./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.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-prod-cons3.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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --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 11:52:18,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:52:18,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:52:18,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:52:18,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:52:18,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:52:18,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:52:18,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:52:18,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:52:18,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:52:18,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:52:18,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:52:18,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:52:18,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:52:18,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:52:18,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:52:18,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:52:18,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:52:18,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:52:18,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:52:18,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:52:18,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:52:18,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:52:18,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:52:18,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:52:18,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:52:18,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:52:18,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:52:18,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:52:18,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:52:18,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:52:18,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:52:18,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:52:18,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:52:18,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:52:18,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:52:18,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:52:18,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:52:18,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:52:18,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:52:18,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:52:18,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:52:18,122 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:52:18,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:52:18,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:52:18,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:52:18,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:52:18,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:52:18,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:52:18,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:52:18,125 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:52:18,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:52:18,126 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:52:18,126 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:52:18,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:52:18,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:52:18,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:52:18,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:52:18,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:52:18,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:52:18,127 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:52:18,127 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:52:18,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:52:18,128 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:52:18,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:52:18,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:52:18,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:52:18,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:52:18,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:52:18,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:52:18,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:52:18,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:52:18,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:52:18,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:52:18,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:52:18,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:52:18,130 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:52:18,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:52:18,130 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:52:18,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:52:18,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:52:18,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:52:18,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:52:18,494 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:52:18,494 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:52:18,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-08-30 11:52:19,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:52:19,864 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:52:19,865 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-08-30 11:52:19,873 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26aa64fae/29a6beae3a4e4194bbd6fe3d3f0a7929/FLAGb44cc7b1c [2023-08-30 11:52:19,891 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26aa64fae/29a6beae3a4e4194bbd6fe3d3f0a7929 [2023-08-30 11:52:19,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:52:19,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:52:19,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:52:19,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:52:19,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:52:19,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:52:19" (1/1) ... [2023-08-30 11:52:19,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a459dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:19, skipping insertion in model container [2023-08-30 11:52:19,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:52:19" (1/1) ... [2023-08-30 11:52:19,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:52:19,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:52:20,118 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-prod-cons3.wvr.c[4007,4020] [2023-08-30 11:52:20,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:52:20,136 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:52:20,179 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-prod-cons3.wvr.c[4007,4020] [2023-08-30 11:52:20,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:52:20,193 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:52:20,193 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:52:20,199 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:52:20,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20 WrapperNode [2023-08-30 11:52:20,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:52:20,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:52:20,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:52:20,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:52:20,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,252 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 294 [2023-08-30 11:52:20,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:52:20,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:52:20,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:52:20,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:52:20,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,284 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:52:20,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:52:20,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:52:20,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:52:20,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (1/1) ... [2023-08-30 11:52:20,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:52:20,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:52:20,316 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 11:52:20,324 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 11:52:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:52:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:52:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:52:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:52:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:52:20,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:52:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:52:20,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:52:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:52:20,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:52:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:52:20,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:52:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:52:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:52:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:52:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:52:20,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:52:20,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:52:20,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:52:20,353 