./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:47:34,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:47:34,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:47:34,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:47:34,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:47:34,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:47:34,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:47:34,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:47:34,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:47:34,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:47:34,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:47:34,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:47:34,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:47:34,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:47:34,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:47:34,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:47:34,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:47:34,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:47:34,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:47:34,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:47:34,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:47:34,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:47:34,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:47:34,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:47:34,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:47:34,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:47:34,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:47:34,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:47:34,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:47:34,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:47:34,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:47:34,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:47:34,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:47:34,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:47:34,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:47:34,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:47:34,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:47:34,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:47:34,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:47:34,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:47:34,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:47:34,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:47:34,168 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:47:34,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:47:34,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:47:34,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:47:34,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:47:34,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:47:34,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:47:34,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:47:34,172 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:47:34,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:47:34,173 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:47:34,173 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:47:34,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:47:34,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:47:34,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:47:34,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:47:34,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:47:34,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:47:34,174 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:47:34,175 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:47:34,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:47:34,175 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:47:34,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:47:34,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:47:34,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:47:34,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:47:34,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:47:34,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:47:34,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:47:34,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:47:34,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:47:34,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:47:34,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:47:34,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:47:34,178 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:47:34,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:47:34,178 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:47:34,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:47:34,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:47:34,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:47:34,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:47:34,515 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:47:34,516 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:47:34,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2023-08-30 11:47:35,625 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:47:35,788 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:47:35,789 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2023-08-30 11:47:35,794 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b97e00e6b/a0090f734555445c8d1c368c2d2f0f92/FLAG94d6b5d7f [2023-08-30 11:47:35,808 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b97e00e6b/a0090f734555445c8d1c368c2d2f0f92 [2023-08-30 11:47:35,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:47:35,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:47:35,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:47:35,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:47:35,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:47:35,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:47:35" (1/1) ... [2023-08-30 11:47:35,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eab873e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:35, skipping insertion in model container [2023-08-30 11:47:35,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:47:35" (1/1) ... [2023-08-30 11:47:35,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:47:35,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:47:36,014 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c[2553,2566] [2023-08-30 11:47:36,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:47:36,034 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:47:36,070 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c[2553,2566] [2023-08-30 11:47:36,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:47:36,083 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:47:36,084 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:47:36,089 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:47:36,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36 WrapperNode [2023-08-30 11:47:36,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:47:36,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:47:36,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:47:36,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:47:36,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,147 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-08-30 11:47:36,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:47:36,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:47:36,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:47:36,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:47:36,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,196 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:47:36,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:47:36,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:47:36,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:47:36,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (1/1) ... [2023-08-30 11:47:36,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:47:36,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:36,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:47:36,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:47:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:47:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:47:36,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:47:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:47:36,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:47:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:47:36,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:47:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:47:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:47:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:47:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:47:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:47:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:47:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:47:36,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:47:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:47:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:47:36,284 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:47:36,386 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:47:36,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:47:36,698 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:47:36,768 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:47:36,769 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:47:36,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:47:36 BoogieIcfgContainer [2023-08-30 11:47:36,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:47:36,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:47:36,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:47:36,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:47:36,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:47:35" (1/3) ... [2023-08-30 11:47:36,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fc3d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:47:36, skipping insertion in model container [2023-08-30 11:47:36,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:36" (2/3) ... [2023-08-30 11:47:36,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fc3d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:47:36, skipping insertion in model container [2023-08-30 11:47:36,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:47:36" (3/3) ... [2023-08-30 11:47:36,778 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2023-08-30 11:47:36,785 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:47:36,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:47:36,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 11:47:36,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:47:36,855 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:47:36,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 158 transitions, 340 flow [2023-08-30 11:47:36,944 INFO L130 PetriNetUnfolder]: 12/155 cut-off events. [2023-08-30 11:47:36,945 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:47:36,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 155 events. 