./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:41:03,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:41:03,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:41:03,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:41:03,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:41:03,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:41:03,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:41:03,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:41:03,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:41:03,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:41:03,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:41:03,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:41:03,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:41:03,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:41:03,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:41:03,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:41:03,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:41:03,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:41:03,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:41:03,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:41:03,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:41:03,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:41:03,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:41:03,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:41:03,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:41:03,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:41:03,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:41:03,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:41:03,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:41:03,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:41:03,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:41:03,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:41:03,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:41:03,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:41:03,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:41:03,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:41:03,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:41:03,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:41:03,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:41:03,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:41:03,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:41:03,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:41:03,807 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:41:03,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:41:03,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:41:03,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:41:03,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:41:03,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:41:03,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:41:03,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:41:03,812 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:41:03,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:41:03,813 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:41:03,813 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:41:03,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:41:03,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:41:03,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:41:03,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:41:03,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:41:03,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:41:03,814 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:41:03,815 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:41:03,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:41:03,815 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:41:03,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:41:03,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:41:03,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:41:03,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:41:03,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:41:03,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:41:03,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:41:03,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:41:03,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:41:03,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:41:03,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:41:03,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:41:03,818 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:41:03,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:41:03,818 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:41:03,818 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:41:04,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:41:04,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:41:04,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:41:04,143 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:41:04,143 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:41:04,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2023-09-01 08:41:05,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:41:05,531 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:41:05,532 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2023-09-01 08:41:05,545 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d017b4ac3/2451e02f58214464b2fff6ddfaba8512/FLAG8122e2388 [2023-09-01 08:41:05,557 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d017b4ac3/2451e02f58214464b2fff6ddfaba8512 [2023-09-01 08:41:05,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:41:05,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:41:05,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:41:05,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:41:05,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:41:05,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:41:05" (1/1) ... [2023-09-01 08:41:05,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2ba01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:05, skipping insertion in model container [2023-09-01 08:41:05,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:41:05" (1/1) ... [2023-09-01 08:41:05,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:41:05,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:41:05,854 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-deagle/circular_buffer_bad.i[30440,30453] [2023-09-01 08:41:05,868 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-deagle/circular_buffer_bad.i[30895,30908] [2023-09-01 08:41:05,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:41:05,897 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:41:05,956 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-deagle/circular_buffer_bad.i[30440,30453] [2023-09-01 08:41:05,960 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-deagle/circular_buffer_bad.i[30895,30908] [2023-09-01 08:41:05,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:41:06,002 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:41:06,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06 WrapperNode [2023-09-01 08:41:06,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:41:06,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:41:06,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:41:06,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:41:06,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,074 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2023-09-01 08:41:06,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:41:06,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:41:06,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:41:06,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:41:06,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:41:06,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:41:06,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:41:06,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:41:06,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (1/1) ... [2023-09-01 08:41:06,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:41:06,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:41:06,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:41:06,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:41:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:41:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 08:41:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 08:41:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 08:41:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 08:41:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:41:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 08:41:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:41:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:41:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:41:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-09-01 