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 11:52:20,444 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:52:20,446 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:52:20,862 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:52:20,983 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:52:20,983 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 11:52:20,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:52:20 BoogieIcfgContainer [2023-08-30 11:52:20,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:52:20,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:52:20,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:52:20,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:52:20,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:52:19" (1/3) ... [2023-08-30 11:52:20,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ce82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:52:20, skipping insertion in model container [2023-08-30 11:52:20,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:20" (2/3) ... [2023-08-30 11:52:20,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ce82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:52:20, skipping insertion in model container [2023-08-30 11:52:20,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:52:20" (3/3) ... [2023-08-30 11:52:20,994 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2023-08-30 11:52:21,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:52:21,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:52:21,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-30 11:52:21,009 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:52:21,135 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 11:52:21,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 253 transitions, 538 flow [2023-08-30 11:52:21,281 INFO L130 PetriNetUnfolder]: 18/249 cut-off events. [2023-08-30 11:52:21,282 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:52:21,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 249 events. 18/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 217. Up to 3 conditions per place. [2023-08-30 11:52:21,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 253 transitions, 538 flow [2023-08-30 11:52:21,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 229 transitions, 479 flow [2023-08-30 11:52:21,320 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:52:21,328 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 229 transitions, 479 flow [2023-08-30 11:52:21,330 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 229 transitions, 479 flow [2023-08-30 11:52:21,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 229 transitions, 479 flow [2023-08-30 11:52:21,382 INFO L130 PetriNetUnfolder]: 17/229 cut-off events. [2023-08-30 11:52:21,383 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:52:21,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 229 events. 17/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 243 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 217. Up to 3 conditions per place. [2023-08-30 11:52:21,388 INFO L119 LiptonReduction]: Number of co-enabled transitions 4328 [2023-08-30 11:52:29,782 INFO L134 LiptonReduction]: Checked pairs total: 12773 [2023-08-30 11:52:29,782 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-08-30 11:52:29,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:52:29,809 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;@7830f21b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:52:29,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-08-30 11:52:29,813 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:52:29,813 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:52:29,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:52:29,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:52:29,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:52:29,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:52:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash 35217, now seen corresponding path program 1 times [2023-08-30 11:52:29,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:52:29,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869828278] [2023-08-30 11:52:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:52:29,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:52:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:52:30,113 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 11:52:30,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:52:30,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869828278] [2023-08-30 11:52:30,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869828278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:52:30,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:52:30,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:52:30,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401986065] [2023-08-30 11:52:30,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:52:30,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:52:30,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:52:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:52:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:52:30,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-08-30 11:52:30,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:30,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:52:30,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-08-30 11:52:30,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:52:33,203 INFO L130 PetriNetUnfolder]: 34763/46437 cut-off events. [2023-08-30 11:52:33,204 INFO L131 PetriNetUnfolder]: For 1934/1934 co-relation queries the response was YES. [2023-08-30 11:52:33,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94682 conditions, 46437 events. 34763/46437 cut-off events. For 1934/1934 co-relation queries the response was YES. Maximal size of possible extension queue 2570. Compared 273299 event pairs, 30576 based on Foata normal form. 0/23654 useless extension candidates. Maximal degree in co-relation 43122. Up to 22430 conditions per place. [2023-08-30 11:52:33,482 INFO L137 encePairwiseOnDemand]: 478/490 looper letters, 87 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-08-30 11:52:33,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 414 flow [2023-08-30 11:52:33,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:52:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:52:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2023-08-30 11:52:33,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2023-08-30 11:52:33,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2023-08-30 11:52:33,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2023-08-30 11:52:33,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:52:33,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2023-08-30 11:52:33,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:33,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:33,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:33,515 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 133 flow. Second operand 3 states and 721 transitions. [2023-08-30 11:52:33,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 414 flow [2023-08-30 11:52:33,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 95 transitions, 388 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 11:52:33,575 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 148 flow [2023-08-30 11:52:33,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-08-30 11:52:33,583 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2023-08-30 11:52:33,583 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 148 flow [2023-08-30 11:52:33,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:33,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:52:33,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:52:33,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:52:33,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:52:33,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:52:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1093092, now seen corresponding path program 1 times [2023-08-30 11:52:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:52:33,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470165603] [2023-08-30 11:52:33,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:52:33,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:52:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:52:33,698 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 11:52:33,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:52:33,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470165603] [2023-08-30 