12/155 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 124 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2023-08-30 11:47:36,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 158 transitions, 340 flow [2023-08-30 11:47:36,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 137 transitions, 289 flow [2023-08-30 11:47:36,958 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:47:36,975 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 137 transitions, 289 flow [2023-08-30 11:47:36,982 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 137 transitions, 289 flow [2023-08-30 11:47:36,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 137 transitions, 289 flow [2023-08-30 11:47:37,030 INFO L130 PetriNetUnfolder]: 11/137 cut-off events. [2023-08-30 11:47:37,030 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:47:37,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 137 events. 11/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 122 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2023-08-30 11:47:37,033 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-08-30 11:47:42,279 INFO L134 LiptonReduction]: Checked pairs total: 2568 [2023-08-30 11:47:42,280 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-30 11:47:42,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:47:42,297 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;@44993415, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:47:42,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 11:47:42,300 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:47:42,300 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:47:42,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:42,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:47:42,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:42,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash 20422, now seen corresponding path program 1 times [2023-08-30 11:47:42,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:42,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326829192] [2023-08-30 11:47:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:42,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:42,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326829192] [2023-08-30 11:47:42,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326829192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:42,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:42,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:47:42,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050921086] [2023-08-30 11:47:42,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:42,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:42,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:42,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:42,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:47:42,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 298 [2023-08-30 11:47:42,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:42,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:42,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 298 [2023-08-30 11:47:42,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:43,128 INFO L130 PetriNetUnfolder]: 2489/3235 cut-off events. [2023-08-30 11:47:43,129 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 11:47:43,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6603 conditions, 3235 events. 2489/3235 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13748 event pairs, 1164 based on Foata normal form. 0/1174 useless extension candidates. Maximal degree in co-relation 2845. Up to 1619 conditions per place. [2023-08-30 11:47:43,151 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 49 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-30 11:47:43,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 240 flow [2023-08-30 11:47:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-08-30 11:47:43,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190156599552572 [2023-08-30 11:47:43,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-08-30 11:47:43,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-08-30 11:47:43,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:43,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-08-30 11:47:43,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:43,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:43,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:43,178 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 464 transitions. [2023-08-30 11:47:43,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 240 flow [2023-08-30 11:47:43,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:47:43,200 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 80 flow [2023-08-30 11:47:43,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-08-30 11:47:43,204 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-30 11:47:43,204 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 80 flow [2023-08-30 11:47:43,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:43,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:43,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:47:43,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:47:43,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:43,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:43,206 INFO L85 PathProgramCache]: Analyzing trace with hash 634470, now seen corresponding path program 1 times [2023-08-30 11:47:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723439226] [2023-08-30 11:47:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:43,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:43,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723439226] [2023-08-30 11:47:43,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723439226] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425921929] [2023-08-30 11:47:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:43,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:43,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:43,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:43,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:47:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:43,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:43,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:43,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:43,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425921929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:43,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:43,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:47:43,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809064256] [2023-08-30 11:47:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:43,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:47:43,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:43,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:47:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:47:43,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 298 [2023-08-30 11:47:43,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:43,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:43,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 298 [2023-08-30 11:47:43,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:43,843 INFO L130 PetriNetUnfolder]: 2489/3234 cut-off events. [2023-08-30 11:47:43,843 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 11:47:43,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6533 conditions, 3234 events. 