./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.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-bad-buffer-mult-alt2.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 c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 --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 11:26:06,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:26:06,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:26:06,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:26:06,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:26:06,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:26:06,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:26:06,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:26:06,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:26:06,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:26:06,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:26:06,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:26:06,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:26:06,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:26:06,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:26:06,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:26:06,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:26:06,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:26:06,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:26:06,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:26:06,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:26:06,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:26:06,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:26:06,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:26:06,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:26:06,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:26:06,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:26:06,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:26:06,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:26:06,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:26:06,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:26:06,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:26:06,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:26:06,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:26:06,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:26:06,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:26:06,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:26:06,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:26:06,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:26:06,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:26:06,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:26:06,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:26:06,273 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:26:06,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:26:06,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:26:06,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:26:06,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:26:06,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:26:06,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:26:06,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:26:06,276 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:26:06,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:26:06,277 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:26:06,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:26:06,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:26:06,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:26:06,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:26:06,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:26:06,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:26:06,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:26:06,279 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:26:06,279 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:26:06,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:26:06,279 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:26:06,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:26:06,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:26:06,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:26:06,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:26:06,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:26:06,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:26:06,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:26:06,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:26:06,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:26:06,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:26:06,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:26:06,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:26:06,282 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:26:06,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:26:06,282 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:26:06,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:26:06,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:26:06,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:26:06,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:26:06,600 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:26:06,601 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:26:06,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-08-30 11:26:07,676 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:26:07,885 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:26:07,885 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-08-30 11:26:07,891 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8b4bd57c/6376174ff5f04febb1d5fc34dde05f61/FLAG7d88bfad0 [2023-08-30 11:26:07,902 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8b4bd57c/6376174ff5f04febb1d5fc34dde05f61 [2023-08-30 11:26:07,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:26:07,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:26:07,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:26:07,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:26:07,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:26:07,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:26:07" (1/1) ... [2023-08-30 11:26:07,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f25396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:07, skipping insertion in model container [2023-08-30 11:26:07,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:26:07" (1/1) ... [2023-08-30 11:26:07,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:26:07,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:26:08,114 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-bad-buffer-mult-alt2.wvr.c[4174,4187] [2023-08-30 11:26:08,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:26:08,142 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:26:08,182 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-bad-buffer-mult-alt2.wvr.c[4174,4187] [2023-08-30 11:26:08,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:26:08,210 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:26:08,210 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:26:08,221 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:26:08,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08 WrapperNode [2023-08-30 11:26:08,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:26:08,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:26:08,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:26:08,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:26:08,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,282 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 372 [2023-08-30 11:26:08,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:26:08,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:26:08,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:26:08,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:26:08,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:26:08,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:26:08,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:26:08,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:26:08,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (1/1) ... [2023-08-30 11:26:08,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:26:08,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:26:08,417 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 11:26:08,430 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 