11:52:33,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470165603] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:52:33,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526163206] [2023-08-30 11:52:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:52:33,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:52:33,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:52:33,702 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 11:52:33,740 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 11:52:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:52:33,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:52:33,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:52:33,824 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 11:52:33,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:52:33,836 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 11:52:33,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526163206] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:52:33,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:52:33,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:52:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969274940] [2023-08-30 11:52:33,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:52:33,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:52:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:52:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:52:33,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:52:33,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-08-30 11:52:33,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:33,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:52:33,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-08-30 11:52:33,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:52:40,143 INFO L130 PetriNetUnfolder]: 86912/116091 cut-off events. [2023-08-30 11:52:40,161 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2023-08-30 11:52:40,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234844 conditions, 116091 events. 86912/116091 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 5707. Compared 753451 event pairs, 76440 based on Foata normal form. 0/59145 useless extension candidates. Maximal degree in co-relation 187831. Up to 22428 conditions per place. [2023-08-30 11:52:40,786 INFO L137 encePairwiseOnDemand]: 482/490 looper letters, 205 selfloop transitions, 21 changer transitions 0/230 dead transitions. [2023-08-30 11:52:40,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 230 transitions, 1018 flow [2023-08-30 11:52:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:52:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:52:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1674 transitions. [2023-08-30 11:52:40,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880466472303207 [2023-08-30 11:52:40,792 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1674 transitions. [2023-08-30 11:52:40,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1674 transitions. [2023-08-30 11:52:40,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:52:40,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1674 transitions. [2023-08-30 11:52:40,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 239.14285714285714) internal successors, (1674), 7 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:40,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 490.0) internal successors, (3920), 8 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:40,800 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 490.0) internal successors, (3920), 8 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:40,800 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 148 flow. Second operand 7 states and 1674 transitions. [2023-08-30 11:52:40,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 230 transitions, 1018 flow [2023-08-30 11:52:40,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 230 transitions, 1004 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:52:40,805 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 279 flow [2023-08-30 11:52:40,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-08-30 11:52:40,805 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2023-08-30 11:52:40,805 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 279 flow [2023-08-30 11:52:40,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:40,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:52:40,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:52:40,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:52:41,011 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 11:52:41,012 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:52:41,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:52:41,015 INFO L85 PathProgramCache]: Analyzing trace with hash 33887218, now seen corresponding path program 1 times [2023-08-30 11:52:41,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:52:41,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055445676] [2023-08-30 11:52:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:52:41,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:52:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:52:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:52:41,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:52:41,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055445676] [2023-08-30 11:52:41,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055445676] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:52:41,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896918821] [2023-08-30 11:52:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:52:41,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:52:41,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:52:41,087 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 11:52:41,131 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 11:52:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:52:41,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:52:41,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:52:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:52:41,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:52:41,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896918821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:52:41,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:52:41,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:52:41,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445165382] [2023-08-30 11:52:41,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:52:41,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:52:41,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:52:41,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:52:41,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:52:41,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-08-30 11:52:41,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 206.8) internal successors, (1034), 5 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:41,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:52:41,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-08-30 11:52:41,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:52:47,986 INFO L130 PetriNetUnfolder]: 86906/116083 cut-off events. [2023-08-30 11:52:47,986 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2023-08-30 11:52:48,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234846 conditions, 116083 events. 86906/116083 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 5241. Compared 745143 event pairs, 76440 based on Foata normal form. 2/59147 useless extension candidates. Maximal degree in co-relation 140888. Up to 67273 conditions per place. [2023-08-30 11:52:48,614 INFO L137 encePairwiseOnDemand]: 484/490 looper letters, 129 selfloop transitions, 9 changer transitions 0/142 dead transitions. [2023-08-30 11:52:48,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 142 transitions, 677 flow [2023-08-30 11:52:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:52:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:52:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1166 transitions. [2023-08-30 11:52:48,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47591836734693876 [2023-08-30 11:52:48,617 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1166 transitions. [2023-08-30 11:52:48,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1166 transitions. [2023-08-30 11:52:48,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:52:48,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1166 transitions. [2023-08-30 11:52:48,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.2) internal successors, (1166), 5 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:48,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 490.0) internal successors, (2940), 6 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:48,623 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 490.0) internal successors, (2940), 6 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:48,623 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 279 flow. Second operand 5 states and 1166 transitions. [2023-08-30 