08:41:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:41:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:41:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:41:06,224 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:41:06,392 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:41:06,393 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:41:06,685 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:41:06,692 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:41:06,693 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 08:41:06,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:41:06 BoogieIcfgContainer [2023-09-01 08:41:06,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:41:06,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:41:06,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:41:06,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:41:06,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:41:05" (1/3) ... [2023-09-01 08:41:06,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5599796e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:41:06, skipping insertion in model container [2023-09-01 08:41:06,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:41:06" (2/3) ... [2023-09-01 08:41:06,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5599796e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:41:06, skipping insertion in model container [2023-09-01 08:41:06,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:41:06" (3/3) ... [2023-09-01 08:41:06,705 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2023-09-01 08:41:06,712 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:41:06,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:41:06,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 08:41:06,721 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:41:06,808 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:41:06,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 146 transitions, 308 flow [2023-09-01 08:41:06,914 INFO L130 PetriNetUnfolder]: 10/144 cut-off events. [2023-09-01 08:41:06,914 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:41:06,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 144 events. 10/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 279 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-09-01 08:41:06,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 146 transitions, 308 flow [2023-09-01 08:41:06,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 135 transitions, 279 flow [2023-09-01 08:41:06,930 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:41:06,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 135 transitions, 279 flow [2023-09-01 08:41:06,940 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 135 transitions, 279 flow [2023-09-01 08:41:06,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 279 flow [2023-09-01 08:41:06,980 INFO L130 PetriNetUnfolder]: 10/135 cut-off events. [2023-09-01 08:41:06,981 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:41:06,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 135 events. 10/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 269 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-09-01 08:41:06,985 INFO L119 LiptonReduction]: Number of co-enabled transitions 4392 [2023-09-01 08:41:11,483 INFO L134 LiptonReduction]: Checked pairs total: 8985 [2023-09-01 08:41:11,484 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-09-01 08:41:11,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:41:11,502 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;@53b96a09, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:41:11,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-09-01 08:41:11,508 INFO L130 PetriNetUnfolder]: 2/19 cut-off events. [2023-09-01 08:41:11,508 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:41:11,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:41:11,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:41:11,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-09-01 08:41:11,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:41:11,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1174874696, now seen corresponding path program 1 times [2023-09-01 08:41:11,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:41:11,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680027923] [2023-09-01 08:41:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:11,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:41:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:41:11,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:41:11,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680027923] [2023-09-01 08:41:11,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680027923] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:41:11,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:41:11,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:41:11,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339612729] [2023-09-01 08:41:11,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:41:11,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:41:11,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:41:11,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:41:11,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:41:11,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 262 [2023-09-01 08:41:11,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:11,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:41:11,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 262 [2023-09-01 08:41:11,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:12,150 INFO L130 PetriNetUnfolder]: 879/1432 cut-off events. [2023-09-01 08:41:12,151 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-09-01 08:41:12,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 1432 events. 879/1432 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7088 event pairs, 393 based on Foata normal form. 0/1050 useless extension candidates. Maximal degree in co-relation 2692. Up to 805 conditions per place. [2023-09-01 08:41:12,161 INFO L137 encePairwiseOnDemand]: 257/262 looper letters, 54 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-09-01 08:41:12,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 60 transitions, 244 flow [2023-09-01 08:41:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:41:12,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:41:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-09-01 08:41:12,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788804071246819 [2023-09-01 08:41:12,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-09-01 08:41:12,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-09-01 08:41:12,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:12,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-09-01 08:41:12,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,190 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 81 flow. Second operand 3 states and 455 transitions. [2023-09-01 08:41:12,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 60 transitions, 244 flow [2023-09-01 08:41:12,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 60 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:41:12,194 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 92 flow [2023-09-01 08:41:12,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-09-01 08:41:12,198 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-09-01 08:41:12,199 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 92 flow [2023-09-01 08:41:12,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:41:12,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:41:12,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:41:12,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-09-01 08:41:12,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:41:12,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1837511206, now seen corresponding path program 1 times [2023-09-01 08:41:12,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:41:12,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817158827] [2023-09-01 08:41:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:12,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:41:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:41:12,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:41:12,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817158827] [2023-09-01 08:41:12,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817158827] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:41:12,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:41:12,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:41:12,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684205428] [2023-09-01 08:41:12,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:41:12,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:41:12,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:41:12,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:41:12,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:41:12,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 262 [2023-09-01 08:41:12,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:41:12,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 262 [2023-09-01 08:41:12,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:12,575 INFO L130 PetriNetUnfolder]: 1413/2298 cut-off events. [2023-09-01 08:41:12,575 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2023-09-01 08:41:12,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4723 conditions, 2298 events. 1413/2298 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11550 event pairs, 657 based on Foata normal form. 0/1774 useless extension candidates. Maximal degree in co-relation 4056. Up to 1317 conditions per place. [2023-09-01 08:41:12,587 INFO L137 encePairwiseOnDemand]: 257/262 looper letters, 56 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-09-01 08:41:12,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 62 transitions, 273 flow [2023-09-01 08:41:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:41:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:41:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-09-01 08:41:12,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788804071246819 [2023-09-01 08:41:12,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-09-01 08:41:12,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-09-01 08:41:12,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:12,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-09-01 08:41:12,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,599 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 92 flow. Second operand 3 states and 455 transitions. [2023-09-01 08:41:12,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 62 transitions, 273 flow [2023-09-01 08:41:12,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 62 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:41:12,602 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 106 flow [2023-09-01 08:41:12,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-09-01 08:41:12,603 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-09-01 08:41:12,603 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 106 flow [2023-09-01 08:41:12,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:41:12,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 08:41:12,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:41:12,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-09-01 08:41:12,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:41:12,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1139683391, now seen corresponding path program 1 times [2023-09-01 08:41:12,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:41:12,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406427536] [2023-09-01 08:41:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:12,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:41:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:41:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:41:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406427536] [2023-09-01 08:41:12,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406427536] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:41:12,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:41:12,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:41:12,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325449850] [2023-09-01 08:41:12,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:41:12,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:41:12,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:41:12,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:41:12,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:41:12,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 262 [2023-09-01 08:41:12,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:41:12,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 262 [2023-09-01 08:41:12,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:12,938 INFO L130 PetriNetUnfolder]: 1345/2188 cut-off events. [2023-09-01 08:41:12,938 INFO L131 PetriNetUnfolder]: For 389/389 co-relation queries the response was YES. [2023-09-01 08:41:12,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 2188 events. 1345/2188 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11814 event pairs, 159 based on Foata normal form. 0/1754 useless extension candidates. Maximal degree in co-relation 2450. Up to 1644 conditions per place. [2023-09-01 08:41:12,951 INFO L137 encePairwiseOnDemand]: 258/262 looper letters, 46 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-09-01 08:41:12,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 252 flow [2023-09-01 08:41:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:41:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:41:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-09-01 08:41:12,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610687022900763 [2023-09-01 08:41:12,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-09-01 08:41:12,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-09-01 08:41:12,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:12,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-09-01 08:41:12,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,957 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 106 flow. Second operand 3 states and 441 transitions. [2023-09-01 08:41:12,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 252 flow [2023-09-01 08:41:12,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:41:12,961 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 116 flow [2023-09-01 08:41:12,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-09-01 08:41:12,962 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-09-01 08:41:12,962 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 116 flow [2023-09-01 08:41:12,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:12,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:41:12,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 08:41:12,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:41:12,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-09-01 08:41:12,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:41:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1139683328, now seen corresponding path program 1 times [2023-09-01 08:41:12,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:41:12,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041421797] [2023-09-01 08:41:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:12,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:41:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:41:13,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:41:13,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041421797] [2023-09-01 08:41:13,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041421797] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:41:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574654303] [2023-09-01 08:41:13,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:13,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:41:13,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:41:13,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:41:13,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:41:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:13,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:41:13,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:41:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:41:13,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:41:13,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574654303] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:41:13,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:41:13,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:41:13,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143657122] [2023-09-01 08:41:13,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:41:13,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:41:13,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:41:13,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:41:13,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:41:13,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 262 [2023-09-01 08:41:13,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:13,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:41:13,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 262 [2023-09-01 08:41:13,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:13,479 INFO L130 PetriNetUnfolder]: 1277/2078 cut-off events. [2023-09-01 08:41:13,479 INFO L131 PetriNetUnfolder]: For 755/755 co-relation queries the response was YES. [2023-09-01 08:41:13,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4684 conditions, 2078 events. 1277/2078 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10726 event pairs, 17 based on Foata normal form. 38/1736 useless extension candidates. Maximal degree in co-relation 4456. Up to 1034 conditions per place. [2023-09-01 08:41:13,491 INFO L137 encePairwiseOnDemand]: 259/262 looper letters, 69 selfloop transitions, 2 changer transitions 1/76 dead transitions. [2023-09-01 08:41:13,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 76 transitions, 362 flow [2023-09-01 08:41:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:41:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:41:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 598 transitions. [2023-09-01 08:41:13,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706106870229007 [2023-09-01 08:41:13,494 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 598 transitions. [2023-09-01 08:41:13,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 598 transitions. [2023-09-01 08:41:13,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:13,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 598 transitions. [2023-09-01 08:41:13,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:13,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:13,499 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:13,499 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 116 flow. Second operand 4 states and 598 transitions. [2023-09-01 08:41:13,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 76 transitions, 362 flow [2023-09-01 08:41:13,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 76 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:41:13,502 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 112 flow [2023-09-01 08:41:13,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-09-01 08:41:13,503 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-09-01 08:41:13,503 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 112 flow [2023-09-01 08:41:13,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:13,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:41:13,504 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:41:13,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:41:13,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:41:13,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-09-01 08:41:13,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:41:13,711 INFO L85 PathProgramCache]: Analyzing trace with hash 151171422, now seen corresponding path program 1 times [2023-09-01 08:41:13,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:41:13,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459239746] [2023-09-01 08:41:13,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:13,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:41:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:41:13,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:41:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459239746] [2023-09-01 08:41:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459239746] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:41:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683346861] [2023-09-01 08:41:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:13,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:41:13,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:41:13,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:41:13,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:41:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:13,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:41:13,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:41:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:41:13,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:41:13,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683346861] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:41:13,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:41:13,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:41:13,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491867333] [2023-09-01 08:41:13,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:41:13,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:41:13,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:41:13,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:41:13,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:41:13,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 262 [2023-09-01 08:41:13,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:13,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:41:13,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 262 [2023-09-01 08:41:13,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:14,136 INFO L130 PetriNetUnfolder]: 1221/1988 cut-off events. [2023-09-01 08:41:14,137 INFO L131 PetriNetUnfolder]: For 763/763 co-relation queries the response was YES. [2023-09-01 08:41:14,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4437 conditions, 1988 events. 1221/1988 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9556 event pairs, 51 based on Foata normal form. 0/1654 useless extension candidates. Maximal degree in co-relation 3910. Up to 958 conditions per place. [2023-09-01 08:41:14,148 INFO L137 encePairwiseOnDemand]: 259/262 looper letters, 69 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-09-01 08:41:14,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 75 transitions, 374 flow [2023-09-01 08:41:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:41:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:41:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 594 transitions. [2023-09-01 08:41:14,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566793893129771 [2023-09-01 08:41:14,150 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 594 transitions. [2023-09-01 08:41:14,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 594 transitions. [2023-09-01 08:41:14,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:14,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 594 transitions. [2023-09-01 08:41:14,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.5) internal successors, (594), 4 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:14,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:14,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:14,165 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 112 flow. Second operand 4 states and 594 transitions. [2023-09-01 08:41:14,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 75 transitions, 374 flow [2023-09-01 08:41:14,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 75 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:41:14,168 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 109 flow [2023-09-01 08:41:14,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-09-01 08:41:14,168 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-09-01 08:41:14,169 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 109 flow [2023-09-01 08:41:14,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:14,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:41:14,169 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:41:14,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:41:14,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:41:14,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-09-01 08:41:14,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:41:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash 151171508, now seen corresponding path program 1 times [2023-09-01 08:41:14,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:41:14,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654503379] [2023-09-01 08:41:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:14,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:41:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:41:14,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:41:14,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654503379] [2023-09-01 08:41:14,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654503379] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:41:14,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:41:14,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:41:14,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506919387] [2023-09-01 08:41:14,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:41:14,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:41:14,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:41:14,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:41:14,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:41:14,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 262 [2023-09-01 08:41:14,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:14,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:41:14,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 262 [2023-09-01 08:41:14,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:14,585 INFO L130 PetriNetUnfolder]: 1165/1898 cut-off events. [2023-09-01 08:41:14,585 INFO L131 PetriNetUnfolder]: For 703/703 co-relation queries the response was YES. [2023-09-01 08:41:14,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 1898 events. 1165/1898 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9194 event pairs, 159 based on Foata normal form. 0/1610 useless extension candidates. Maximal degree in co-relation 3752. Up to 1350 conditions per place. [2023-09-01 08:41:14,590 INFO L137 encePairwiseOnDemand]: 258/262 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2023-09-01 08:41:14,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 255 flow [2023-09-01 08:41:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:41:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:41:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-09-01 08:41:14,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5559796437659033 [2023-09-01 08:41:14,598 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-09-01 08:41:14,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-09-01 08:41:14,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:14,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-09-01 08:41:14,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:14,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:14,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:14,602 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 109 flow. Second operand 3 states and 437 transitions. [2023-09-01 08:41:14,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 255 flow [2023-09-01 08:41:14,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:41:14,604 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-09-01 08:41:14,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-09-01 08:41:14,606 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-09-01 08:41:14,606 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-09-01 08:41:14,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:14,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-09-01 08:41:14,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2023-09-01 08:41:14,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-09-01 08:41:14,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-09-01 08:41:14,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-09-01 08:41:14,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-09-01 08:41:14,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-09-01 08:41:14,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-09-01 08:41:14,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-09-01 08:41:14,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-09-01 08:41:14,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:41:14,611 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-09-01 08:41:14,615 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:41:14,615 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:41:14,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:41:14 BasicIcfg [2023-09-01 08:41:14,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:41:14,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:41:14,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:41:14,622 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:41:14,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:41:06" (3/4) ... [2023-09-01 08:41:14,625 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:41:14,629 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-09-01 08:41:14,630 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-09-01 08:41:14,632 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-09-01 08:41:14,632 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 08:41:14,632 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:41:14,633 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:41:14,655 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:41:14,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:41:14,655 INFO L158 Benchmark]: Toolchain (without parser) took 9095.26ms. Allocated memory was 71.3MB in the beginning and 159.4MB in the end (delta: 88.1MB). Free memory was 38.2MB in the beginning and 98.8MB in the end (delta: -60.6MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2023-09-01 08:41:14,656 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 33.9MB in the beginning and 33.9MB in the end (delta: 34.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:41:14,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.62ms. Allocated memory is still 71.3MB. Free memory was 38.0MB in the beginning and 33.3MB in the end (delta: 4.7MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2023-09-01 08:41:14,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.50ms. Allocated memory is still 71.3MB. Free memory was 33.3MB in the beginning and 30.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:41:14,656 INFO L158 Benchmark]: Boogie Preprocessor took 56.96ms. Allocated memory is still 71.3MB. Free memory was 30.9MB in the beginning and 29.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:41:14,656 INFO L158 Benchmark]: RCFGBuilder took 561.57ms. Allocated memory is still 71.3MB. Free memory was 29.1MB in the beginning and 33.4MB in the end (delta: -4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:41:14,657 INFO L158 Benchmark]: TraceAbstraction took 7925.07ms. Allocated memory was 71.3MB in the beginning and 159.4MB in the end (delta: 88.1MB). Free memory was 32.8MB in the beginning and 102.0MB in the end (delta: -69.2MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. [2023-09-01 08:41:14,657 INFO L158 Benchmark]: Witness Printer took 32.70ms. Allocated memory is still 159.4MB. Free memory was 102.0MB in the beginning and 98.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:41:14,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 33.9MB in the beginning and 33.9MB in the end (delta: 34.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 441.62ms. Allocated memory is still 71.3MB. Free memory was 38.0MB in the beginning and 33.3MB in the end (delta: 4.7MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.50ms. Allocated memory is still 71.3MB. Free memory was 33.3MB in the beginning and 30.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.96ms. Allocated memory is still 71.3MB. Free memory was 30.9MB in the beginning and 29.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 561.57ms. Allocated memory is still 71.3MB. Free memory was 29.1MB in the beginning and 33.4MB in the end (delta: -4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7925.07ms. Allocated memory was 71.3MB in the beginning and 159.4MB in the end (delta: 88.1MB). Free memory was 32.8MB in the beginning and 102.0MB in the end (delta: -69.2MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. * Witness Printer took 32.70ms. Allocated memory is still 159.4MB. Free memory was 102.0MB in the beginning and 98.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 132 PlacesBefore, 37 PlacesAfterwards, 135 TransitionsBefore, 36 TransitionsAfterwards, 4392 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 116 TotalNumberOfCompositions, 8985 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5823, independent: 5542, independent conditional: 0, independent unconditional: 5542, dependent: 281, dependent conditional: 0, dependent unconditional: 281, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2436, independent: 2400, independent conditional: 0, independent unconditional: 2400, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5823, independent: 3142, independent conditional: 0, independent unconditional: 3142, dependent: 245, dependent conditional: 0, dependent unconditional: 245, unknown: 2436, unknown conditional: 0, unknown unconditional: 2436] , Statistics on independence cache: Total cache size (in pairs): 192, Positive cache size: 176, Positive conditional cache size: 0, Positive unconditional cache size: 176, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 724]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 724]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: 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, 211 locations, 10 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: 7.8s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 272 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 201 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 613 IncrementalHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 22 mSDtfsCounter, 613 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=3, InterpolantAutomatonStates: 20, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 360 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 16/24 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:41:14,683 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