11:26:08,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:26:08,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:26:08,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:26:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:26:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:26:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:26:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:26:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:26:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:26:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:26:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:26:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:26:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:26:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:26:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:26:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:26:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:26:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:26:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:26:08,464 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 11:26:08,633 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:26:08,635 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:26:09,051 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:26:09,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:26:09,656 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:26:09,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:26:09 BoogieIcfgContainer [2023-08-30 11:26:09,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:26:09,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:26:09,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:26:09,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:26:09,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:26:07" (1/3) ... [2023-08-30 11:26:09,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121c2990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:26:09, skipping insertion in model container [2023-08-30 11:26:09,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:26:08" (2/3) ... [2023-08-30 11:26:09,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121c2990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:26:09, skipping insertion in model container [2023-08-30 11:26:09,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:26:09" (3/3) ... [2023-08-30 11:26:09,667 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2023-08-30 11:26:09,673 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:26:09,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:26:09,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 11:26:09,681 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:26:09,894 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 11:26:09,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 269 transitions, 570 flow [2023-08-30 11:26:10,091 INFO L130 PetriNetUnfolder]: 19/265 cut-off events. [2023-08-30 11:26:10,092 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:26:10,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 265 events. 19/265 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 222. Up to 2 conditions per place. [2023-08-30 11:26:10,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 269 transitions, 570 flow [2023-08-30 11:26:10,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 245 transitions, 511 flow [2023-08-30 11:26:10,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:26:10,132 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 245 transitions, 511 flow [2023-08-30 11:26:10,135 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 245 transitions, 511 flow [2023-08-30 11:26:10,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 245 transitions, 511 flow [2023-08-30 11:26:10,195 INFO L130 PetriNetUnfolder]: 18/245 cut-off events. [2023-08-30 11:26:10,196 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:26:10,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 245 events. 18/245 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 222. Up to 2 conditions per place. [2023-08-30 11:26:10,201 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-08-30 11:26:24,473 INFO L134 LiptonReduction]: Checked pairs total: 7140 [2023-08-30 11:26:24,473 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-08-30 11:26:24,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:26:24,489 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;@1859347e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:26:24,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-30 11:26:24,491 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:26:24,492 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:26:24,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:26:24,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:26:24,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:26:24,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:26:24,496 INFO L85 PathProgramCache]: Analyzing trace with hash 45269, now seen corresponding path program 1 times [2023-08-30 11:26:24,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:26:24,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463504597] [2023-08-30 11:26:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:24,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:26:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:26:24,778 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 11:26:24,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:26:24,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463504597] [2023-08-30 11:26:24,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463504597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:26:24,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:26:24,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:26:24,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375376834] [2023-08-30 11:26:24,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:26:24,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:26:24,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:26:24,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:26:24,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:26:24,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 515 [2023-08-30 11:26:24,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 11:26:24,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:26:24,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 515 [2023-08-30 11:26:24,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:26:33,653 INFO L130 PetriNetUnfolder]: 73043/90293 cut-off events. [2023-08-30 11:26:33,653 INFO L131 PetriNetUnfolder]: For 1182/1182 co-relation queries the response was YES. [2023-08-30 11:26:33,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181775 conditions, 90293 events. 73043/90293 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 7849. Compared 511281 event pairs, 46499 based on Foata normal form. 0/24442 useless extension candidates. Maximal degree in co-relation 80316. Up to 44280 conditions per place. [2023-08-30 11:26:34,269 INFO L137 encePairwiseOnDemand]: 499/515 looper letters, 89 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-30 11:26:34,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2023-08-30 11:26:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:26:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:26:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-08-30 11:26:34,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48284789644012943 [2023-08-30 11:26:34,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-08-30 11:26:34,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-08-30 11:26:34,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:26:34,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-08-30 11:26:34,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 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 11:26:34,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 11:26:34,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 11:26:34,299 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 147 flow. Second operand 3 states and 746 transitions. [2023-08-30 11:26:34,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2023-08-30 11:26:34,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 11:26:34,881 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 154 flow [2023-08-30 11:26:34,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-08-30 11:26:34,885 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-08-30 11:26:34,885 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 154 flow [2023-08-30 11:26:34,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 11:26:34,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:26:34,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:26:34,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:26:34,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:26:34,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:26:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1405146, now seen corresponding