11:52:48,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 142 transitions, 677 flow [2023-08-30 11:52:48,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 658 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:52:48,626 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 224 flow [2023-08-30 11:52:48,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-08-30 11:52:48,627 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2023-08-30 11:52:48,627 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 224 flow [2023-08-30 11:52:48,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 206.8) internal successors, (1034), 5 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:48,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:52:48,628 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:52:48,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 11:52:48,832 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 11:52:48,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:52:48,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:52:48,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1794079151, now seen corresponding path program 2 times [2023-08-30 11:52:48,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:52:48,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232992996] [2023-08-30 11:52:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:52:48,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:52:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:52:48,949 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 11:52:48,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:52:48,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232992996] [2023-08-30 11:52:48,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232992996] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:52:48,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800136013] [2023-08-30 11:52:48,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:52:48,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:52:48,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:52:48,953 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 11:52:48,981 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 11:52:49,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:52:49,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:52:49,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:52:49,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:52:49,034 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 11:52:49,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:52:49,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800136013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:52:49,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:52:49,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:52:49,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322745210] [2023-08-30 11:52:49,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:52:49,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:52:49,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:52:49,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:52:49,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:52:49,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 490 [2023-08-30 11:52:49,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:49,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:52:49,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 490 [2023-08-30 11:52:49,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:52:55,418 INFO L130 PetriNetUnfolder]: 86906/116082 cut-off events. [2023-08-30 11:52:55,418 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2023-08-30 11:52:55,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234839 conditions, 116082 events. 86906/116082 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 5741. Compared 753367 event pairs, 76440 based on Foata normal form. 1/59143 useless extension candidates. Maximal degree in co-relation 187817. Up to 112117 conditions per place. [2023-08-30 11:52:56,052 INFO L137 encePairwiseOnDemand]: 487/490 looper letters, 51 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-08-30 11:52:56,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 328 flow [2023-08-30 11:52:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:52:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:52:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2023-08-30 11:52:56,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2023-08-30 11:52:56,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2023-08-30 11:52:56,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2023-08-30 11:52:56,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:52:56,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2023-08-30 11:52:56,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:56,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:56,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:56,059 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 224 flow. Second operand 3 states and 670 transitions. [2023-08-30 11:52:56,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 328 flow [2023-08-30 11:52:56,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 315 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:52:56,061 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 213 flow [2023-08-30 11:52:56,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2023-08-30 11:52:56,061 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-08-30 11:52:56,062 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 213 flow [2023-08-30 11:52:56,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:56,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:52:56,062 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:52:56,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 11:52:56,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:52:56,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:52:56,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:52:56,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1166701737, now seen corresponding path program 1 times [2023-08-30 11:52:56,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:52:56,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918998831] [2023-08-30 11:52:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:52:56,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:52:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:52:56,352 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 11:52:56,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:52:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918998831] [2023-08-30 11:52:56,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918998831] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:52:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172181947] [2023-08-30 11:52:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:52:56,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:52:56,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:52:56,383 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 11:52:56,384 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 11:52:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:52:56,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:52:56,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:52:56,471 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 11:52:56,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:52:56,508 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 11:52:56,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172181947] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:52:56,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:52:56,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:52:56,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978013506] [2023-08-30 11:52:56,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:52:56,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:52:56,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:52:56,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:52:56,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:52:56,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-08-30 11:52:56,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 213 flow. Second operand has 13 states, 13 states have (on average 207.15384615384616) internal successors, (2693), 13 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:56,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:52:56,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-08-30 11:52:56,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:53:11,950 INFO L130 PetriNetUnfolder]: 191192/255378 cut-off events. [2023-08-30 11:53:11,950 INFO L131 PetriNetUnfolder]: For 397/397 co-relation queries the response was YES. [2023-08-30 11:53:12,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516616 conditions, 255378 events. 191192/255378 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 8163. Compared 1739326 event pairs, 168168 based on Foata normal form. 6/130126 useless extension candidates. Maximal degree in co-relation 516512. Up to 22433 conditions per place. [2023-08-30 11:53:13,926 INFO L137 encePairwiseOnDemand]: 485/490 looper letters, 444 selfloop transitions, 31 changer transitions 0/479 dead transitions. [2023-08-30 11:53:13,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 479 transitions, 2163 flow [2023-08-30 11:53:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:53:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:53:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2953 transitions. [2023-08-30 11:53:13,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022108843537415 [2023-08-30 11:53:13,935 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2953 transitions. [2023-08-30 11:53:13,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2953 transitions. [2023-08-30 11:53:13,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:53:13,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2953 transitions. [2023-08-30 11:53:13,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 246.08333333333334) internal successors, (2953), 12 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:13,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 490.0) internal successors, (6370), 13 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:13,953 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 490.0) internal successors, (6370), 13 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:13,953 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 213 flow. Second operand 12 states and 2953 transitions. [2023-08-30 11:53:13,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 479 transitions, 2163 flow [2023-08-30 11:53:13,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 479 transitions, 2139 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:53:13,960 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 417 flow [2023-08-30 11:53:13,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=417, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-08-30 11:53:13,961 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2023-08-30 11:53:13,961 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 417 flow [2023-08-30 11:53:13,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 207.15384615384616) internal successors, (2693), 13 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:13,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:53:13,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:53:13,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:53:14,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:53:14,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:53:14,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:53:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1180376725, now seen corresponding path program 1 times [2023-08-30 11:53:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:53:14,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112247571] [2023-08-30 11:53:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:53:14,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:53:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:53:14,222 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 11:53:14,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:53:14,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112247571] [2023-08-30 11:53:14,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112247571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:53:14,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:53:14,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:53:14,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106757216] [2023-08-30 11:53:14,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:53:14,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:53:14,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:53:14,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:53:14,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:53:14,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 490 [2023-08-30 11:53:14,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 207.75) internal successors, (831), 4 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:14,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:53:14,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 490 [2023-08-30 11:53:14,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:53:29,556 INFO L130 PetriNetUnfolder]: 154188/208672 cut-off events. [2023-08-30 11:53:29,556 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-30 11:53:30,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428898 conditions, 208672 events. 154188/208672 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 5553. Compared 1476446 event pairs, 15015 based on Foata normal form. 0/110310 useless extension candidates. Maximal degree in co-relation 350885. Up to 184602 conditions per place. [2023-08-30 11:53:30,823 INFO L137 encePairwiseOnDemand]: 486/490 looper letters, 99 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-30 11:53:30,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 103 transitions, 671 flow [2023-08-30 11:53:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:53:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:53:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 898 transitions. [2023-08-30 11:53:30,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45816326530612245 [2023-08-30 11:53:30,845 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 898 transitions. [2023-08-30 11:53:30,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 898 transitions. [2023-08-30 11:53:30,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:53:30,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 898 transitions. [2023-08-30 11:53:30,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.5) internal successors, (898), 4 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:30,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:30,851 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:30,851 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 417 flow. Second operand 4 states and 898 transitions. [2023-08-30 11:53:30,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 103 transitions, 671 flow [2023-08-30 11:53:30,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 103 transitions, 581 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 11:53:30,855 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 327 flow [2023-08-30 11:53:30,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2023-08-30 11:53:30,856 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2023-08-30 11:53:30,856 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 327 flow [2023-08-30 11:53:30,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.75) internal successors, (831), 4 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:30,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:53:30,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:53:30,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:53:30,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:53:30,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:53:30,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1180376607, now seen corresponding path program 1 times [2023-08-30 11:53:30,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:53:30,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158285525] [2023-08-30 11:53:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:53:30,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:53:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:53:30,927 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 11:53:30,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:53:30,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158285525] [2023-08-30 11:53:30,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158285525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:53:30,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:53:30,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:53:30,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907798522] [2023-08-30 11:53:30,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:53:30,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:53:30,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:53:30,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:53:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:53:30,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 490 [2023-08-30 11:53:30,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:30,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:53:30,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 490 [2023-08-30 11:53:30,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:53:44,764 INFO L130 PetriNetUnfolder]: 133970/182856 cut-off events. [2023-08-30 11:53:44,764 INFO L131 PetriNetUnfolder]: For 388/388 co-relation queries the response was YES. [2023-08-30 11:53:45,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373185 conditions, 182856 events. 133970/182856 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 6049. Compared 1278815 event pairs, 116677 based on Foata normal form. 1672/110399 useless extension candidates. Maximal degree in co-relation 305292. Up to 156069 conditions per place. [2023-08-30 11:53:46,122 INFO L137 encePairwiseOnDemand]: 482/490 looper letters, 109 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 11:53:46,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 116 transitions, 701 flow [2023-08-30 11:53:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:53:46,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:53:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 887 transitions. [2023-08-30 11:53:46,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45255102040816325 [2023-08-30 11:53:46,125 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 887 transitions. [2023-08-30 11:53:46,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 887 transitions. [2023-08-30 11:53:46,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:53:46,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 887 transitions. [2023-08-30 11:53:46,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 221.75) internal successors, (887), 4 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:46,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:46,131 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 490.0) internal successors, (2450), 5 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:46,131 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 327 flow. Second operand 4 states and 887 transitions. [2023-08-30 11:53:46,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 116 transitions, 701 flow [2023-08-30 11:53:46,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 116 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:53:46,135 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 341 flow [2023-08-30 11:53:46,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2023-08-30 11:53:46,136 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-08-30 11:53:46,136 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 341 flow [2023-08-30 11:53:46,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:46,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:53:46,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:53:46,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:53:46,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:53:46,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:53:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash -865880660, now seen corresponding path program 1 times [2023-08-30 11:53:46,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:53:46,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923904437] [2023-08-30 11:53:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:53:46,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:53:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:53:46,222 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 11:53:46,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:53:46,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923904437] [2023-08-30 11:53:46,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923904437] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:53:46,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033254101] [2023-08-30 11:53:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:53:46,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:53:46,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:53:46,225 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 11:53:46,227 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 11:53:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:53:46,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:53:46,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:53:46,326 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 11:53:46,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:53:46,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033254101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:53:46,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:53:46,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:53:46,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956509798] [2023-08-30 11:53:46,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:53:46,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:53:46,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:53:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:53:46,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:53:46,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 490 [2023-08-30 11:53:46,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:46,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:53:46,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 490 [2023-08-30 11:53:46,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:53:58,423 INFO L130 PetriNetUnfolder]: 107196/146556 cut-off events. [2023-08-30 11:53:58,423 INFO L131 PetriNetUnfolder]: For 8869/8869 co-relation queries the response was YES. [2023-08-30 11:53:58,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313007 conditions, 146556 events. 107196/146556 cut-off events. For 8869/8869 co-relation queries the response was YES. Maximal size of possible extension queue 5140. Compared 1011959 event pairs, 91927 based on Foata normal form. 0/94581 useless extension candidates. Maximal degree in co-relation 270473. Up to 141012 conditions per place. [2023-08-30 11:53:59,514 INFO L137 encePairwiseOnDemand]: 487/490 looper letters, 70 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-08-30 11:53:59,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 475 flow [2023-08-30 11:53:59,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:53:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:53:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-30 11:53:59,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45782312925170066 [2023-08-30 11:53:59,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-30 11:53:59,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-30 11:53:59,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:53:59,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-30 11:53:59,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:59,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:59,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:59,522 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 341 flow. Second operand 3 states and 673 transitions. [2023-08-30 11:53:59,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 475 flow [2023-08-30 11:53:59,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 469 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:53:59,540 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 329 flow [2023-08-30 11:53:59,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=490, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2023-08-30 11:53:59,541 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 10 predicate places. [2023-08-30 11:53:59,541 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 329 flow [2023-08-30 11:53:59,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:59,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:53:59,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:53:59,551 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 11:53:59,750 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 11:53:59,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 11:53:59,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:53:59,751 INFO L85 PathProgramCache]: Analyzing trace with hash -865880544, now seen corresponding path program 1 times [2023-08-30 11:53:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:53:59,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193632241] [2023-08-30 11:53:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:53:59,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:53:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:53:59,784 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 11:53:59,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:53:59,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193632241] [2023-08-30 11:53:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193632241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:53:59,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:53:59,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:53:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265134085] [2023-08-30 11:53:59,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:53:59,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:53:59,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:53:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:53:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:53:59,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 490 [2023-08-30 11:53:59,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:59,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:53:59,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 490 [2023-08-30 11:53:59,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:54:08,863 INFO L130 PetriNetUnfolder]: 89310/124369 cut-off events. [2023-08-30 11:54:08,863 INFO L131 PetriNetUnfolder]: For 2887/2887 co-relation queries the response was YES.