2489/3234 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13659 event pairs, 1164 based on Foata normal form. 0/1176 useless extension candidates. Maximal degree in co-relation 3317. Up to 1619 conditions per place. [2023-08-30 11:47:43,862 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-30 11:47:43,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 228 flow [2023-08-30 11:47:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:47:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:47:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 599 transitions. [2023-08-30 11:47:43,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50251677852349 [2023-08-30 11:47:43,867 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 599 transitions. [2023-08-30 11:47:43,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 599 transitions. [2023-08-30 11:47:43,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:43,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 599 transitions. [2023-08-30 11:47:43,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:43,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:43,874 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:43,874 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 4 states and 599 transitions. [2023-08-30 11:47:43,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 228 flow [2023-08-30 11:47:43,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:43,876 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 78 flow [2023-08-30 11:47:43,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-08-30 11:47:43,877 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-08-30 11:47:43,877 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 78 flow [2023-08-30 11:47:43,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:43,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:43,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:47:43,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:44,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:44,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:44,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:44,086 INFO L85 PathProgramCache]: Analyzing trace with hash 634482, now seen corresponding path program 1 times [2023-08-30 11:47:44,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:44,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147711417] [2023-08-30 11:47:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:44,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:44,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:44,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147711417] [2023-08-30 11:47:44,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147711417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:44,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043335279] [2023-08-30 11:47:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:44,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:44,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:44,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:44,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:47:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:44,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:44,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:44,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:44,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043335279] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:44,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:44,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:47:44,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393247930] [2023-08-30 11:47:44,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:44,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:47:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:47:44,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:47:44,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 298 [2023-08-30 11:47:44,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:44,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:44,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 298 [2023-08-30 11:47:44,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:45,183 INFO L130 PetriNetUnfolder]: 6137/7998 cut-off events. [2023-08-30 11:47:45,184 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 11:47:45,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16140 conditions, 7998 events. 6137/7998 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 38519 event pairs, 2895 based on Foata normal form. 0/2925 useless extension candidates. Maximal degree in co-relation 12811. Up to 1619 conditions per place. [2023-08-30 11:47:45,236 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 117 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2023-08-30 11:47:45,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 125 transitions, 542 flow [2023-08-30 11:47:45,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:47:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:47:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 947 transitions. [2023-08-30 11:47:45,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296420581655481 [2023-08-30 11:47:45,240 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 947 transitions. [2023-08-30 11:47:45,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 947 transitions. [2023-08-30 11:47:45,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:45,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 947 transitions. [2023-08-30 11:47:45,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.83333333333334) internal successors, (947), 6 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:45,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:45,246 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:45,246 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 78 flow. Second operand 6 states and 947 transitions. [2023-08-30 11:47:45,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 125 transitions, 542 flow [2023-08-30 11:47:45,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 125 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:47:45,249 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 111 flow [2023-08-30 11:47:45,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-30 11:47:45,250 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-08-30 11:47:45,250 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 111 flow [2023-08-30 11:47:45,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:45,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:45,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:47:45,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:45,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 11:47:45,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:45,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:45,458 INFO L85 PathProgramCache]: Analyzing trace with hash 609387501, now seen corresponding path program 1 times [2023-08-30 11:47:45,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:45,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340798805] [2023-08-30 11:47:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:45,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:45,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:45,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340798805] [2023-08-30 11:47:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340798805] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:45,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:45,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:47:45,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313783314] [2023-08-30 11:47:45,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:45,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:45,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:45,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:45,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:47:45,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-08-30 11:47:45,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:45,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:45,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-08-30 11:47:45,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:46,495 INFO L130 PetriNetUnfolder]: 8376/11157 cut-off events. [2023-08-30 11:47:46,496 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 11:47:46,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22601 conditions, 11157 events. 8376/11157 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 59866 event pairs, 1935 based on Foata normal form. 0/4582 useless extension candidates. Maximal degree in co-relation 18073. Up to 7123 conditions per place. [2023-08-30 11:47:46,550 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-30 11:47:46,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 254 flow [2023-08-30 11:47:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:46,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-30 11:47:46,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167785234899329 [2023-08-30 11:47:46,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-30 11:47:46,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-30 11:47:46,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:46,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-30 11:47:46,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:46,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:46,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:46,556 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 111 flow. Second operand 3 states and 462 transitions. [2023-08-30 11:47:46,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 254 flow [2023-08-30 11:47:46,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 246 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:46,560 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 117 flow [2023-08-30 11:47:46,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-08-30 11:47:46,562 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-08-30 11:47:46,562 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 117 flow [2023-08-30 11:47:46,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:46,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:46,562 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:47:46,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:47:46,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:46,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:46,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1723004882, now seen corresponding path program 2 times [2023-08-30 11:47:46,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:46,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263839111] [2023-08-30 11:47:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:46,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:46,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:46,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263839111] [2023-08-30 11:47:46,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263839111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:46,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369050829] [2023-08-30 11:47:46,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:47:46,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:46,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:46,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:46,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:47:46,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:47:46,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:47:46,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:47:46,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:47:46,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:46,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369050829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:46,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:46,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:47:46,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429798860] [2023-08-30 11:47:46,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:46,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:46,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:47:46,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-08-30 11:47:46,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:46,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:46,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-08-30 11:47:46,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:47,691 INFO L130 PetriNetUnfolder]: 7346/9821 cut-off events. [2023-08-30 11:47:47,692 INFO L131 PetriNetUnfolder]: For 613/888 co-relation queries the response was YES. [2023-08-30 11:47:47,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21288 conditions, 9821 events. 7346/9821 cut-off events. For 613/888 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 52457 event pairs, 3945 based on Foata normal form. 276/4712 useless extension candidates. Maximal degree in co-relation 17020. Up to 9681 conditions per place. [2023-08-30 11:47:47,746 INFO L137 encePairwiseOnDemand]: 296/298 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-30 11:47:47,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 167 flow [2023-08-30 11:47:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-30 11:47:47,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49217002237136465 [2023-08-30 11:47:47,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-30 11:47:47,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-30 11:47:47,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:47,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-30 11:47:47,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:47,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:47,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:47,754 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 117 flow. Second operand 3 states and 440 transitions. [2023-08-30 11:47:47,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 167 flow [2023-08-30 11:47:47,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 155 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 11:47:47,758 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 97 flow [2023-08-30 11:47:47,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-30 11:47:47,760 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-08-30 11:47:47,760 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 97 flow [2023-08-30 11:47:47,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:47,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:47,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:47:47,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:47,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:47,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:47,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:47,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1711144876, now seen corresponding path program 1 times [2023-08-30 11:47:47,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:47,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552692687] [2023-08-30 11:47:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:47,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:48,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:48,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552692687] [2023-08-30 11:47:48,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552692687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:48,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62607352] [2023-08-30 11:47:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:48,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:48,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:48,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:48,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:47:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:48,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:47:48,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:48,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:48,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62607352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:48,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:48,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 11:47:48,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51670502] [2023-08-30 11:47:48,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:48,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:47:48,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:48,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:47:48,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:47:48,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 298 [2023-08-30 11:47:48,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:48,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:48,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 298 [2023-08-30 11:47:48,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:48,854 INFO L130 PetriNetUnfolder]: 6597/8822 cut-off events. [2023-08-30 11:47:48,855 INFO L131 PetriNetUnfolder]: For 708/708 co-relation queries the response was YES. [2023-08-30 11:47:48,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18977 conditions, 8822 events. 6597/8822 cut-off events. For 708/708 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 46255 event pairs, 3596 based on Foata normal form. 1/4067 useless extension candidates. Maximal degree in co-relation 18968. Up to 8690 conditions per place. [2023-08-30 11:47:48,896 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 29 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-30 11:47:48,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 159 flow [2023-08-30 11:47:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-08-30 11:47:48,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470917225950783 [2023-08-30 11:47:48,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-08-30 11:47:48,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-08-30 11:47:48,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:48,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-08-30 11:47:48,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:48,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:48,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:48,901 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 97 flow. Second operand 3 states and 421 transitions. [2023-08-30 11:47:48,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 159 flow [2023-08-30 11:47:48,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 156 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:48,903 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 102 flow [2023-08-30 11:47:48,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-30 11:47:48,904 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-08-30 11:47:48,904 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 102 flow [2023-08-30 11:47:48,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:48,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:48,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:48,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 11:47:49,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:49,117 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:49,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:49,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1861684793, now seen corresponding path program 1 times [2023-08-30 11:47:49,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:49,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031558436] [2023-08-30 11:47:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:49,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:49,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:49,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031558436] [2023-08-30 11:47:49,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031558436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:49,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:49,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:47:49,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714020577] [2023-08-30 11:47:49,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:49,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:49,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:47:49,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-08-30 11:47:49,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:49,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:49,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-08-30 11:47:49,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:49,751 INFO L130 PetriNetUnfolder]: 6409/8386 cut-off events. [2023-08-30 11:47:49,751 INFO L131 PetriNetUnfolder]: For 864/864 co-relation queries the response was YES. [2023-08-30 11:47:49,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18012 conditions, 8386 events. 6409/8386 cut-off events. For 864/864 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 39015 event pairs, 2460 based on Foata normal form. 0/3982 useless extension candidates. Maximal degree in co-relation 18001. Up to 7616 conditions per place. [2023-08-30 11:47:49,784 INFO L137 encePairwiseOnDemand]: 296/298 looper letters, 42 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-30 11:47:49,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 213 flow [2023-08-30 11:47:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-30 11:47:49,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067114093959731 [2023-08-30 11:47:49,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-30 11:47:49,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-30 11:47:49,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:49,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-30 11:47:49,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:49,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:49,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:49,790 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 102 flow. Second operand 3 states and 453 transitions. [2023-08-30 11:47:49,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 213 flow [2023-08-30 11:47:49,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:47:49,792 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 96 flow [2023-08-30 11:47:49,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-08-30 11:47:49,793 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-08-30 11:47:49,793 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 96 flow [2023-08-30 11:47:49,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:49,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:49,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:49,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:47:49,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:49,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:49,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1861684812, now seen corresponding path program 1 times [2023-08-30 11:47:49,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:49,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65334889] [2023-08-30 11:47:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:49,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:49,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:49,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65334889] [2023-08-30 11:47:49,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65334889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:49,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373900331] [2023-08-30 11:47:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:49,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:49,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:49,845 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:49,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:47:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:49,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:49,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:49,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373900331] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:49,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:49,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:47:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29289377] [2023-08-30 11:47:49,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:49,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:47:49,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:47:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:47:49,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-08-30 11:47:49,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 139.71428571428572) internal successors, (978), 7 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:49,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:49,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-08-30 11:47:49,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:51,150 INFO L130 PetriNetUnfolder]: 13477/17662 cut-off events. [2023-08-30 11:47:51,150 INFO L131 PetriNetUnfolder]: For 940/940 co-relation queries the response was YES. [2023-08-30 11:47:51,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37738 conditions, 17662 events. 13477/17662 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 97752 event pairs, 1996 based on Foata normal form. 0/8594 useless extension candidates. Maximal degree in co-relation 37728. Up to 5067 conditions per place. [2023-08-30 11:47:51,243 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 100 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2023-08-30 11:47:51,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 107 transitions, 482 flow [2023-08-30 11:47:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:47:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:47:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 932 transitions. [2023-08-30 11:47:51,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212527964205816 [2023-08-30 11:47:51,246 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 932 transitions. [2023-08-30 11:47:51,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 932 transitions. [2023-08-30 11:47:51,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:51,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 932 transitions. [2023-08-30 11:47:51,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:51,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:51,252 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:51,252 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 96 flow. Second operand 6 states and 932 transitions. [2023-08-30 11:47:51,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 107 transitions, 482 flow [2023-08-30 11:47:51,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 107 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:51,255 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 131 flow [2023-08-30 11:47:51,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2023-08-30 11:47:51,256 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-08-30 11:47:51,256 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 131 flow [2023-08-30 11:47:51,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.71428571428572) internal successors, (978), 7 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:51,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:51,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:51,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:51,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:51,463 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:51,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1882527800, now seen corresponding path program 1 times [2023-08-30 11:47:51,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361499432] [2023-08-30 11:47:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:51,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:51,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:51,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361499432] [2023-08-30 11:47:51,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361499432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:51,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:51,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:47:51,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314817497] [2023-08-30 11:47:51,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:51,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:51,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:51,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:51,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:47:51,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-08-30 11:47:51,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:51,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:51,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-08-30 11:47:51,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:52,900 INFO L130 PetriNetUnfolder]: 14673/20270 cut-off events. [2023-08-30 11:47:52,901 INFO L131 PetriNetUnfolder]: For 14532/15196 co-relation queries the response was YES. [2023-08-30 11:47:52,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46929 conditions, 20270 events. 14673/20270 cut-off events. For 14532/15196 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 126868 event pairs, 6792 based on Foata normal form. 664/12446 useless extension candidates. Maximal degree in co-relation 46916. Up to 14139 conditions per place. [2023-08-30 11:47:53,050 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 51 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-30 11:47:53,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 315 flow [2023-08-30 11:47:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-30 11:47:53,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111856823266219 [2023-08-30 11:47:53,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-30 11:47:53,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-30 11:47:53,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:53,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-30 11:47:53,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:53,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:53,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:53,056 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 131 flow. Second operand 3 states and 457 transitions. [2023-08-30 11:47:53,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 315 flow [2023-08-30 11:47:53,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 55 transitions, 300 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:53,064 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 137 flow [2023-08-30 11:47:53,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-08-30 11:47:53,065 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-08-30 11:47:53,065 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 137 flow [2023-08-30 11:47:53,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:53,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:53,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:53,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:47:53,066 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:53,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:53,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1771179448, now seen corresponding path program 1 times [2023-08-30 11:47:53,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:53,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270339717] [2023-08-30 11:47:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:53,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270339717] [2023-08-30 11:47:53,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270339717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54102505] [2023-08-30 11:47:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:53,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:53,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:53,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:53,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:47:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:53,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:53,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:53,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:53,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54102505] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:53,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:53,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:47:53,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045880585] [2023-08-30 11:47:53,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:53,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:47:53,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:53,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:47:53,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:47:53,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-08-30 11:47:53,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:53,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:53,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-08-30 11:47:53,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:55,468 INFO L130 PetriNetUnfolder]: 30177/40742 cut-off events. [2023-08-30 11:47:55,468 INFO L131 PetriNetUnfolder]: For 24340/25580 co-relation queries the response was YES. [2023-08-30 11:47:55,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100031 conditions, 40742 events. 30177/40742 cut-off events. For 24340/25580 co-relation queries the response was YES. Maximal size of possible extension queue 2181. Compared 261302 event pairs, 4292 based on Foata normal form. 1240/27406 useless extension candidates. Maximal degree in co-relation 100016. Up to 11383 conditions per place. [2023-08-30 11:47:55,708 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 123 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2023-08-30 11:47:55,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 134 transitions, 763 flow [2023-08-30 11:47:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:47:55,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:47:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1073 transitions. [2023-08-30 11:47:55,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143815915627996 [2023-08-30 11:47:55,713 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1073 transitions. [2023-08-30 11:47:55,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1073 transitions. [2023-08-30 11:47:55,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:55,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1073 transitions. [2023-08-30 11:47:55,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:55,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:55,719 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:55,719 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 137 flow. Second operand 7 states and 1073 transitions. [2023-08-30 11:47:55,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 134 transitions, 763 flow [2023-08-30 11:47:55,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 134 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:55,736 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 194 flow [2023-08-30 11:47:55,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-08-30 11:47:55,737 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-08-30 11:47:55,737 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 194 flow [2023-08-30 11:47:55,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:55,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:55,739 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:55,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:55,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:55,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:55,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:55,945 INFO L85 PathProgramCache]: Analyzing trace with hash 928012855, now seen corresponding path program 1 times [2023-08-30 11:47:55,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:55,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426126444] [2023-08-30 11:47:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:55,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426126444] [2023-08-30 11:47:56,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426126444] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909582716] [2023-08-30 11:47:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:56,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:56,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:56,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:56,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:47:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:56,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:47:56,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:56,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:56,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909582716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:56,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:56,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-30 11:47:56,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048159970] [2023-08-30 11:47:56,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:56,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:47:56,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:56,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:47:56,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:47:56,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-08-30 11:47:56,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:56,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:56,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-08-30 11:47:56,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:58,462 INFO L130 PetriNetUnfolder]: 26221/36058 cut-off events. [2023-08-30 11:47:58,462 INFO L131 PetriNetUnfolder]: For 22860/24012 co-relation queries the response was YES. [2023-08-30 11:47:58,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95130 conditions, 36058 events. 26221/36058 cut-off events. For 22860/24012 co-relation queries the response was YES. Maximal size of possible extension queue 2009. Compared 243002 event pairs, 824 based on Foata normal form. 2608/28342 useless extension candidates. Maximal degree in co-relation 95112. Up to 21804 conditions per place. [2023-08-30 11:47:58,646 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 87 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-08-30 11:47:58,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 92 transitions, 547 flow [2023-08-30 11:47:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:47:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:47:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 760 transitions. [2023-08-30 11:47:58,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100671140939598 [2023-08-30 11:47:58,650 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 760 transitions. [2023-08-30 11:47:58,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 760 transitions. [2023-08-30 11:47:58,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:58,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 760 transitions. [2023-08-30 11:47:58,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:58,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:58,656 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:58,656 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 194 flow. Second operand 5 states and 760 transitions. [2023-08-30 11:47:58,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 92 transitions, 547 flow [2023-08-30 11:47:58,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 539 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:58,903 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 165 flow [2023-08-30 11:47:58,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2023-08-30 11:47:58,904 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-08-30 11:47:58,904 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 165 flow [2023-08-30 11:47:58,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:58,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:58,905 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:58,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:59,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:59,106 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:47:59,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:59,106 INFO L85 PathProgramCache]: Analyzing trace with hash 541059341, now seen corresponding path program 2 times [2023-08-30 11:47:59,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:59,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479958529] [2023-08-30 11:47:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:59,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 11:47:59,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:59,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479958529] [2023-08-30 11:47:59,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479958529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:59,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657915460] [2023-08-30 11:47:59,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:47:59,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:59,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:59,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:59,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:47:59,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:47:59,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:47:59,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:59,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 11:47:59,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:59,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657915460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:59,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:59,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 11:47:59,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600671790] [2023-08-30 11:47:59,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:59,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:59,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:59,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:47:59,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-08-30 11:47:59,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:59,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:59,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-08-30 11:47:59,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:01,139 INFO L130 PetriNetUnfolder]: 17365/24434 cut-off events. [2023-08-30 11:48:01,139 INFO L131 PetriNetUnfolder]: For 29824/31696 co-relation queries the response was YES. [2023-08-30 11:48:01,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62831 conditions, 24434 events. 17365/24434 cut-off events. For 29824/31696 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 160321 event pairs, 12052 based on Foata normal form. 2320/20874 useless extension candidates. Maximal degree in co-relation 62812. Up to 24286 conditions per place. [2023-08-30 11:48:01,230 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 32 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-30 11:48:01,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 36 transitions, 219 flow [2023-08-30 11:48:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-30 11:48:01,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888143176733781 [2023-08-30 11:48:01,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-30 11:48:01,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-30 11:48:01,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:01,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-30 11:48:01,235 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) [2023-08-30 11:48:01,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:01,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:01,237 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 165 flow. Second operand 3 states and 437 transitions. [2023-08-30 11:48:01,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 36 transitions, 219 flow [2023-08-30 11:48:01,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 36 transitions, 204 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-30 11:48:01,264 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 140 flow [2023-08-30 11:48:01,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-08-30 11:48:01,264 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2023-08-30 11:48:01,265 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 140 flow [2023-08-30 11:48:01,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:01,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:01,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:01,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:01,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 11:48:01,466 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:01,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:01,466 INFO L85 PathProgramCache]: Analyzing trace with hash 932526832, now seen corresponding path program 1 times [2023-08-30 11:48:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297209920] [2023-08-30 11:48:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:01,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:48:01,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:01,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297209920] [2023-08-30 11:48:01,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297209920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:01,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:01,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:01,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415425781] [2023-08-30 11:48:01,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:01,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:48:01,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:48:01,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:48:01,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 298 [2023-08-30 11:48:01,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:01,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:01,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 298 [2023-08-30 11:48:01,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:02,710 INFO L130 PetriNetUnfolder]: 11685/17234 cut-off events. [2023-08-30 11:48:02,710 INFO L131 PetriNetUnfolder]: For 14552/15748 co-relation queries the response was YES. [2023-08-30 11:48:02,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43820 conditions, 17234 events. 11685/17234 cut-off events. For 14552/15748 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 112243 event pairs, 3220 based on Foata normal form. 1196/16902 useless extension candidates. Maximal degree in co-relation 43804. Up to 11120 conditions per place. [2023-08-30 11:48:02,768 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 43 selfloop transitions, 2 changer transitions 6/53 dead transitions. [2023-08-30 11:48:02,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 316 flow [2023-08-30 11:48:02,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:48:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:48:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 576 transitions. [2023-08-30 11:48:02,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48322147651006714 [2023-08-30 11:48:02,770 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 576 transitions. [2023-08-30 11:48:02,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 576 transitions. [2023-08-30 11:48:02,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:02,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 576 transitions. [2023-08-30 11:48:02,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:02,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:02,775 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:02,775 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 140 flow. Second operand 4 states and 576 transitions. [2023-08-30 11:48:02,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 316 flow [2023-08-30 11:48:02,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:02,790 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 134 flow [2023-08-30 11:48:02,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2023-08-30 11:48:02,791 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-08-30 11:48:02,791 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 134 flow [2023-08-30 11:48:02,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:02,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:02,792 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:02,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:48:02,792 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 11:48:02,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1532814280, now seen corresponding path program 2 times [2023-08-30 11:48:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:02,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633924412] [2023-08-30 11:48:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:48:02,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:02,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633924412] [2023-08-30 11:48:02,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633924412] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:02,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250452547] [2023-08-30 11:48:02,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:48:02,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:02,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:02,869 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:02,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 11:48:02,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:48:02,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:48:02,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:02,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 11:48:02,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:02,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250452547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:02,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:02,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 11:48:02,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954392794] [2023-08-30 11:48:02,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:02,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:02,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:02,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:48:02,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 298 [2023-08-30 11:48:02,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:02,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:02,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 298 [2023-08-30 11:48:02,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:03,605 INFO L130 PetriNetUnfolder]: 5429/7738 cut-off events. [2023-08-30 11:48:03,606 INFO L131 PetriNetUnfolder]: For 10716/11648 co-relation queries the response was YES. [2023-08-30 11:48:03,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21437 conditions, 7738 events. 5429/7738 cut-off events. For 10716/11648 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 43141 event pairs, 3684 based on Foata normal form. 1372/7930 useless extension candidates. Maximal degree in co-relation 21420. Up to 7654 conditions per place. [2023-08-30 11:48:03,620 INFO L137 encePairwiseOnDemand]: 296/298 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-08-30 11:48:03,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 31 transitions, 180 flow [2023-08-30 11:48:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-30 11:48:03,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48210290827740493 [2023-08-30 11:48:03,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-30 11:48:03,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-30 11:48:03,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:03,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-30 11:48:03,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:03,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:03,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:03,626 INFO L175 Difference]: Start difference. First operand has 52 places, 32 transitions, 134 flow. Second operand 3 states and 431 transitions. [2023-08-30 11:48:03,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 31 transitions, 180 flow [2023-08-30 11:48:03,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 159 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-30 11:48:03,648 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-30 11:48:03,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-30 11:48:03,649 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-08-30 11:48:03,649 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-30 11:48:03,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:03,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-08-30 11:48:03,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 11:48:03,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 11:48:03,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 11:48:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 11:48:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 11:48:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 11:48:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 11:48:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-08-30 11:48:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-08-30 11:48:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-08-30 11:48:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 11:48:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 11:48:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 11:48:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 11:48:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 11:48:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 11:48:03,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:03,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 11:48:03,860 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:03,863 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:48:03,864 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:48:03,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:48:03 BasicIcfg [2023-08-30 11:48:03,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:48:03,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:48:03,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:48:03,867 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:48:03,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:47:36" (3/4) ... [2023-08-30 11:48:03,869 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:48:03,872 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:48:03,872 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:48:03,872 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 11:48:03,875 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 11:48:03,876 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:48:03,876 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:48:03,876 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:48:03,905 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:48:03,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:48:03,906 INFO L158 Benchmark]: Toolchain (without parser) took 28094.89ms. Allocated memory was 75.5MB in the beginning and 6.3GB in the end (delta: 6.3GB). Free memory was 47.4MB in the beginning and 5.5GB in the end (delta: -5.4GB). Peak memory consumption was 832.3MB. Max. memory is 16.1GB. [2023-08-30 11:48:03,906 INFO L158 Benchmark]: CDTParser took 1.47ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:48:03,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.37ms. Allocated memory is still 75.5MB. Free memory was 47.1MB in the beginning and 53.6MB in the end (delta: -6.5MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2023-08-30 11:48:03,907 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.42ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 51.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:48:03,907 INFO L158 Benchmark]: Boogie Preprocessor took 55.28ms. Allocated memory is still 75.5MB. Free memory was 51.9MB in the beginning and 50.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:48:03,907 INFO L158 Benchmark]: RCFGBuilder took 566.12ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 51.8MB in the end (delta: -1.8MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2023-08-30 11:48:03,908 INFO L158 Benchmark]: TraceAbstraction took 27093.35ms. Allocated memory was 75.5MB in the beginning and 6.3GB in the end (delta: 6.3GB). Free memory was 51.1MB in the beginning and 5.5GB in the end (delta: -5.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-08-30 11:48:03,908 INFO L158 Benchmark]: Witness Printer took 39.22ms. Allocated memory is still 6.3GB. Free memory was 5.5GB in the beginning and 5.5GB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:48:03,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.47ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.37ms. Allocated memory is still 75.5MB. Free memory was 47.1MB in the beginning and 53.6MB in the end (delta: -6.5MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.42ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 51.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.28ms. Allocated memory is still 75.5MB. Free memory was 51.9MB in the beginning and 50.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 566.12ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 51.8MB in the end (delta: -1.8MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * TraceAbstraction took 27093.35ms. Allocated memory was 75.5MB in the beginning and 6.3GB in the end (delta: 6.3GB). Free memory was 51.1MB in the beginning and 5.5GB in the end (delta: -5.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 39.22ms. Allocated memory is still 6.3GB. Free memory was 5.5GB in the beginning and 5.5GB in the end (delta: 3.5MB). 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: 5.3s, 136 PlacesBefore, 36 PlacesAfterwards, 137 TransitionsBefore, 30 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 140 TotalNumberOfCompositions, 2568 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2358, independent: 2332, independent conditional: 0, independent unconditional: 2332, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1226, independent: 1213, independent conditional: 0, independent unconditional: 1213, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2358, independent: 1119, independent conditional: 0, independent unconditional: 1119, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 1226, unknown conditional: 0, unknown unconditional: 1226] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: 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 7 procedures, 189 locations, 17 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: 27.0s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 956 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 798 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1317 IncrementalHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 40 mSDtfsCounter, 1317 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 164 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 375 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1210 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 26 InterpolantComputations, 11 PerfectInterpolantSequences, 57/95 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:48:03,936 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