path program 1 times [2023-08-30 11:26:34,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:26:34,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219586489] [2023-08-30 11:26:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:34,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:26:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:26:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:26:34,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:26:34,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219586489] [2023-08-30 11:26:34,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219586489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:26:34,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:26:34,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:26:34,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247056318] [2023-08-30 11:26:34,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:26:34,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:26:34,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:26:34,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:26:34,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:26:35,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 515 [2023-08-30 11:26:35,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 11:26:35,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:26:35,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 515 [2023-08-30 11:26:35,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:26:42,333 INFO L130 PetriNetUnfolder]: 73055/90303 cut-off events. [2023-08-30 11:26:42,333 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:26:42,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180529 conditions, 90303 events. 73055/90303 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7849. Compared 511586 event pairs, 46500 based on Foata normal form. 0/24399 useless extension candidates. Maximal degree in co-relation 90253. Up to 88563 conditions per place. [2023-08-30 11:26:42,782 INFO L137 encePairwiseOnDemand]: 512/515 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 11:26:42,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 246 flow [2023-08-30 11:26:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:26:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:26:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2023-08-30 11:26:42,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414239482200647 [2023-08-30 11:26:42,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2023-08-30 11:26:42,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2023-08-30 11:26:42,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:26:42,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2023-08-30 11:26:42,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 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 11:26:42,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 11:26:42,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 11:26:42,791 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 154 flow. Second operand 3 states and 682 transitions. [2023-08-30 11:26:42,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 246 flow [2023-08-30 11:26:42,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:26:42,793 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 140 flow [2023-08-30 11:26:42,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-08-30 11:26:42,794 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-08-30 11:26:42,794 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 140 flow [2023-08-30 11:26:42,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 11:26:42,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:26:42,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:26:42,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:26:42,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:26:42,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:26:42,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1405147, now seen corresponding path program 1 times [2023-08-30 11:26:42,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:26:42,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801575485] [2023-08-30 11:26:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:42,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:26:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:26:42,848 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 11:26:42,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:26:42,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801575485] [2023-08-30 11:26:42,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801575485] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:26:42,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949562119] [2023-08-30 11:26:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:42,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:26:42,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:26:42,852 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 11:26:42,861 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 11:26:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:26:43,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:26:43,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:26:43,065 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 11:26:43,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:26:43,079 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 11:26:43,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949562119] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:26:43,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:26:43,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:26:43,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527162548] [2023-08-30 11:26:43,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:26:43,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:26:43,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:26:43,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:26:43,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:26:43,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 515 [2023-08-30 11:26:43,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 212.14285714285714) internal successors, (1485), 7 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 11:26:43,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:26:43,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 515 [2023-08-30 11:26:43,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:00,766 INFO L130 PetriNetUnfolder]: 182588/225705 cut-off events. [2023-08-30 11:27:00,767 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:27:01,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451194 conditions, 225705 events. 182588/225705 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15676. Compared 1376380 event pairs, 116246 based on Foata normal form. 0/61179 useless extension candidates. Maximal degree in co-relation 451186. Up to 44283 conditions per place. [2023-08-30 11:27:01,820 INFO L137 encePairwiseOnDemand]: 509/515 looper letters, 210 selfloop transitions, 13 changer transitions 0/229 dead transitions. [2023-08-30 11:27:01,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 229 transitions, 982 flow [2023-08-30 11:27:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:27:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:27:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1495 transitions. [2023-08-30 11:27:01,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48381877022653724 [2023-08-30 11:27:01,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1495 transitions. [2023-08-30 11:27:01,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1495 transitions. [2023-08-30 11:27:01,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:01,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1495 transitions. [2023-08-30 11:27:01,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.16666666666666) internal successors, (1495), 6 states have internal predecessors, (1495), 0 states have call successors, (0), 0 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 11:27:01,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 515.0) internal successors, (3605), 7 states have internal predecessors, (3605), 0 states have call successors, (0), 0 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 11:27:01,836 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 515.0) internal successors, (3605), 7 states have internal predecessors, (3605), 0 states have call successors, (0), 0 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 11:27:01,836 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 140 flow. Second operand 6 states and 1495 transitions. [2023-08-30 11:27:01,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 229 transitions, 982 flow [2023-08-30 11:27:01,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 229 transitions, 981 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:27:01,840 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 232 flow [2023-08-30 11:27:01,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-08-30 11:27:01,841 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-08-30 11:27:01,841 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 232 flow [2023-08-30 11:27:01,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.14285714285714) internal successors, (1485), 7 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 11:27:01,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:01,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:27:01,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:27:02,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:02,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:02,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1060974717, now seen corresponding path program 1 times [2023-08-30 11:27:02,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:02,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405095239] [2023-08-30 11:27:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:02,164 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 11:27:02,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:02,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405095239] [2023-08-30 11:27:02,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405095239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:02,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:02,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:27:02,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838804679] [2023-08-30 11:27:02,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:02,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:02,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:27:02,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 515 [2023-08-30 11:27:02,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 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 11:27:02,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:02,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 515 [2023-08-30 11:27:02,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:25,333 INFO L130 PetriNetUnfolder]: 223431/283013 cut-off events. [2023-08-30 11:27:25,333 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:27:25,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569387 conditions, 283013 events. 223431/283013 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 21055. Compared 1937459 event pairs, 62540 based on Foata normal form. 0/79766 useless extension candidates. Maximal degree in co-relation 569375. Up to 175196 conditions per place. [2023-08-30 11:27:26,712 INFO L137 encePairwiseOnDemand]: 511/515 looper letters, 94 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-30 11:27:26,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 505 flow [2023-08-30 11:27:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:27:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:27:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2023-08-30 11:27:26,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47508090614886733 [2023-08-30 11:27:26,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2023-08-30 11:27:26,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2023-08-30 11:27:26,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:26,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2023-08-30 11:27:26,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 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 11:27:26,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 11:27:26,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 11:27:26,721 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 232 flow. Second operand 3 states and 734 transitions. [2023-08-30 11:27:26,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 505 flow [2023-08-30 11:27:26,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 486 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:27:26,728 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 227 flow [2023-08-30 11:27:26,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-30 11:27:26,730 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-30 11:27:26,730 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 227 flow [2023-08-30 11:27:26,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 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 11:27:26,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:26,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:27:26,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:27:26,731 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:26,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:26,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1060974719, now seen corresponding path program 1 times [2023-08-30 11:27:26,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:26,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822529726] [2023-08-30 11:27:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:26,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:26,874 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 11:27:26,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822529726] [2023-08-30 11:27:26,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822529726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:26,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:27:26,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:27:26,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335411409] [2023-08-30 11:27:26,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:26,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:27:26,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:26,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:27:26,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:27:26,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 515 [2023-08-30 11:27:26,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 208.25) internal successors, (833), 4 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 11:27:26,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:26,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 515 [2023-08-30 11:27:26,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:52,068 INFO L130 PetriNetUnfolder]: 238731/304949 cut-off events. [2023-08-30 11:27:52,068 INFO L131 PetriNetUnfolder]: For 13219/13219 co-relation queries the response was YES. [2023-08-30 11:27:52,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638875 conditions, 304949 events. 238731/304949 cut-off events. For 13219/13219 co-relation queries the response was YES. Maximal size of possible extension queue 21685. Compared 2131972 event pairs, 176460 based on Foata normal form. 1520/105583 useless extension candidates. Maximal degree in co-relation 638861. Up to 280687 conditions per place. [2023-08-30 11:27:53,649 INFO L137 encePairwiseOnDemand]: 504/515 looper letters, 94 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2023-08-30 11:27:53,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 103 transitions, 530 flow [2023-08-30 11:27:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:27:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:27:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 918 transitions. [2023-08-30 11:27:53,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44563106796116503 [2023-08-30 11:27:53,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 918 transitions. [2023-08-30 11:27:53,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 918 transitions. [2023-08-30 11:27:53,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:53,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 918 transitions. [2023-08-30 11:27:53,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 11:27:53,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 515.0) internal successors, (2575), 5 states have internal predecessors, (2575), 0 states have call successors, (0), 0 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 11:27:53,659 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 515.0) internal successors, (2575), 5 states have internal predecessors, (2575), 0 states have call successors, (0), 0 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 11:27:53,659 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 227 flow. Second operand 4 states and 918 transitions. [2023-08-30 11:27:53,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 103 transitions, 530 flow [2023-08-30 11:27:53,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 103 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:27:53,670 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 248 flow [2023-08-30 11:27:53,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2023-08-30 11:27:53,671 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-08-30 11:27:53,671 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 248 flow [2023-08-30 11:27:53,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.25) internal successors, (833), 4 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 11:27:53,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:53,672 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:27:53,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:27:53,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:53,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1087174122, now seen corresponding path program 2 times [2023-08-30 11:27:53,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:53,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071599671] [2023-08-30 11:27:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:53,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:53,753 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 11:27:53,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:53,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071599671] [2023-08-30 11:27:53,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071599671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:27:53,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595749795] [2023-08-30 11:27:53,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:27:53,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:53,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:53,756 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 11:27:53,758 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 11:27:53,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:27:53,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:27:53,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:27:53,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:27:53,919 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 11:27:53,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:27:53,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595749795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:27:53,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:27:53,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:27:53,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887119728] [2023-08-30 11:27:53,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:27:53,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:27:53,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:53,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:27:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:27:53,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 515 [2023-08-30 11:27:53,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 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 11:27:53,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:53,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 515 [2023-08-30 11:27:53,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:28:19,496 INFO L130 PetriNetUnfolder]: 238721/304858 cut-off events. [2023-08-30 11:28:19,496 INFO L131 PetriNetUnfolder]: For 41309/41309 co-relation queries the response was YES. [2023-08-30 11:28:20,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693753 conditions, 304858 events. 238721/304858 cut-off events. For 41309/41309 co-relation queries the response was YES. Maximal size of possible extension queue 21482. Compared 2130980 event pairs, 176470 based on Foata normal form. 1/122143 useless extension candidates. Maximal degree in co-relation 693737. Up to 298813 conditions per place. [2023-08-30 11:28:21,203 INFO L137 encePairwiseOnDemand]: 512/515 looper letters, 53 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2023-08-30 11:28:21,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 356 flow [2023-08-30 11:28:21,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:28:21,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:28:21,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 686 transitions. [2023-08-30 11:28:21,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44401294498381877 [2023-08-30 11:28:21,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 686 transitions. [2023-08-30 11:28:21,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 686 transitions. [2023-08-30 11:28:21,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:28:21,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 686 transitions. [2023-08-30 11:28:21,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 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 11:28:21,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 11:28:21,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 11:28:21,210 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 248 flow. Second operand 3 states and 686 transitions. [2023-08-30 11:28:21,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 356 flow [2023-08-30 11:28:21,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 65 transitions, 350 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:28:21,227 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 244 flow [2023-08-30 11:28:21,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2023-08-30 11:28:21,228 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-08-30 11:28:21,228 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 244 flow [2023-08-30 11:28:21,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 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 11:28:21,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:28:21,228 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:28:21,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:28:21,433 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,SelfDestructingSolverStorable5 [2023-08-30 11:28:21,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:28:21,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:28:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1466593027, now seen corresponding path program 1 times [2023-08-30 11:28:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:28:21,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802860437] [2023-08-30 11:28:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:28:21,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:28:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:28:21,537 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 11:28:21,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:28:21,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802860437] [2023-08-30 11:28:21,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802860437] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:28:21,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320787311] [2023-08-30 11:28:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:28:21,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:28:21,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:28:21,541 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 11:28:21,545 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 11:28:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:28:21,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:28:21,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:28:21,731 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 11:28:21,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:28:21,779 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 11:28:21,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320787311] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:28:21,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:28:21,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:28:21,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618180454] [2023-08-30 11:28:21,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:28:21,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:28:21,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:28:21,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:28:21,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:28:21,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 515 [2023-08-30 11:28:21,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 244 flow. Second operand has 13 states, 13 states have (on average 212.15384615384616) internal successors, (2758), 13 states have internal predecessors, (2758), 0 states have call successors, (0), 0 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 11:28:21,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:28:21,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 515 [2023-08-30 11:28:21,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand