./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-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 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:13:55,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:13:55,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:13:55,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:13:55,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:13:55,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:13:55,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:13:55,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:13:55,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:13:55,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:13:55,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:13:55,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:13:55,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:13:55,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:13:55,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:13:55,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:13:55,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:13:55,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:13:55,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:13:55,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:13:55,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:13:55,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:13:55,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:13:55,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:13:55,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:13:55,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:13:55,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:13:55,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:13:55,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:13:55,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:13:55,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:13:55,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:13:55,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:13:55,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:13:55,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:13:55,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:13:55,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:13:55,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:13:55,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:13:55,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:13:55,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:13:55,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:13:55,492 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:13:55,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:13:55,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:13:55,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:13:55,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:13:55,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:13:55,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:13:55,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:13:55,495 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:13:55,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:13:55,496 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:13:55,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:13:55,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:13:55,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:13:55,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:13:55,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:13:55,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:13:55,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:13:55,497 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:13:55,497 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:13:55,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:13:55,497 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:13:55,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:13:55,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:13:55,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:13:55,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:13:55,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:13:55,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:13:55,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:13:55,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:13:55,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:13:55,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:13:55,499 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:13:55,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:13:55,500 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:13:55,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:13:55,500 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:13:55,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:13:55,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:13:55,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:13:55,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:13:55,753 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:13:55,753 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:13:55,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2023-09-01 08:13:56,757 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:13:56,922 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:13:56,923 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2023-09-01 08:13:56,929 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58255bed4/82da0760260144428722a86bb7bb2ed5/FLAG6d3492a2f [2023-09-01 08:13:56,948 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58255bed4/82da0760260144428722a86bb7bb2ed5 [2023-09-01 08:13:56,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:13:56,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:13:56,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:13:56,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:13:56,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:13:56,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:13:56" (1/1) ... [2023-09-01 08:13:56,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392aa993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:56, skipping insertion in model container [2023-09-01 08:13:56,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:13:56" (1/1) ... [2023-09-01 08:13:56,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:13:56,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:13:57,083 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c[2525,2538] [2023-09-01 08:13:57,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:13:57,094 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:13:57,117 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c[2525,2538] [2023-09-01 08:13:57,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:13:57,125 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:13:57,126 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:13:57,130 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:13:57,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57 WrapperNode [2023-09-01 08:13:57,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:13:57,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:13:57,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:13:57,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:13:57,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,160 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 244 [2023-09-01 08:13:57,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:13:57,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:13:57,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:13:57,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:13:57,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:13:57,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:13:57,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:13:57,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:13:57,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (1/1) ... [2023-09-01 08:13:57,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:13:57,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:13:57,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:13:57,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:13:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:13:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:13:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:13:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:13:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:13:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:13:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:13:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:13:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:13:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:13:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:13:57,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:13:57,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:13:57,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:13:57,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:13:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:13:57,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:13:57,240 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:13:57,337 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:13:57,339 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:13:57,718 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:13:58,089 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:13:58,090 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:13:58,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:13:58 BoogieIcfgContainer [2023-09-01 08:13:58,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:13:58,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:13:58,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:13:58,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:13:58,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:13:56" (1/3) ... [2023-09-01 08:13:58,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d002aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:13:58, skipping insertion in model container [2023-09-01 08:13:58,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:13:57" (2/3) ... [2023-09-01 08:13:58,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d002aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:13:58, skipping insertion in model container [2023-09-01 08:13:58,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:13:58" (3/3) ... [2023-09-01 08:13:58,100 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2023-09-01 08:13:58,107 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:13:58,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:13:58,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-09-01 08:13:58,116 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:13:58,317 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:13:58,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 176 transitions, 376 flow [2023-09-01 08:13:58,426 INFO L130 PetriNetUnfolder]: 12/173 cut-off events. [2023-09-01 08:13:58,426 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:13:58,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 173 events. 12/173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-09-01 08:13:58,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 176 transitions, 376 flow [2023-09-01 08:13:58,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 155 transitions, 325 flow [2023-09-01 08:13:58,440 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:13:58,456 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 155 transitions, 325 flow [2023-09-01 08:13:58,460 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 155 transitions, 325 flow [2023-09-01 08:13:58,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 155 transitions, 325 flow [2023-09-01 08:13:58,501 INFO L130 PetriNetUnfolder]: 11/155 cut-off events. [2023-09-01 08:13:58,502 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:13:58,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 155 events. 11/155 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-09-01 08:13:58,506 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-09-01 08:14:12,088 INFO L134 LiptonReduction]: Checked pairs total: 5038 [2023-09-01 08:14:12,088 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-09-01 08:14:12,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:14:12,101 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;@55c67ce9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:14:12,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-09-01 08:14:12,103 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:14:12,103 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:14:12,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:12,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:14:12,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:12,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:12,112 INFO L85 PathProgramCache]: Analyzing trace with hash 32650, now seen corresponding path program 1 times [2023-09-01 08:14:12,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:12,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353984266] [2023-09-01 08:14:12,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:12,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:12,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:12,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353984266] [2023-09-01 08:14:12,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353984266] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:14:12,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:14:12,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:14:12,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323706223] [2023-09-01 08:14:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:14:12,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:14:12,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:14:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:14:12,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 334 [2023-09-01 08:14:12,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:12,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:12,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 334 [2023-09-01 08:14:12,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:14,830 INFO L130 PetriNetUnfolder]: 14481/18123 cut-off events. [2023-09-01 08:14:14,832 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2023-09-01 08:14:14,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36614 conditions, 18123 events. 14481/18123 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 2048. Compared 91034 event pairs, 7051 based on Foata normal form. 0/4174 useless extension candidates. Maximal degree in co-relation 16644. Up to 8978 conditions per place. [2023-09-01 08:14:14,942 INFO L137 encePairwiseOnDemand]: 324/334 looper letters, 73 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-09-01 08:14:14,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 336 flow [2023-09-01 08:14:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:14:14,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:14:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-09-01 08:14:14,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.499001996007984 [2023-09-01 08:14:14,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-09-01 08:14:14,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-09-01 08:14:14,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:14,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-09-01 08:14:14,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:14,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:14,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:14,964 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 500 transitions. [2023-09-01 08:14:14,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 336 flow [2023-09-01 08:14:15,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 78 transitions, 318 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:14:15,006 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 104 flow [2023-09-01 08:14:15,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-09-01 08:14:15,010 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-09-01 08:14:15,010 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 104 flow [2023-09-01 08:14:15,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:15,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:15,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:14:15,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:14:15,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:15,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1013335, now seen corresponding path program 1 times [2023-09-01 08:14:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:15,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826849275] [2023-09-01 08:14:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:15,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:15,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:15,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826849275] [2023-09-01 08:14:15,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826849275] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:14:15,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371345596] [2023-09-01 08:14:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:15,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:15,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:14:15,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:14:15,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:14:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:15,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:14:15,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:14:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:15,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:14:15,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371345596] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:14:15,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:14:15,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:14:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644740763] [2023-09-01 08:14:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:14:15,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:14:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:14:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:14:15,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 334 [2023-09-01 08:14:15,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:15,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:15,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 334 [2023-09-01 08:14:15,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:17,272 INFO L130 PetriNetUnfolder]: 14481/18122 cut-off events. [2023-09-01 08:14:17,272 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 08:14:17,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36416 conditions, 18122 events. 14481/18122 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 91355 event pairs, 7051 based on Foata normal form. 0/4176 useless extension candidates. Maximal degree in co-relation 18216. Up to 8978 conditions per place. [2023-09-01 08:14:17,342 INFO L137 encePairwiseOnDemand]: 331/334 looper letters, 72 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-09-01 08:14:17,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 324 flow [2023-09-01 08:14:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:14:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:14:17,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-09-01 08:14:17,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663173652694611 [2023-09-01 08:14:17,345 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-09-01 08:14:17,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-09-01 08:14:17,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:17,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-09-01 08:14:17,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:17,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 334.0) internal successors, (1670), 5 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:17,351 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 334.0) internal successors, (1670), 5 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:17,351 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 104 flow. Second operand 4 states and 623 transitions. [2023-09-01 08:14:17,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 324 flow [2023-09-01 08:14:17,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 77 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:14:17,353 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 102 flow [2023-09-01 08:14:17,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-09-01 08:14:17,354 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-09-01 08:14:17,354 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 102 flow [2023-09-01 08:14:17,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:17,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:17,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:14:17,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 08:14:17,560 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 [2023-09-01 08:14:17,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:17,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:17,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1013334, now seen corresponding path program 1 times [2023-09-01 08:14:17,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:17,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339964179] [2023-09-01 08:14:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:17,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:17,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:17,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339964179] [2023-09-01 08:14:17,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339964179] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:14:17,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386006207] [2023-09-01 08:14:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:17,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:17,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:14:17,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:14:17,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:14:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:17,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:14:17,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:14:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:17,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:14:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:17,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386006207] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:14:17,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:14:17,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:14:17,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097760111] [2023-09-01 08:14:17,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:14:17,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:14:17,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:17,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:14:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:14:17,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 334 [2023-09-01 08:14:17,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:17,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:17,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 334 [2023-09-01 08:14:17,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:22,745 INFO L130 PetriNetUnfolder]: 36177/45278 cut-off events. [2023-09-01 08:14:22,745 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 08:14:22,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90975 conditions, 45278 events. 