65ms. Allocated memory is still 75.5MB. Free memory was 51.7MB in the beginning and 32.5MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 12:48:39,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.40ms. Allocated memory was 75.5MB in the beginning and 100.7MB in the end (delta: 25.2MB). Free memory was 32.5MB in the beginning and 80.6MB in the end (delta: -48.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2023-08-30 12:48:39,469 INFO L158 Benchmark]: Boogie Preprocessor took 44.10ms. Allocated memory is still 100.7MB. Free memory was 80.6MB in the beginning and 79.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:48:39,469 INFO L158 Benchmark]: RCFGBuilder took 374.05ms. Allocated memory is still 100.7MB. Free memory was 79.4MB in the beginning and 64.8MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 12:48:39,469 INFO L158 Benchmark]: TraceAbstraction took 25990.25ms. Allocated memory was 100.7MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 64.4MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-08-30 12:48:39,470 INFO L158 Benchmark]: Witness Printer took 38.03ms. Allocated memory is still 4.2GB. Free memory was 3.3GB in the beginning and 3.3GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:48:39,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 75.5MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.65ms. Allocated memory is still 75.5MB. Free memory was 51.7MB in the beginning and 32.5MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.40ms. Allocated memory was 75.5MB in the beginning and 100.7MB in the end (delta: 25.2MB). Free memory was 32.5MB in the beginning and 80.6MB in the end (delta: -48.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.10ms. Allocated memory is still 100.7MB. Free memory was 80.6MB in the beginning and 79.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 374.05ms. Allocated memory is still 100.7MB. Free memory was 79.4MB in the beginning and 64.8MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 25990.25ms. Allocated memory was 100.7MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 64.4MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 38.03ms. Allocated memory is still 4.2GB. Free memory was 3.3GB in the beginning and 3.3GB in the end (delta: 3.1MB). 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: 2.1s, 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: 25.9s, OverallIterations: 17, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2844 SdHoareTripleChecker+Valid, 1.6s 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, 3.7s 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, 4.1s 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! [2023-08-30 12:48:39,506 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