36177/45278 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 3779. Compared 247075 event pairs, 17626 based on Foata normal form. 0/10437 useless extension candidates. Maximal degree in co-relation 72747. Up to 8978 conditions per place. [2023-09-01 08:14:22,956 INFO L137 encePairwiseOnDemand]: 331/334 looper letters, 177 selfloop transitions, 5 changer transitions 0/185 dead transitions. [2023-09-01 08:14:22,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 185 transitions, 782 flow [2023-09-01 08:14:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:14:22,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:14:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1007 transitions. [2023-09-01 08:14:22,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024950099800399 [2023-09-01 08:14:22,960 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1007 transitions. [2023-09-01 08:14:22,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1007 transitions. [2023-09-01 08:14:22,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:22,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1007 transitions. [2023-09-01 08:14:22,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:22,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 334.0) internal successors, (2338), 7 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:22,965 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 334.0) internal successors, (2338), 7 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:22,966 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 102 flow. Second operand 6 states and 1007 transitions. [2023-09-01 08:14:22,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 185 transitions, 782 flow [2023-09-01 08:14:22,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 185 transitions, 779 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:14:22,969 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 135 flow [2023-09-01 08:14:22,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-09-01 08:14:22,972 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-09-01 08:14:22,972 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 135 flow [2023-09-01 08:14:22,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:22,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:22,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:14:22,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:14:23,178 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 [2023-09-01 08:14:23,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:23,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:23,179 INFO L85 PathProgramCache]: Analyzing trace with hash 974123998, now seen corresponding path program 1 times [2023-09-01 08:14:23,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:23,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873145326] [2023-09-01 08:14:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:23,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:23,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873145326] [2023-09-01 08:14:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873145326] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:14:23,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:14:23,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:14:23,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489883561] [2023-09-01 08:14:23,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:14:23,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:14:23,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:23,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:14:23,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:14:23,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 334 [2023-09-01 08:14:23,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:23,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:23,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 334 [2023-09-01 08:14:23,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:26,705 INFO L130 PetriNetUnfolder]: 26541/34476 cut-off events. [2023-09-01 08:14:26,705 INFO L131 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2023-09-01 08:14:26,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69383 conditions, 34476 events. 26541/34476 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 3458. Compared 205340 event pairs, 14963 based on Foata normal form. 0/9387 useless extension candidates. Maximal degree in co-relation 63669. Up to 31319 conditions per place. [2023-09-01 08:14:26,850 INFO L137 encePairwiseOnDemand]: 322/334 looper letters, 87 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2023-09-01 08:14:26,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 93 transitions, 422 flow [2023-09-01 08:14:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:14:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:14:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2023-09-01 08:14:26,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502994011976048 [2023-09-01 08:14:26,852 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2023-09-01 08:14:26,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2023-09-01 08:14:26,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:26,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2023-09-01 08:14:26,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:26,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:26,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:26,857 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 135 flow. Second operand 5 states and 752 transitions. [2023-09-01 08:14:26,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 93 transitions, 422 flow [2023-09-01 08:14:26,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 414 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:14:26,860 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 167 flow [2023-09-01 08:14:26,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-09-01 08:14:26,861 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-09-01 08:14:26,862 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 167 flow [2023-09-01 08:14:26,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:26,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:26,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:14:26,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:14:26,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:26,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:26,863 INFO L85 PathProgramCache]: Analyzing trace with hash 124939822, now seen corresponding path program 1 times [2023-09-01 08:14:26,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:26,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148239561] [2023-09-01 08:14:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:26,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:14:26,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:26,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148239561] [2023-09-01 08:14:26,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148239561] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:14:26,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:14:26,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:14:26,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213532215] [2023-09-01 08:14:26,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:14:26,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:14:26,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:14:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:14:26,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 334 [2023-09-01 08:14:26,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:26,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:26,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 334 [2023-09-01 08:14:26,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:32,602 INFO L130 PetriNetUnfolder]: 48517/61540 cut-off events. [2023-09-01 08:14:32,603 INFO L131 PetriNetUnfolder]: For 6444/8262 co-relation queries the response was YES. [2023-09-01 08:14:32,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138528 conditions, 61540 events. 48517/61540 cut-off events. For 6444/8262 co-relation queries the response was YES. Maximal size of possible extension queue 5500. Compared 370137 event pairs, 15031 based on Foata normal form. 18/19073 useless extension candidates. Maximal degree in co-relation 132498. Up to 34681 conditions per place. [2023-09-01 08:14:32,884 INFO L137 encePairwiseOnDemand]: 330/334 looper letters, 73 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-09-01 08:14:32,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 400 flow [2023-09-01 08:14:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:14:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:14:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-09-01 08:14:32,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48502994011976047 [2023-09-01 08:14:32,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-09-01 08:14:32,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-09-01 08:14:32,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:32,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-09-01 08:14:32,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:32,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:32,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:32,892 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 167 flow. Second operand 3 states and 486 transitions. [2023-09-01 08:14:32,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 400 flow [2023-09-01 08:14:32,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 394 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 08:14:32,898 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 180 flow [2023-09-01 08:14:32,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2023-09-01 08:14:32,900 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-09-01 08:14:32,900 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 180 flow [2023-09-01 08:14:32,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:32,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:32,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:14:32,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:14:32,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:32,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:32,902 INFO L85 PathProgramCache]: Analyzing trace with hash 124939761, now seen corresponding path program 1 times [2023-09-01 08:14:32,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:32,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431382783] [2023-09-01 08:14:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:32,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:14:32,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431382783] [2023-09-01 08:14:32,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431382783] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:14:32,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:14:32,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:14:32,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477730652] [2023-09-01 08:14:32,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:14:32,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:14:32,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:32,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:14:32,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:14:32,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 334 [2023-09-01 08:14:32,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:32,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:32,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 334 [2023-09-01 08:14:32,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:38,179 INFO L130 PetriNetUnfolder]: 38938/49690 cut-off events. [2023-09-01 08:14:38,181 INFO L131 PetriNetUnfolder]: For 6811/7938 co-relation queries the response was YES. [2023-09-01 08:14:38,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115155 conditions, 49690 events. 38938/49690 cut-off events. For 6811/7938 co-relation queries the response was YES. Maximal size of possible extension queue 4537. Compared 295138 event pairs, 7839 based on Foata normal form. 1127/18482 useless extension candidates. Maximal degree in co-relation 111226. Up to 32389 conditions per place. [2023-09-01 08:14:38,456 INFO L137 encePairwiseOnDemand]: 330/334 looper letters, 70 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-09-01 08:14:38,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 393 flow [2023-09-01 08:14:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:14:38,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:14:38,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-09-01 08:14:38,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48502994011976047 [2023-09-01 08:14:38,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-09-01 08:14:38,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-09-01 08:14:38,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:38,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-09-01 08:14:38,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:38,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:38,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:38,461 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 180 flow. Second operand 3 states and 486 transitions. [2023-09-01 08:14:38,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 393 flow [2023-09-01 08:14:38,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:14:38,469 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 187 flow [2023-09-01 08:14:38,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-09-01 08:14:38,470 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-09-01 08:14:38,470 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 187 flow [2023-09-01 08:14:38,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:38,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:38,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:14:38,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:14:38,470 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:38,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:38,471 INFO L85 PathProgramCache]: Analyzing trace with hash 124939757, now seen corresponding path program 1 times [2023-09-01 08:14:38,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:38,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364401519] [2023-09-01 08:14:38,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:38,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:38,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364401519] [2023-09-01 08:14:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364401519] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:14:38,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377887486] [2023-09-01 08:14:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:38,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:14:38,685 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) [2023-09-01 08:14:38,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:14:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:38,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 08:14:38,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:14:38,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:14:38,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:14:38,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:14:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:38,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:14:38,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:14:38,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-09-01 08:14:39,003 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:14:39,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 08:14:39,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-09-01 08:14:39,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:39,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377887486] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:14:39,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:14:39,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-09-01 08:14:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959131612] [2023-09-01 08:14:39,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:14:39,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:14:39,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:39,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:14:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=119, Unknown=2, NotChecked=0, Total=156 [2023-09-01 08:14:39,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 334 [2023-09-01 08:14:39,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 187 flow. Second operand has 13 states, 13 states have (on average 117.3076923076923) internal successors, (1525), 13 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:39,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:39,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 334 [2023-09-01 08:14:39,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:46,144 INFO L130 PetriNetUnfolder]: 50961/66868 cut-off events. [2023-09-01 08:14:46,144 INFO L131 PetriNetUnfolder]: For 17490/17634 co-relation queries the response was YES. [2023-09-01 08:14:46,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154135 conditions, 66868 events. 50961/66868 cut-off events. For 17490/17634 co-relation queries the response was YES. Maximal size of possible extension queue 6877. Compared 446816 event pairs, 16314 based on Foata normal form. 0/23965 useless extension candidates. Maximal degree in co-relation 148322. Up to 42769 conditions per place. [2023-09-01 08:14:46,668 INFO L137 encePairwiseOnDemand]: 321/334 looper letters, 87 selfloop transitions, 19 changer transitions 0/108 dead transitions. [2023-09-01 08:14:46,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 569 flow [2023-09-01 08:14:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:14:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:14:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1031 transitions. [2023-09-01 08:14:46,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38585329341317365 [2023-09-01 08:14:46,671 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1031 transitions. [2023-09-01 08:14:46,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1031 transitions. [2023-09-01 08:14:46,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:46,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1031 transitions. [2023-09-01 08:14:46,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.875) internal successors, (1031), 8 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:46,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:46,676 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:46,676 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 187 flow. Second operand 8 states and 1031 transitions. [2023-09-01 08:14:46,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 569 flow [2023-09-01 08:14:46,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 563 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:14:46,683 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 304 flow [2023-09-01 08:14:46,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=304, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-09-01 08:14:46,684 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-09-01 08:14:46,684 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 304 flow [2023-09-01 08:14:46,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 117.3076923076923) internal successors, (1525), 13 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:46,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:46,685 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:14:46,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:14:46,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:46,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:46,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:46,890 INFO L85 PathProgramCache]: Analyzing trace with hash 124668617, now seen corresponding path program 2 times [2023-09-01 08:14:46,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:46,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110816817] [2023-09-01 08:14:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:46,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:46,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:46,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110816817] [2023-09-01 08:14:46,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110816817] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:14:46,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889268826] [2023-09-01 08:14:46,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:14:46,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:46,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:14:46,959 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) [2023-09-01 08:14:46,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:14:47,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:14:47,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:14:47,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:14:47,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:14:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:14:47,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:14:47,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889268826] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:14:47,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:14:47,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:14:47,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480361566] [2023-09-01 08:14:47,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:14:47,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:14:47,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:47,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:14:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:14:47,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 334 [2023-09-01 08:14:47,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:47,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:47,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 334 [2023-09-01 08:14:47,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:53,595 INFO L130 PetriNetUnfolder]: 48546/63641 cut-off events. [2023-09-01 08:14:53,595 INFO L131 PetriNetUnfolder]: For 37450/39432 co-relation queries the response was YES. [2023-09-01 08:14:53,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152709 conditions, 63641 events. 48546/63641 cut-off events. For 37450/39432 co-relation queries the response was YES. Maximal size of possible extension queue 6681. Compared 422238 event pairs, 25339 based on Foata normal form. 1767/26138 useless extension candidates. Maximal degree in co-relation 148756. Up to 63132 conditions per place. [2023-09-01 08:14:53,935 INFO L137 encePairwiseOnDemand]: 332/334 looper letters, 53 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-09-01 08:14:53,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 402 flow [2023-09-01 08:14:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:14:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:14:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-09-01 08:14:53,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45109780439121755 [2023-09-01 08:14:53,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-09-01 08:14:53,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-09-01 08:14:53,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:53,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-09-01 08:14:53,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:53,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:53,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:53,939 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 304 flow. Second operand 3 states and 452 transitions. [2023-09-01 08:14:53,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 402 flow [2023-09-01 08:14:53,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 381 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-09-01 08:14:53,960 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 275 flow [2023-09-01 08:14:53,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-09-01 08:14:53,961 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2023-09-01 08:14:53,961 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 275 flow [2023-09-01 08:14:53,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:53,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:53,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:14:53,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:14:54,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:54,165 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:54,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash 124939758, now seen corresponding path program 1 times [2023-09-01 08:14:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:54,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007395773] [2023-09-01 08:14:54,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:54,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:54,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:54,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007395773] [2023-09-01 08:14:54,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007395773] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:14:54,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078548306] [2023-09-01 08:14:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:54,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:54,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:14:54,356 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) [2023-09-01 08:14:54,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:14:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:54,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 08:14:54,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:14:54,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:14:54,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:14:54,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:14:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:54,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:14:54,577 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:14:54,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-09-01 08:14:54,583 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:14:54,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-09-01 08:14:54,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-09-01 08:14:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:54,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078548306] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:14:54,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:14:54,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-09-01 08:14:54,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826436306] [2023-09-01 08:14:54,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:14:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:14:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:14:54,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-09-01 08:14:54,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 334 [2023-09-01 08:14:54,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 122.25) internal successors, (1467), 12 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:54,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:54,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 334 [2023-09-01 08:14:54,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:15:02,511 INFO L130 PetriNetUnfolder]: 54413/71683 cut-off events. [2023-09-01 08:15:02,511 INFO L131 PetriNetUnfolder]: For 41741/41885 co-relation queries the response was YES. [2023-09-01 08:15:02,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171461 conditions, 71683 events. 54413/71683 cut-off events. For 41741/41885 co-relation queries the response was YES. Maximal size of possible extension queue 7620. Compared 489057 event pairs, 19277 based on Foata normal form. 4/27484 useless extension candidates. Maximal degree in co-relation 171444. Up to 47529 conditions per place. [2023-09-01 08:15:02,886 INFO L137 encePairwiseOnDemand]: 321/334 looper letters, 86 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2023-09-01 08:15:02,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 110 transitions, 624 flow [2023-09-01 08:15:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:15:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:15:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1069 transitions. [2023-09-01 08:15:02,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4000748502994012 [2023-09-01 08:15:02,889 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1069 transitions. [2023-09-01 08:15:02,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1069 transitions. [2023-09-01 08:15:02,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:15:02,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1069 transitions. [2023-09-01 08:15:02,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.625) internal successors, (1069), 8 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:02,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:02,895 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:02,895 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 275 flow. Second operand 8 states and 1069 transitions. [2023-09-01 08:15:02,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 110 transitions, 624 flow [2023-09-01 08:15:02,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:15:02,919 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 349 flow [2023-09-01 08:15:02,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=349, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2023-09-01 08:15:02,920 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-09-01 08:15:02,920 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 349 flow [2023-09-01 08:15:02,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.25) internal successors, (1467), 12 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:02,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:15:02,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:15:02,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:15:03,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:15:03,121 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:15:03,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:15:03,122 INFO L85 PathProgramCache]: Analyzing trace with hash -163579960, now seen corresponding path program 1 times [2023-09-01 08:15:03,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:15:03,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811779273] [2023-09-01 08:15:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:15:03,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:15:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:15:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:03,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:15:03,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811779273] [2023-09-01 08:15:03,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811779273] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:15:03,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:15:03,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:15:03,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362394338] [2023-09-01 08:15:03,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:15:03,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:15:03,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:15:03,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:15:03,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:15:03,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 334 [2023-09-01 08:15:03,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:03,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:15:03,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 334 [2023-09-01 08:15:03,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:15:12,808 INFO L130 PetriNetUnfolder]: 67239/89778 cut-off events. [2023-09-01 08:15:12,808 INFO L131 PetriNetUnfolder]: For 92791/95210 co-relation queries the response was YES. [2023-09-01 08:15:13,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223476 conditions, 89778 events. 67239/89778 cut-off events. For 92791/95210 co-relation queries the response was YES. Maximal size of possible extension queue 9455. Compared 626484 event pairs, 9950 based on Foata normal form. 2299/37981 useless extension candidates. Maximal degree in co-relation 223457. Up to 66155 conditions per place. [2023-09-01 08:15:13,310 INFO L137 encePairwiseOnDemand]: 323/334 looper letters, 82 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2023-09-01 08:15:13,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 688 flow [2023-09-01 08:15:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:15:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:15:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-09-01 08:15:13,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48403193612774453 [2023-09-01 08:15:13,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-09-01 08:15:13,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-09-01 08:15:13,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:15:13,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-09-01 08:15:13,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:13,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:13,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:13,324 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 349 flow. Second operand 3 states and 485 transitions. [2023-09-01 08:15:13,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 688 flow [2023-09-01 08:15:13,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 679 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 08:15:13,359 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 416 flow [2023-09-01 08:15:13,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2023-09-01 08:15:13,361 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2023-09-01 08:15:13,361 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 416 flow [2023-09-01 08:15:13,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:13,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:15:13,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:15:13,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:15:13,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:15:13,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:15:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash -163579858, now seen corresponding path program 1 times [2023-09-01 08:15:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:15:13,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645153801] [2023-09-01 08:15:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:15:13,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:15:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:15:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:13,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:15:13,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645153801] [2023-09-01 08:15:13,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645153801] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:15:13,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:15:13,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:15:13,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885348772] [2023-09-01 08:15:13,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:15:13,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:15:13,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:15:13,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:15:13,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:15:13,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 334 [2023-09-01 08:15:13,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:13,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:15:13,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 334 [2023-09-01 08:15:13,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:15:25,560 INFO L130 PetriNetUnfolder]: 76820/110533 cut-off events. [2023-09-01 08:15:25,560 INFO L131 PetriNetUnfolder]: For 180322/185890 co-relation queries the response was YES. [2023-09-01 08:15:25,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339326 conditions, 110533 events. 76820/110533 cut-off events. For 180322/185890 co-relation queries the response was YES. Maximal size of possible extension queue 12250. Compared 951075 event pairs, 28603 based on Foata normal form. 3584/74935 useless extension candidates. Maximal degree in co-relation 339304. Up to 64611 conditions per place. [2023-09-01 08:15:26,210 INFO L137 encePairwiseOnDemand]: 330/334 looper letters, 103 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-09-01 08:15:26,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 110 transitions, 841 flow [2023-09-01 08:15:26,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:15:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:15:26,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-09-01 08:15:26,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820359281437126 [2023-09-01 08:15:26,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-09-01 08:15:26,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-09-01 08:15:26,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:15:26,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-09-01 08:15:26,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:26,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:26,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:26,214 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 416 flow. Second operand 3 states and 483 transitions. [2023-09-01 08:15:26,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 110 transitions, 841 flow [2023-09-01 08:15:26,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 811 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:15:26,922 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 427 flow [2023-09-01 08:15:26,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-09-01 08:15:26,923 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2023-09-01 08:15:26,923 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 427 flow [2023-09-01 08:15:26,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:26,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:15:26,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:15:26,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:15:26,924 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:15:26,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:15:26,924 INFO L85 PathProgramCache]: Analyzing trace with hash -163579961, now seen corresponding path program 1 times [2023-09-01 08:15:26,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:15:26,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711896641] [2023-09-01 08:15:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:15:26,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:15:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:15:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:26,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:15:26,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711896641] [2023-09-01 08:15:26,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711896641] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:15:26,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:15:26,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:15:26,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283812518] [2023-09-01 08:15:26,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:15:26,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:15:26,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:15:26,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:15:26,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:15:26,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 334 [2023-09-01 08:15:26,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:26,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:15:26,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 334 [2023-09-01 08:15:26,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:15:38,973 INFO L130 PetriNetUnfolder]: 74107/108446 cut-off events. [2023-09-01 08:15:38,973 INFO L131 PetriNetUnfolder]: For 152718/158589 co-relation queries the response was YES. [2023-09-01 08:15:39,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331556 conditions, 108446 events. 74107/108446 cut-off events. For 152718/158589 co-relation queries the response was YES. Maximal size of possible extension queue 13320. Compared 959117 event pairs, 15492 based on Foata normal form. 6635/70699 useless extension candidates. Maximal degree in co-relation 331534. Up to 82923 conditions per place. [2023-09-01 08:15:39,641 INFO L137 encePairwiseOnDemand]: 323/334 looper letters, 92 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2023-09-01 08:15:39,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 111 transitions, 848 flow [2023-09-01 08:15:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:15:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:15:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-09-01 08:15:39,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48403193612774453 [2023-09-01 08:15:39,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-09-01 08:15:39,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-09-01 08:15:39,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:15:39,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-09-01 08:15:39,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:39,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:39,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:39,645 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 427 flow. Second operand 3 states and 485 transitions. [2023-09-01 08:15:39,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 111 transitions, 848 flow [2023-09-01 08:15:39,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 843 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:15:39,754 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 584 flow [2023-09-01 08:15:39,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=584, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2023-09-01 08:15:39,755 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2023-09-01 08:15:39,756 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 584 flow [2023-09-01 08:15:39,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:39,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:15:39,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:15:39,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:15:39,756 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:15:39,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:15:39,757 INFO L85 PathProgramCache]: Analyzing trace with hash -163579964, now seen corresponding path program 1 times [2023-09-01 08:15:39,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:15:39,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956352046] [2023-09-01 08:15:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:15:39,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:15:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:15:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:39,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:15:39,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956352046] [2023-09-01 08:15:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956352046] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:15:39,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:15:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:15:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137298173] [2023-09-01 08:15:39,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:15:39,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:15:39,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:15:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:15:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:15:39,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 334 [2023-09-01 08:15:39,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 584 flow. Second operand has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:39,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:15:39,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 334 [2023-09-01 08:15:39,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:15:52,602 INFO L130 PetriNetUnfolder]: 75998/111799 cut-off events. [2023-09-01 08:15:52,602 INFO L131 PetriNetUnfolder]: For 232916/236074 co-relation queries the response was YES. [2023-09-01 08:15:52,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392883 conditions, 111799 events. 75998/111799 cut-off events. For 232916/236074 co-relation queries the response was YES. Maximal size of possible extension queue 12171. Compared 972460 event pairs, 52129 based on Foata normal form. 3300/78231 useless extension candidates. Maximal degree in co-relation 392858. Up to 110626 conditions per place. [2023-09-01 08:15:53,331 INFO L137 encePairwiseOnDemand]: 325/334 looper letters, 112 selfloop transitions, 4 changer transitions 2/122 dead transitions. [2023-09-01 08:15:53,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 971 flow [2023-09-01 08:15:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:15:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:15:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-09-01 08:15:53,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359281437125748 [2023-09-01 08:15:53,334 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-09-01 08:15:53,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-09-01 08:15:53,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:15:53,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-09-01 08:15:53,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:53,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:53,337 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:53,337 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 584 flow. Second operand 5 states and 728 transitions. [2023-09-01 08:15:53,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 971 flow [2023-09-01 08:15:53,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 931 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:15:53,706 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 593 flow [2023-09-01 08:15:53,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=593, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2023-09-01 08:15:53,706 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2023-09-01 08:15:53,706 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 593 flow [2023-09-01 08:15:53,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:53,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:15:53,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:15:53,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:15:53,707 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:15:53,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:15:53,708 INFO L85 PathProgramCache]: Analyzing trace with hash -421638827, now seen corresponding path program 1 times [2023-09-01 08:15:53,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:15:53,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092898565] [2023-09-01 08:15:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:15:53,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:15:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:15:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:53,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:15:53,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092898565] [2023-09-01 08:15:53,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092898565] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:15:53,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48365126] [2023-09-01 08:15:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:15:53,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:15:53,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:15:53,878 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:15:53,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:15:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:15:54,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 08:15:54,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:15:54,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:15:54,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:15:54,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:15:54,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:15:54,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:15:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:54,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:15:54,111 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_382 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_382) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-09-01 08:15:54,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:15:54,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 08:15:54,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:15:54,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-09-01 08:15:54,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-09-01 08:15:54,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-09-01 08:15:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:15:54,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48365126] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:15:54,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:15:54,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-09-01 08:15:54,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320691651] [2023-09-01 08:15:54,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:15:54,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 08:15:54,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:15:54,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 08:15:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=141, Unknown=3, NotChecked=24, Total=210 [2023-09-01 08:15:54,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 334 [2023-09-01 08:15:54,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 593 flow. Second operand has 15 states, 15 states have (on average 110.26666666666667) internal successors, (1654), 15 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:15:54,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:15:54,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 334 [2023-09-01 08:15:54,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:16:06,208 INFO L130 PetriNetUnfolder]: 70170/103561 cut-off events. [2023-09-01 08:16:06,209 INFO L131 PetriNetUnfolder]: For 221451/223999 co-relation queries the response was YES. [2023-09-01 08:16:06,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371257 conditions, 103561 events. 70170/103561 cut-off events. For 221451/223999 co-relation queries the response was YES. Maximal size of possible extension queue 12319. Compared 930611 event pairs, 15569 based on Foata normal form. 2600/69558 useless extension candidates. Maximal degree in co-relation 371230. Up to 69569 conditions per place. [2023-09-01 08:16:06,947 INFO L137 encePairwiseOnDemand]: 322/334 looper letters, 159 selfloop transitions, 29 changer transitions 1/192 dead transitions. [2023-09-01 08:16:06,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 192 transitions, 1620 flow [2023-09-01 08:16:06,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:16:06,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:16:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 993 transitions. [2023-09-01 08:16:06,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716317365269461 [2023-09-01 08:16:06,950 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 993 transitions. [2023-09-01 08:16:06,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 993 transitions. [2023-09-01 08:16:06,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:16:06,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 993 transitions. [2023-09-01 08:16:06,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.125) internal successors, (993), 8 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:06,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:06,954 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:06,955 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 593 flow. Second operand 8 states and 993 transitions. [2023-09-01 08:16:06,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 192 transitions, 1620 flow [2023-09-01 08:16:07,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 192 transitions, 1615 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:16:07,225 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 783 flow [2023-09-01 08:16:07,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=783, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2023-09-01 08:16:07,226 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2023-09-01 08:16:07,226 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 783 flow [2023-09-01 08:16:07,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.26666666666667) internal successors, (1654), 15 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:07,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:07,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:16:07,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:16:07,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:07,427 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:16:07,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash -421638826, now seen corresponding path program 1 times [2023-09-01 08:16:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:07,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456084094] [2023-09-01 08:16:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:07,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:07,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456084094] [2023-09-01 08:16:07,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456084094] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:16:07,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035096078] [2023-09-01 08:16:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:07,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:07,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:16:07,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:16:07,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:16:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:07,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 08:16:07,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:16:07,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:16:07,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:16:07,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:16:07,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:16:07,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:16:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:07,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:16:07,852 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_426 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_426) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-09-01 08:16:07,876 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:16:07,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-09-01 08:16:07,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:16:07,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-09-01 08:16:07,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-09-01 08:16:07,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-09-01 08:16:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:07,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035096078] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:16:07,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:16:07,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-09-01 08:16:07,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113289258] [2023-09-01 08:16:07,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:16:07,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 08:16:07,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:07,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 08:16:07,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=141, Unknown=3, NotChecked=24, Total=210 [2023-09-01 08:16:07,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 334 [2023-09-01 08:16:07,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 783 flow. Second operand has 15 states, 15 states have (on average 110.26666666666667) internal successors, (1654), 15 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:07,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:07,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 334 [2023-09-01 08:16:07,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:16:20,548 INFO L130 PetriNetUnfolder]: 71502/103253 cut-off events. [2023-09-01 08:16:20,549 INFO L131 PetriNetUnfolder]: For 274059/276495 co-relation queries the response was YES. [2023-09-01 08:16:20,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388401 conditions, 103253 events. 71502/103253 cut-off events. For 274059/276495 co-relation queries the response was YES. Maximal size of possible extension queue 12228. Compared 888772 event pairs, 26001 based on Foata normal form. 2488/68666 useless extension candidates. Maximal degree in co-relation 388372. Up to 69705 conditions per place. [2023-09-01 08:16:21,258 INFO L137 encePairwiseOnDemand]: 322/334 looper letters, 158 selfloop transitions, 30 changer transitions 1/192 dead transitions. [2023-09-01 08:16:21,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 192 transitions, 1706 flow [2023-09-01 08:16:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:16:21,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:16:21,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 992 transitions. [2023-09-01 08:16:21,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712574850299401 [2023-09-01 08:16:21,266 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 992 transitions. [2023-09-01 08:16:21,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 992 transitions. [2023-09-01 08:16:21,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:16:21,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 992 transitions. [2023-09-01 08:16:21,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:21,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:21,270 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 334.0) internal successors, (3006), 9 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:21,270 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 783 flow. Second operand 8 states and 992 transitions. [2023-09-01 08:16:21,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 192 transitions, 1706 flow [2023-09-01 08:16:21,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 192 transitions, 1678 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-09-01 08:16:21,743 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 824 flow [2023-09-01 08:16:21,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=824, PETRI_PLACES=95, PETRI_TRANSITIONS=100} [2023-09-01 08:16:21,743 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2023-09-01 08:16:21,743 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 824 flow [2023-09-01 08:16:21,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.26666666666667) internal successors, (1654), 15 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:21,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:21,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:16:21,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:16:21,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:21,944 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:16:21,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash -421830996, now seen corresponding path program 1 times [2023-09-01 08:16:21,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:21,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114380866] [2023-09-01 08:16:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:21,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:22,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:22,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114380866] [2023-09-01 08:16:22,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114380866] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:16:22,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778295954] [2023-09-01 08:16:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:22,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:22,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:16:22,013 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:16:22,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:16:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:22,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:16:22,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:16:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:22,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:16:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:22,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778295954] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:16:22,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:16:22,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-09-01 08:16:22,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781748381] [2023-09-01 08:16:22,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:16:22,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:16:22,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:22,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:16:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-09-01 08:16:22,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 334 [2023-09-01 08:16:22,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 824 flow. Second operand has 14 states, 14 states have (on average 129.28571428571428) internal successors, (1810), 14 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:22,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:22,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 334 [2023-09-01 08:16:22,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:16:32,690 INFO L130 PetriNetUnfolder]: 58602/85584 cut-off events. [2023-09-01 08:16:32,690 INFO L131 PetriNetUnfolder]: For 271693/273823 co-relation queries the response was YES. [2023-09-01 08:16:33,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320174 conditions, 85584 events. 58602/85584 cut-off events. For 271693/273823 co-relation queries the response was YES. Maximal size of possible extension queue 10087. Compared 732543 event pairs, 30634 based on Foata normal form. 4322/59721 useless extension candidates. Maximal degree in co-relation 320143. Up to 59525 conditions per place. [2023-09-01 08:16:33,309 INFO L137 encePairwiseOnDemand]: 321/334 looper letters, 354 selfloop transitions, 15 changer transitions 3/375 dead transitions. [2023-09-01 08:16:33,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 375 transitions, 3190 flow [2023-09-01 08:16:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:16:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:16:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1751 transitions. [2023-09-01 08:16:33,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43687624750499005 [2023-09-01 08:16:33,312 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1751 transitions. [2023-09-01 08:16:33,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1751 transitions. [2023-09-01 08:16:33,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:16:33,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1751 transitions. [2023-09-01 08:16:33,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 145.91666666666666) internal successors, (1751), 12 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:33,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 334.0) internal successors, (4342), 13 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:33,319 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 334.0) internal successors, (4342), 13 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:33,319 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 824 flow. Second operand 12 states and 1751 transitions. [2023-09-01 08:16:33,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 375 transitions, 3190 flow [2023-09-01 08:16:33,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 375 transitions, 3159 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-09-01 08:16:33,606 INFO L231 Difference]: Finished difference. Result has 108 places, 110 transitions, 1025 flow [2023-09-01 08:16:33,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1025, PETRI_PLACES=108, PETRI_TRANSITIONS=110} [2023-09-01 08:16:33,607 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2023-09-01 08:16:33,607 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 110 transitions, 1025 flow [2023-09-01 08:16:33,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 129.28571428571428) internal successors, (1810), 14 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:33,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:33,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:16:33,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:16:33,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 08:16:33,814 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:16:33,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash -185845481, now seen corresponding path program 1 times [2023-09-01 08:16:33,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:33,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385098337] [2023-09-01 08:16:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:33,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:33,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385098337] [2023-09-01 08:16:33,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385098337] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:16:33,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839244889] [2023-09-01 08:16:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:33,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:33,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:16:33,979 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:16:33,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:16:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:34,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 08:16:34,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:16:34,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:16:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:16:34,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:16:34,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:16:34,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:16:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:34,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:16:34,201 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_506 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_506) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-09-01 08:16:34,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:16:34,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 08:16:34,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:16:34,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-09-01 08:16:34,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-09-01 08:16:34,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-09-01 08:16:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:34,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839244889] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:16:34,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:16:34,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-09-01 08:16:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679376740] [2023-09-01 08:16:34,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:16:34,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 08:16:34,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:34,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 08:16:34,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-09-01 08:16:34,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 334 [2023-09-01 08:16:34,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 110 transitions, 1025 flow. Second operand has 15 states, 15 states have (on average 110.4) internal successors, (1656), 15 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:34,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:34,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 334 [2023-09-01 08:16:34,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand