./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.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-min-max-dec.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 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca --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 08:09:51,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:09:51,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:09:51,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:09:51,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:09:51,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:09:51,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:09:51,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:09:51,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:09:51,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:09:51,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:09:51,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:09:51,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:09:51,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:09:51,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:09:51,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:09:51,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:09:51,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:09:51,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:09:51,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:09:51,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:09:51,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:09:51,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:09:51,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:09:51,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:09:51,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:09:51,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:09:51,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:09:51,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:09:51,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:09:51,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:09:51,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:09:51,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:09:51,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:09:51,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:09:51,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:09:51,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:09:51,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:09:51,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:09:51,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:09:51,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:09:51,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:09:51,310 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:09:51,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:09:51,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:09:51,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:09:51,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:09:51,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:09:51,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:09:51,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:09:51,313 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:09:51,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:09:51,314 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:09:51,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:09:51,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:09:51,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:09:51,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:09:51,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:09:51,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:09:51,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:09:51,315 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:09:51,315 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:09:51,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:09:51,316 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:09:51,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:09:51,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:09:51,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:09:51,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:09:51,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:09:51,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:09:51,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:09:51,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:09:51,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:09:51,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:09:51,317 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:09:51,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:09:51,318 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:09:51,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:09:51,318 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:09:51,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:09:51,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:09:51,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:09:51,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:09:51,559 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:09:51,559 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:09:51,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-09-01 08:09:52,555 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:09:52,720 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:09:52,721 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-09-01 08:09:52,725 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58d516e76/d72bba18254d4d5798f35eb7685649db/FLAG0cf95bae9 [2023-09-01 08:09:52,734 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58d516e76/d72bba18254d4d5798f35eb7685649db [2023-09-01 08:09:52,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:09:52,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:09:52,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:09:52,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:09:52,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:09:52,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:52,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76dba9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52, skipping insertion in model container [2023-09-01 08:09:52,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:52,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:09:52,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:09:52,880 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-min-max-dec.wvr.c[3019,3032] [2023-09-01 08:09:52,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:09:52,889 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:09:52,918 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-min-max-dec.wvr.c[3019,3032] [2023-09-01 08:09:52,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:09:52,929 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:09:52,929 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:09:52,933 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:09:52,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52 WrapperNode [2023-09-01 08:09:52,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:09:52,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:09:52,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:09:52,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:09:52,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:52,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:52,973 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 145 [2023-09-01 08:09:52,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:09:52,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:09:52,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:09:52,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:09:52,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:52,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:52,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:52,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:53,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:53,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:53,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:53,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:53,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:09:53,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:09:53,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:09:53,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:09:53,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (1/1) ... [2023-09-01 08:09:53,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:09:53,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:09:53,041 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 08:09:53,061 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 08:09:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:09:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:09:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:09:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:09:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:09:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:09:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:09:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:09:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:09:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:09:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 08:09:53,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 08:09:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:09:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:09:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:09:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:09:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:09:53,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:09:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:09:53,077 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 08:09:53,217 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:09:53,234 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:09:53,496 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:09:53,626 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:09:53,626 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:09:53,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:09:53 BoogieIcfgContainer [2023-09-01 08:09:53,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:09:53,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:09:53,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:09:53,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:09:53,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:09:52" (1/3) ... [2023-09-01 08:09:53,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4a34ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:09:53, skipping insertion in model container [2023-09-01 08:09:53,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:09:52" (2/3) ... [2023-09-01 08:09:53,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4a34ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:09:53, skipping insertion in model container [2023-09-01 08:09:53,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:09:53" (3/3) ... [2023-09-01 08:09:53,642 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2023-09-01 08:09:53,660 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:09:53,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:09:53,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-09-01 08:09:53,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:09:53,754 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 08:09:53,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 180 transitions, 392 flow [2023-09-01 08:09:53,850 INFO L130 PetriNetUnfolder]: 12/176 cut-off events. [2023-09-01 08:09:53,850 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 08:09:53,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 176 events. 12/176 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-09-01 08:09:53,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 180 transitions, 392 flow [2023-09-01 08:09:53,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 156 transitions, 333 flow [2023-09-01 08:09:53,860 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:09:53,866 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 156 transitions, 333 flow [2023-09-01 08:09:53,867 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 156 transitions, 333 flow [2023-09-01 08:09:53,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 156 transitions, 333 flow [2023-09-01 08:09:53,894 INFO L130 PetriNetUnfolder]: 11/156 cut-off events. [2023-09-01 08:09:53,894 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:09:53,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 156 events. 11/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 203 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-09-01 08:09:53,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 3864 [2023-09-01 08:09:59,588 INFO L134 LiptonReduction]: Checked pairs total: 5813 [2023-09-01 08:09:59,589 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-09-01 08:09:59,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:09:59,604 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;@574a073f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:09:59,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-09-01 08:09:59,606 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:09:59,607 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:09:59,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:09:59,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:09:59,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:09:59,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:09:59,611 INFO L85 PathProgramCache]: Analyzing trace with hash 24265, now seen corresponding path program 1 times [2023-09-01 08:09:59,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:09:59,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883432128] [2023-09-01 08:09:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:09:59,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:09:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:09:59,815 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 08:09:59,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:09:59,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883432128] [2023-09-01 08:09:59,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883432128] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:09:59,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:09:59,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:09:59,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723052610] [2023-09-01 08:09:59,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:09:59,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:09:59,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:09:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:09:59,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:09:59,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-09-01 08:09:59,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 103 flow. Second operand has 3 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 08:09:59,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:09:59,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-09-01 08:09:59,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:01,321 INFO L130 PetriNetUnfolder]: 14867/19013 cut-off events. [2023-09-01 08:10:01,321 INFO L131 PetriNetUnfolder]: For 578/578 co-relation queries the response was YES. [2023-09-01 08:10:01,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39302 conditions, 19013 events. 14867/19013 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 95418 event pairs, 10390 based on Foata normal form. 0/8955 useless extension candidates. Maximal degree in co-relation 17376. Up to 9497 conditions per place. [2023-09-01 08:10:01,421 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 71 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-09-01 08:10:01,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 336 flow [2023-09-01 08:10:01,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:10:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:10:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-09-01 08:10:01,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53596757852077 [2023-09-01 08:10:01,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-09-01 08:10:01,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-09-01 08:10:01,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:01,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-09-01 08:10:01,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 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 08:10:01,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:01,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:01,443 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 103 flow. Second operand 3 states and 529 transitions. [2023-09-01 08:10:01,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 336 flow [2023-09-01 08:10:01,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 310 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 08:10:01,496 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 100 flow [2023-09-01 08:10:01,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-09-01 08:10:01,500 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-09-01 08:10:01,500 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 100 flow [2023-09-01 08:10:01,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 08:10:01,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:01,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:10:01,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:10:01,501 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:01,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash 753399, now seen corresponding path program 1 times [2023-09-01 08:10:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:01,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104889112] [2023-09-01 08:10:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:01,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:01,628 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 08:10:01,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:01,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104889112] [2023-09-01 08:10:01,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104889112] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:10:01,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651304408] [2023-09-01 08:10:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:01,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:01,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:10:01,632 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 08:10:01,652 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 08:10:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:01,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:10:01,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:10:01,741 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 08:10:01,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:10:01,753 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 08:10:01,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651304408] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:10:01,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:10:01,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:10:01,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662066454] [2023-09-01 08:10:01,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:10:01,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:10:01,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:01,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:10:01,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:10:01,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-09-01 08:10:01,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 100 flow. Second operand has 7 states, 7 states have (on average 151.14285714285714) internal successors, (1058), 7 states have internal predecessors, (1058), 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 08:10:01,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:01,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-09-01 08:10:01,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:04,752 INFO L130 PetriNetUnfolder]: 37169/47531 cut-off events. [2023-09-01 08:10:04,753 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:10:04,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97393 conditions, 47531 events. 37169/47531 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2442. Compared 261251 event pairs, 25975 based on Foata normal form. 0/22418 useless extension candidates. Maximal degree in co-relation 77911. Up to 9496 conditions per place. [2023-09-01 08:10:04,978 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 172 selfloop transitions, 9 changer transitions 0/182 dead transitions. [2023-09-01 08:10:04,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 182 transitions, 790 flow [2023-09-01 08:10:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:10:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:10:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1234 transitions. [2023-09-01 08:10:04,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358228397742075 [2023-09-01 08:10:04,982 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1234 transitions. [2023-09-01 08:10:04,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1234 transitions. [2023-09-01 08:10:04,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:04,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1234 transitions. [2023-09-01 08:10:04,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.28571428571428) internal successors, (1234), 7 states have internal predecessors, (1234), 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 08:10:04,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 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 08:10:04,999 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 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 08:10:04,999 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 100 flow. Second operand 7 states and 1234 transitions. [2023-09-01 08:10:04,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 182 transitions, 790 flow [2023-09-01 08:10:05,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 182 transitions, 788 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:10:05,003 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 157 flow [2023-09-01 08:10:05,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=157, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-09-01 08:10:05,004 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-09-01 08:10:05,004 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 157 flow [2023-09-01 08:10:05,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 151.14285714285714) internal successors, (1058), 7 states have internal predecessors, (1058), 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 08:10:05,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:05,005 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 08:10:05,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:10:05,210 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 08:10:05,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:05,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:05,212 INFO L85 PathProgramCache]: Analyzing trace with hash 23356105, now seen corresponding path program 1 times [2023-09-01 08:10:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:05,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908029021] [2023-09-01 08:10:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:05,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:10:05,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:05,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908029021] [2023-09-01 08:10:05,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908029021] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:10:05,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:10:05,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:10:05,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690207258] [2023-09-01 08:10:05,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:10:05,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:10:05,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:05,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:10:05,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:10:05,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-09-01 08:10:05,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 08:10:05,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:05,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-09-01 08:10:05,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:07,833 INFO L130 PetriNetUnfolder]: 37166/47527 cut-off events. [2023-09-01 08:10:07,834 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:10:07,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97395 conditions, 47527 events. 37166/47527 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2706. Compared 264708 event pairs, 25975 based on Foata normal form. 2/22349 useless extension candidates. Maximal degree in co-relation 58427. Up to 47467 conditions per place. [2023-09-01 08:10:08,035 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-09-01 08:10:08,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 212 flow [2023-09-01 08:10:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:10:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:10:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-09-01 08:10:08,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49442755825734547 [2023-09-01 08:10:08,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-09-01 08:10:08,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-09-01 08:10:08,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:08,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-09-01 08:10:08,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 08:10:08,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:08,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:08,041 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 157 flow. Second operand 3 states and 488 transitions. [2023-09-01 08:10:08,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 212 flow [2023-09-01 08:10:08,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 204 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:10:08,044 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 124 flow [2023-09-01 08:10:08,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-09-01 08:10:08,045 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-09-01 08:10:08,045 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 124 flow [2023-09-01 08:10:08,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 08:10:08,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:08,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:10:08,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:10:08,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:08,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:08,047 INFO L85 PathProgramCache]: Analyzing trace with hash 966793443, now seen corresponding path program 1 times [2023-09-01 08:10:08,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:08,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103095751] [2023-09-01 08:10:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:08,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:08,117 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 08:10:08,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103095751] [2023-09-01 08:10:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103095751] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:10:08,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:10:08,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:10:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836667248] [2023-09-01 08:10:08,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:10:08,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:10:08,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:08,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:10:08,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:10:08,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-09-01 08:10:08,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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 08:10:08,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:08,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-09-01 08:10:08,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:11,903 INFO L130 PetriNetUnfolder]: 52386/67057 cut-off events. [2023-09-01 08:10:11,904 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:10:11,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137243 conditions, 67057 events. 52386/67057 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3655. Compared 395826 event pairs, 25985 based on Foata normal form. 0/31657 useless extension candidates. Maximal degree in co-relation 137231. Up to 47478 conditions per place. [2023-09-01 08:10:12,188 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 67 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-09-01 08:10:12,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 325 flow [2023-09-01 08:10:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:10:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:10:12,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-09-01 08:10:12,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268490374873354 [2023-09-01 08:10:12,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-09-01 08:10:12,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-09-01 08:10:12,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:12,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-09-01 08:10:12,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 08:10:12,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:12,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:12,195 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 124 flow. Second operand 3 states and 520 transitions. [2023-09-01 08:10:12,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 325 flow [2023-09-01 08:10:12,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:10:12,198 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 137 flow [2023-09-01 08:10:12,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=137, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-09-01 08:10:12,199 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-09-01 08:10:12,199 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 137 flow [2023-09-01 08:10:12,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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 08:10:12,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:12,200 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:10:12,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:10:12,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:12,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:12,201 INFO L85 PathProgramCache]: Analyzing trace with hash 970417879, now seen corresponding path program 2 times [2023-09-01 08:10:12,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:12,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483096362] [2023-09-01 08:10:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:12,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:12,289 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 08:10:12,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:12,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483096362] [2023-09-01 08:10:12,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483096362] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:10:12,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305283642] [2023-09-01 08:10:12,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:10:12,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:12,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:10:12,298 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 08:10:12,300 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 08:10:12,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:10:12,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:10:12,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:10:12,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:10:12,378 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 08:10:12,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:10:12,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305283642] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:10:12,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:10:12,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:10:12,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243017082] [2023-09-01 08:10:12,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:10:12,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:10:12,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:12,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:10:12,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:10:12,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-09-01 08:10:12,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 08:10:12,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:12,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-09-01 08:10:12,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:16,330 INFO L130 PetriNetUnfolder]: 52246/66916 cut-off events. [2023-09-01 08:10:16,330 INFO L131 PetriNetUnfolder]: For 7468/7468 co-relation queries the response was YES. [2023-09-01 08:10:16,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145938 conditions, 66916 events. 52246/66916 cut-off events. For 7468/7468 co-relation queries the response was YES. Maximal size of possible extension queue 3654. Compared 388168 event pairs, 37005 based on Foata normal form. 1/34577 useless extension candidates. Maximal degree in co-relation 145925. Up to 66836 conditions per place. [2023-09-01 08:10:16,607 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-09-01 08:10:16,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 209 flow [2023-09-01 08:10:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:10:16,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:10:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-09-01 08:10:16,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2023-09-01 08:10:16,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-09-01 08:10:16,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-09-01 08:10:16,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:16,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-09-01 08:10:16,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 08:10:16,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:16,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:16,613 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 137 flow. Second operand 3 states and 490 transitions. [2023-09-01 08:10:16,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 209 flow [2023-09-01 08:10:16,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 197 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 08:10:16,618 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 117 flow [2023-09-01 08:10:16,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-09-01 08:10:16,618 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-09-01 08:10:16,619 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 117 flow [2023-09-01 08:10:16,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 08:10:16,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:16,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:10:16,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:10:16,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:16,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:16,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash -94173660, now seen corresponding path program 1 times [2023-09-01 08:10:16,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:16,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262044572] [2023-09-01 08:10:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:16,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:16,869 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 08:10:16,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:16,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262044572] [2023-09-01 08:10:16,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262044572] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:10:16,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184552356] [2023-09-01 08:10:16,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:16,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:16,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:10:16,873 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 08:10:16,875 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 08:10:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:16,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 08:10:16,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:10:16,963 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 08:10:16,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:10:16,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184552356] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:10:16,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:10:16,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-09-01 08:10:16,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952383778] [2023-09-01 08:10:16,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:10:16,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:10:16,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:16,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:10:16,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:10:16,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 329 [2023-09-01 08:10:16,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 08:10:16,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:16,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 329 [2023-09-01 08:10:16,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:20,055 INFO L130 PetriNetUnfolder]: 41797/53534 cut-off events. [2023-09-01 08:10:20,055 INFO L131 PetriNetUnfolder]: For 3576/3576 co-relation queries the response was YES. [2023-09-01 08:10:20,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115549 conditions, 53534 events. 41797/53534 cut-off events. For 3576/3576 co-relation queries the response was YES. Maximal size of possible extension queue 2968. Compared 304000 event pairs, 29604 based on Foata normal form. 1/27663 useless extension candidates. Maximal degree in co-relation 115539. Up to 53470 conditions per place. [2023-09-01 08:10:20,251 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-09-01 08:10:20,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 199 flow [2023-09-01 08:10:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:10:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:10:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-09-01 08:10:20,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49138804457953394 [2023-09-01 08:10:20,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-09-01 08:10:20,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-09-01 08:10:20,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:20,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-09-01 08:10:20,254 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 08:10:20,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:20,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:20,255 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 117 flow. Second operand 3 states and 485 transitions. [2023-09-01 08:10:20,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 199 flow [2023-09-01 08:10:20,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 196 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 08:10:20,258 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 122 flow [2023-09-01 08:10:20,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, 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=3, PETRI_FLOW=122, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-09-01 08:10:20,259 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-09-01 08:10:20,259 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 122 flow [2023-09-01 08:10:20,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 08:10:20,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:20,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:10:20,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 08:10:20,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:20,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:20,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash 451344900, now seen corresponding path program 1 times [2023-09-01 08:10:20,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:20,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947277447] [2023-09-01 08:10:20,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:20,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:10:20,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947277447] [2023-09-01 08:10:20,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947277447] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:10:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286773199] [2023-09-01 08:10:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:20,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:20,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:10:20,501 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 08:10:20,503 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 08:10:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:20,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:10:20,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:10:20,634 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 08:10:20,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:10:20,684 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 08:10:20,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286773199] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:10:20,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:10:20,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-09-01 08:10:20,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579735336] [2023-09-01 08:10:20,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:10:20,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:10:20,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:20,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:10:20,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:10:20,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-09-01 08:10:20,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 122 flow. Second operand has 13 states, 13 states have (on average 142.69230769230768) internal successors, (1855), 13 states have internal predecessors, (1855), 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 08:10:20,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:20,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-09-01 08:10:20,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:24,589 INFO L130 PetriNetUnfolder]: 45473/58508 cut-off events. [2023-09-01 08:10:24,589 INFO L131 PetriNetUnfolder]: For 2008/2008 co-relation queries the response was YES. [2023-09-01 08:10:24,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126464 conditions, 58508 events. 45473/58508 cut-off events. For 2008/2008 co-relation queries the response was YES. Maximal size of possible extension queue 2888. Compared 350697 event pairs, 9888 based on Foata normal form. 212/31818 useless extension candidates. Maximal degree in co-relation 126452. Up to 16907 conditions per place. [2023-09-01 08:10:24,790 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 230 selfloop transitions, 14 changer transitions 0/245 dead transitions. [2023-09-01 08:10:24,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 245 transitions, 1075 flow [2023-09-01 08:10:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 08:10:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 08:10:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2091 transitions. [2023-09-01 08:10:24,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888940846387655 [2023-09-01 08:10:24,800 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2091 transitions. [2023-09-01 08:10:24,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2091 transitions. [2023-09-01 08:10:24,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:24,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2091 transitions. [2023-09-01 08:10:24,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.84615384615384) internal successors, (2091), 13 states have internal predecessors, (2091), 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 08:10:24,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 329.0) internal successors, (4606), 14 states have internal predecessors, (4606), 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 08:10:24,809 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 329.0) internal successors, (4606), 14 states have internal predecessors, (4606), 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 08:10:24,809 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 122 flow. Second operand 13 states and 2091 transitions. [2023-09-01 08:10:24,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 245 transitions, 1075 flow [2023-09-01 08:10:24,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 245 transitions, 1071 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:10:24,818 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 236 flow [2023-09-01 08:10:24,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=236, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-09-01 08:10:24,819 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-09-01 08:10:24,819 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 236 flow [2023-09-01 08:10:24,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 142.69230769230768) internal successors, (1855), 13 states have internal predecessors, (1855), 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 08:10:24,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:24,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:10:24,825 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 08:10:25,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:25,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:25,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1267936693, now seen corresponding path program 1 times [2023-09-01 08:10:25,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:25,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688842143] [2023-09-01 08:10:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:25,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:25,057 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 08:10:25,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:25,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688842143] [2023-09-01 08:10:25,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688842143] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:10:25,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:10:25,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:10:25,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067737910] [2023-09-01 08:10:25,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:10:25,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:10:25,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:25,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:10:25,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:10:25,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-09-01 08:10:25,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:10:25,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:25,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-09-01 08:10:25,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:30,132 INFO L130 PetriNetUnfolder]: 61647/79404 cut-off events. [2023-09-01 08:10:30,132 INFO L131 PetriNetUnfolder]: For 164740/164779 co-relation queries the response was YES. [2023-09-01 08:10:30,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223432 conditions, 79404 events. 61647/79404 cut-off events. For 164740/164779 co-relation queries the response was YES. Maximal size of possible extension queue 3821. Compared 481227 event pairs, 31779 based on Foata normal form. 1308/51100 useless extension candidates. Maximal degree in co-relation 223411. Up to 58370 conditions per place. [2023-09-01 08:10:30,556 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 83 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-09-01 08:10:30,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 562 flow [2023-09-01 08:10:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:10:30,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:10:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-09-01 08:10:30,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-09-01 08:10:30,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-09-01 08:10:30,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-09-01 08:10:30,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:30,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-09-01 08:10:30,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 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 08:10:30,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:30,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:30,561 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 236 flow. Second operand 3 states and 517 transitions. [2023-09-01 08:10:30,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 562 flow [2023-09-01 08:10:30,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 538 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-09-01 08:10:30,682 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 234 flow [2023-09-01 08:10:30,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-09-01 08:10:30,683 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-09-01 08:10:30,683 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 234 flow [2023-09-01 08:10:30,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:10:30,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:30,683 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 08:10:30,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:10:30,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:30,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1364116737, now seen corresponding path program 1 times [2023-09-01 08:10:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:30,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417876112] [2023-09-01 08:10:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:30,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:10:30,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417876112] [2023-09-01 08:10:30,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417876112] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:10:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814912542] [2023-09-01 08:10:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:30,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:30,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:10:30,740 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 08:10:30,747 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 08:10:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:30,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 08:10:30,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:10:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:10:30,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:10:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:10:30,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814912542] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:10:30,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:10:30,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2023-09-01 08:10:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304426699] [2023-09-01 08:10:30,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:10:30,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 08:10:30,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:30,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 08:10:30,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-09-01 08:10:31,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-09-01 08:10:31,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 234 flow. Second operand has 18 states, 18 states have (on average 142.5) internal successors, (2565), 18 states have internal predecessors, (2565), 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 08:10:31,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:31,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-09-01 08:10:31,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:36,384 INFO L130 PetriNetUnfolder]: 50781/65812 cut-off events. [2023-09-01 08:10:36,384 INFO L131 PetriNetUnfolder]: For 104034/104041 co-relation queries the response was YES. [2023-09-01 08:10:36,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180418 conditions, 65812 events. 50781/65812 cut-off events. For 104034/104041 co-relation queries the response was YES. Maximal size of possible extension queue 3057. Compared 409413 event pairs, 6276 based on Foata normal form. 3556/47432 useless extension candidates. Maximal degree in co-relation 180396. Up to 8372 conditions per place. [2023-09-01 08:10:36,748 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 412 selfloop transitions, 21 changer transitions 0/434 dead transitions. [2023-09-01 08:10:36,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 434 transitions, 2243 flow [2023-09-01 08:10:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 08:10:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 08:10:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3530 transitions. [2023-09-01 08:10:36,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487703785576126 [2023-09-01 08:10:36,754 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3530 transitions. [2023-09-01 08:10:36,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3530 transitions. [2023-09-01 08:10:36,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:36,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3530 transitions. [2023-09-01 08:10:36,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 160.45454545454547) internal successors, (3530), 22 states have internal predecessors, (3530), 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 08:10:36,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 329.0) internal successors, (7567), 23 states have internal predecessors, (7567), 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 08:10:36,771 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 329.0) internal successors, (7567), 23 states have internal predecessors, (7567), 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 08:10:36,771 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 234 flow. Second operand 22 states and 3530 transitions. [2023-09-01 08:10:36,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 434 transitions, 2243 flow [2023-09-01 08:10:37,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 434 transitions, 2191 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 08:10:37,423 INFO L231 Difference]: Finished difference. Result has 94 places, 57 transitions, 320 flow [2023-09-01 08:10:37,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=320, PETRI_PLACES=94, PETRI_TRANSITIONS=57} [2023-09-01 08:10:37,424 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2023-09-01 08:10:37,424 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 57 transitions, 320 flow [2023-09-01 08:10:37,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 142.5) internal successors, (2565), 18 states have internal predecessors, (2565), 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 08:10:37,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:37,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:10:37,429 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 08:10:37,625 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 08:10:37,626 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:37,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:37,626 INFO L85 PathProgramCache]: Analyzing trace with hash 656148694, now seen corresponding path program 1 times [2023-09-01 08:10:37,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:37,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224718813] [2023-09-01 08:10:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:37,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:37,662 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 08:10:37,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:37,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224718813] [2023-09-01 08:10:37,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224718813] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:10:37,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:10:37,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:10:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542021674] [2023-09-01 08:10:37,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:10:37,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:10:37,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:10:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:10:37,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-09-01 08:10:37,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 57 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 08:10:37,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:37,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-09-01 08:10:37,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:43,575 INFO L130 PetriNetUnfolder]: 64549/87410 cut-off events. [2023-09-01 08:10:43,576 INFO L131 PetriNetUnfolder]: For 233846/233846 co-relation queries the response was YES. [2023-09-01 08:10:43,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252923 conditions, 87410 events. 64549/87410 cut-off events. For 233846/233846 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 539374 event pairs, 36946 based on Foata normal form. 1016/65540 useless extension candidates. Maximal degree in co-relation 252895. Up to 57203 conditions per place. [2023-09-01 08:10:44,059 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 95 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-09-01 08:10:44,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 731 flow [2023-09-01 08:10:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:10:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:10:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-09-01 08:10:44,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2023-09-01 08:10:44,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-09-01 08:10:44,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-09-01 08:10:44,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:44,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-09-01 08:10:44,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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 08:10:44,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:44,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:10:44,064 INFO L175 Difference]: Start difference. First operand has 94 places, 57 transitions, 320 flow. Second operand 3 states and 516 transitions. [2023-09-01 08:10:44,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 731 flow [2023-09-01 08:10:44,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 97 transitions, 679 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-09-01 08:10:44,422 INFO L231 Difference]: Finished difference. Result has 89 places, 58 transitions, 301 flow [2023-09-01 08:10:44,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=89, PETRI_TRANSITIONS=58} [2023-09-01 08:10:44,423 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2023-09-01 08:10:44,423 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 58 transitions, 301 flow [2023-09-01 08:10:44,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 08:10:44,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:44,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:10:44,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:10:44,424 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:44,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:44,424 INFO L85 PathProgramCache]: Analyzing trace with hash 656148620, now seen corresponding path program 1 times [2023-09-01 08:10:44,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:44,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690310433] [2023-09-01 08:10:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:44,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:44,710 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 08:10:44,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:44,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690310433] [2023-09-01 08:10:44,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690310433] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:10:44,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195181327] [2023-09-01 08:10:44,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:44,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:44,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:10:44,712 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 08:10:44,712 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 08:10:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:44,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 08:10:44,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:10:44,854 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 08:10:44,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:10:44,894 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 08:10:44,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:10:44,930 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 08:10:44,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:10:44,956 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 08:10:44,974 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 08:10:44,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:10:45,037 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_438 (Array Int Int)) (v_ArrVal_439 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_438) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_439) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2023-09-01 08:10:45,078 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:10:45,079 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 28 treesize of output 29 [2023-09-01 08:10:45,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:10:45,088 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 245 treesize of output 237 [2023-09-01 08:10:45,115 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 50 treesize of output 42 [2023-09-01 08:10:45,133 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 53 treesize of output 49 [2023-09-01 08:10:45,137 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 49 treesize of output 47 [2023-09-01 08:10:45,187 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 08:10:45,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195181327] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:10:45,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:10:45,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 08:10:45,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977363953] [2023-09-01 08:10:45,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:10:45,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 08:10:45,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:45,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 08:10:45,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=239, Unknown=6, NotChecked=32, Total=342 [2023-09-01 08:10:45,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-09-01 08:10:45,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 58 transitions, 301 flow. Second operand has 19 states, 19 states have (on average 118.52631578947368) internal successors, (2252), 19 states have internal predecessors, (2252), 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 08:10:45,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:45,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-09-01 08:10:45,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:52,240 INFO L130 PetriNetUnfolder]: 70875/97186 cut-off events. [2023-09-01 08:10:52,240 INFO L131 PetriNetUnfolder]: For 220528/220528 co-relation queries the response was YES. [2023-09-01 08:10:52,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291506 conditions, 97186 events. 70875/97186 cut-off events. For 220528/220528 co-relation queries the response was YES. Maximal size of possible extension queue 3038. Compared 620661 event pairs, 20864 based on Foata normal form. 0/77944 useless extension candidates. Maximal degree in co-relation 291477. Up to 76327 conditions per place. [2023-09-01 08:10:52,926 INFO L137 encePairwiseOnDemand]: 320/329 looper letters, 166 selfloop transitions, 14 changer transitions 0/180 dead transitions. [2023-09-01 08:10:52,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 180 transitions, 1393 flow [2023-09-01 08:10:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:10:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:10:52,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1036 transitions. [2023-09-01 08:10:52,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39361702127659576 [2023-09-01 08:10:52,934 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1036 transitions. [2023-09-01 08:10:52,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1036 transitions. [2023-09-01 08:10:52,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:10:52,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1036 transitions. [2023-09-01 08:10:52,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.5) internal successors, (1036), 8 states have internal predecessors, (1036), 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 08:10:52,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 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 08:10:52,939 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 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 08:10:52,939 INFO L175 Difference]: Start difference. First operand has 89 places, 58 transitions, 301 flow. Second operand 8 states and 1036 transitions. [2023-09-01 08:10:52,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 180 transitions, 1393 flow [2023-09-01 08:10:53,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 180 transitions, 1389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:10:53,223 INFO L231 Difference]: Finished difference. Result has 97 places, 64 transitions, 384 flow [2023-09-01 08:10:53,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=97, PETRI_TRANSITIONS=64} [2023-09-01 08:10:53,223 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2023-09-01 08:10:53,223 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 64 transitions, 384 flow [2023-09-01 08:10:53,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 118.52631578947368) internal successors, (2252), 19 states have internal predecessors, (2252), 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 08:10:53,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:10:53,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:10:53,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 08:10:53,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:10:53,432 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:10:53,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:10:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash 651333432, now seen corresponding path program 1 times [2023-09-01 08:10:53,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:10:53,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741989179] [2023-09-01 08:10:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:10:53,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:10:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:10:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:10:53,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:10:53,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741989179] [2023-09-01 08:10:53,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741989179] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:10:53,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:10:53,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:10:53,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331936803] [2023-09-01 08:10:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:10:53,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:10:53,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:10:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:10:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:10:53,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-09-01 08:10:53,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 64 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 08:10:53,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:10:53,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-09-01 08:10:53,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:10:59,583 INFO L130 PetriNetUnfolder]: 64013/86660 cut-off events. [2023-09-01 08:10:59,583 INFO L131 PetriNetUnfolder]: For 243561/248929 co-relation queries the response was YES. [2023-09-01 08:10:59,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270971 conditions, 86660 events. 64013/86660 cut-off events. For 243561/248929 co-relation queries the response was YES. Maximal size of possible extension queue 3357. Compared 576974 event pairs, 12932 based on Foata normal form. 5368/84458 useless extension candidates. Maximal degree in co-relation 270939. Up to 65563 conditions per place. [2023-09-01 08:11:00,166 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 99 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-09-01 08:11:00,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 102 transitions, 825 flow [2023-09-01 08:11:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:11:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:11:00,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-09-01 08:11:00,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2023-09-01 08:11:00,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-09-01 08:11:00,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-09-01 08:11:00,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:11:00,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-09-01 08:11:00,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 08:11:00,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:11:00,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:11:00,170 INFO L175 Difference]: Start difference. First operand has 97 places, 64 transitions, 384 flow. Second operand 3 states and 507 transitions. [2023-09-01 08:11:00,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 102 transitions, 825 flow [2023-09-01 08:11:00,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 819 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 08:11:00,519 INFO L231 Difference]: Finished difference. Result has 96 places, 63 transitions, 376 flow [2023-09-01 08:11:00,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=96, PETRI_TRANSITIONS=63} [2023-09-01 08:11:00,520 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2023-09-01 08:11:00,520 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 63 transitions, 376 flow [2023-09-01 08:11:00,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 08:11:00,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:11:00,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:11:00,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:11:00,520 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:11:00,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:11:00,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1134089444, now seen corresponding path program 1 times [2023-09-01 08:11:00,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:11:00,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577655374] [2023-09-01 08:11:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:00,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:11:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:00,574 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 08:11:00,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:11:00,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577655374] [2023-09-01 08:11:00,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577655374] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:11:00,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:11:00,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:11:00,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113570366] [2023-09-01 08:11:00,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:11:00,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:11:00,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:11:00,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:11:00,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:11:00,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 329 [2023-09-01 08:11:00,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 63 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 08:11:00,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:11:00,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 329 [2023-09-01 08:11:00,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:11:06,687 INFO L130 PetriNetUnfolder]: 62024/83948 cut-off events. [2023-09-01 08:11:06,687 INFO L131 PetriNetUnfolder]: For 251719/257051 co-relation queries the response was YES. [2023-09-01 08:11:07,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267124 conditions, 83948 events. 62024/83948 cut-off events. For 251719/257051 co-relation queries the response was YES. Maximal size of possible extension queue 3207. Compared 557500 event pairs, 8326 based on Foata normal form. 5332/82625 useless extension candidates. Maximal degree in co-relation 267093. Up to 77566 conditions per place. [2023-09-01 08:11:07,284 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 97 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-09-01 08:11:07,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 817 flow [2023-09-01 08:11:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:11:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:11:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-09-01 08:11:07,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157041540020263 [2023-09-01 08:11:07,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-09-01 08:11:07,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-09-01 08:11:07,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:11:07,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-09-01 08:11:07,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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 08:11:07,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:11:07,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:11:07,288 INFO L175 Difference]: Start difference. First operand has 96 places, 63 transitions, 376 flow. Second operand 3 states and 509 transitions. [2023-09-01 08:11:07,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 817 flow [2023-09-01 08:11:10,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 816 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:11:10,214 INFO L231 Difference]: Finished difference. Result has 98 places, 63 transitions, 383 flow [2023-09-01 08:11:10,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=98, PETRI_TRANSITIONS=63} [2023-09-01 08:11:10,214 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 48 predicate places. [2023-09-01 08:11:10,215 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 63 transitions, 383 flow [2023-09-01 08:11:10,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 08:11:10,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:11:10,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:11:10,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:11:10,215 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:11:10,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:11:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash -801421526, now seen corresponding path program 1 times [2023-09-01 08:11:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:11:10,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787695517] [2023-09-01 08:11:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:10,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:11:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:10,548 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 08:11:10,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:11:10,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787695517] [2023-09-01 08:11:10,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787695517] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:11:10,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156018556] [2023-09-01 08:11:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:10,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:11:10,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:11:10,549 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 08:11:10,551 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 08:11:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:10,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 30 conjunts are in the unsatisfiable core [2023-09-01 08:11:10,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:11:10,668 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 08:11:10,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:10,702 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 08:11:10,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:10,737 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 08:11:10,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:10,763 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 08:11:10,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:10,807 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 08:11:10,819 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 08:11:10,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:11:10,833 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_561 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_561) c_~A~0.base) (+ c_~A~0.offset (* |c_thread3Thread1of1ForFork1_~i~2#1| 4))) 2147483649)) is different from false [2023-09-01 08:11:10,838 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_561 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_561) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2023-09-01 08:11:10,928 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:11:10,928 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 31 treesize of output 32 [2023-09-01 08:11:10,942 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:11:10,943 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 7745 treesize of output 7617 [2023-09-01 08:11:11,006 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 113 treesize of output 109 [2023-09-01 08:11:11,013 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 109 treesize of output 107 [2023-09-01 08:11:11,020 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 222 treesize of output 206 [2023-09-01 08:11:11,027 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 106 treesize of output 98 [2023-09-01 08:11:11,160 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 08:11:11,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156018556] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:11:11,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:11:11,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-09-01 08:11:11,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166735642] [2023-09-01 08:11:11,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:11:11,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-09-01 08:11:11,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:11:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-09-01 08:11:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=338, Unknown=10, NotChecked=78, Total=506 [2023-09-01 08:11:11,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-09-01 08:11:11,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 63 transitions, 383 flow. Second operand has 23 states, 23 states have (on average 115.56521739130434) internal successors, (2658), 23 states have internal predecessors, (2658), 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 08:11:11,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:11:11,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-09-01 08:11:11,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:11:16,947 INFO L130 PetriNetUnfolder]: 53451/73704 cut-off events. [2023-09-01 08:11:16,947 INFO L131 PetriNetUnfolder]: For 202100/202100 co-relation queries the response was YES. [2023-09-01 08:11:17,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248100 conditions, 73704 events. 53451/73704 cut-off events. For 202100/202100 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 460927 event pairs, 21142 based on Foata normal form. 1948/74568 useless extension candidates. Maximal degree in co-relation 248067. Up to 34948 conditions per place. [2023-09-01 08:11:17,433 INFO L137 encePairwiseOnDemand]: 321/329 looper letters, 119 selfloop transitions, 13 changer transitions 0/132 dead transitions. [2023-09-01 08:11:17,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 132 transitions, 1028 flow [2023-09-01 08:11:17,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:11:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:11:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 877 transitions. [2023-09-01 08:11:17,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3808076422058185 [2023-09-01 08:11:17,435 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 877 transitions. [2023-09-01 08:11:17,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 877 transitions. [2023-09-01 08:11:17,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:11:17,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 877 transitions. [2023-09-01 08:11:17,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.28571428571429) internal successors, (877), 7 states have internal predecessors, (877), 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 08:11:17,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 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 08:11:17,438 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 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 08:11:17,439 INFO L175 Difference]: Start difference. First operand has 98 places, 63 transitions, 383 flow. Second operand 7 states and 877 transitions. [2023-09-01 08:11:17,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 132 transitions, 1028 flow [2023-09-01 08:11:17,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1020 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:11:17,698 INFO L231 Difference]: Finished difference. Result has 103 places, 63 transitions, 411 flow [2023-09-01 08:11:17,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=103, PETRI_TRANSITIONS=63} [2023-09-01 08:11:17,699 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 53 predicate places. [2023-09-01 08:11:17,700 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 63 transitions, 411 flow [2023-09-01 08:11:17,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.56521739130434) internal successors, (2658), 23 states have internal predecessors, (2658), 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 08:11:17,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:11:17,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:11:17,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-01 08:11:17,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:11:17,905 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:11:17,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:11:17,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1134225228, now seen corresponding path program 1 times [2023-09-01 08:11:17,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:11:17,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239711889] [2023-09-01 08:11:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:17,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:11:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:11:17,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:11:17,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239711889] [2023-09-01 08:11:17,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239711889] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:11:17,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196923565] [2023-09-01 08:11:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:17,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:11:17,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:11:17,946 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 08:11:17,948 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 08:11:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:18,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:11:18,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:11:18,082 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 08:11:18,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:11:18,135 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 08:11:18,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196923565] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:11:18,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:11:18,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-09-01 08:11:18,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949433706] [2023-09-01 08:11:18,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:11:18,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:11:18,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:11:18,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:11:18,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:11:18,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-09-01 08:11:18,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 63 transitions, 411 flow. Second operand has 13 states, 13 states have (on average 143.15384615384616) internal successors, (1861), 13 states have internal predecessors, (1861), 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 08:11:18,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:11:18,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-09-01 08:11:18,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:11:23,091 INFO L130 PetriNetUnfolder]: 42013/57792 cut-off events. [2023-09-01 08:11:23,091 INFO L131 PetriNetUnfolder]: For 169711/169711 co-relation queries the response was YES. [2023-09-01 08:11:23,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201638 conditions, 57792 events. 42013/57792 cut-off events. For 169711/169711 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 353095 event pairs, 4998 based on Foata normal form. 3018/60036 useless extension candidates. Maximal degree in co-relation 201604. Up to 23608 conditions per place. [2023-09-01 08:11:23,429 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 249 selfloop transitions, 15 changer transitions 4/268 dead transitions. [2023-09-01 08:11:23,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 268 transitions, 1890 flow [2023-09-01 08:11:23,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:11:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:11:23,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1894 transitions. [2023-09-01 08:11:23,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797365754812563 [2023-09-01 08:11:23,433 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1894 transitions. [2023-09-01 08:11:23,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1894 transitions. [2023-09-01 08:11:23,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:11:23,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1894 transitions. [2023-09-01 08:11:23,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 157.83333333333334) internal successors, (1894), 12 states have internal predecessors, (1894), 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 08:11:23,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 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 08:11:23,439 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 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 08:11:23,439 INFO L175 Difference]: Start difference. First operand has 103 places, 63 transitions, 411 flow. Second operand 12 states and 1894 transitions. [2023-09-01 08:11:23,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 268 transitions, 1890 flow [2023-09-01 08:11:23,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 268 transitions, 1873 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-09-01 08:11:23,648 INFO L231 Difference]: Finished difference. Result has 111 places, 68 transitions, 466 flow [2023-09-01 08:11:23,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=111, PETRI_TRANSITIONS=68} [2023-09-01 08:11:23,648 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 61 predicate places. [2023-09-01 08:11:23,649 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 68 transitions, 466 flow [2023-09-01 08:11:23,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 143.15384615384616) internal successors, (1861), 13 states have internal predecessors, (1861), 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 08:11:23,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:11:23,649 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 08:11:23,657 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 08:11:23,849 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,SelfDestructingSolverStorable14 [2023-09-01 08:11:23,850 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:11:23,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:11:23,850 INFO L85 PathProgramCache]: Analyzing trace with hash 751289635, now seen corresponding path program 2 times [2023-09-01 08:11:23,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:11:23,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964116765] [2023-09-01 08:11:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:23,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:11:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:11:23,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:11:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964116765] [2023-09-01 08:11:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964116765] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:11:23,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453765365] [2023-09-01 08:11:23,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:11:23,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:11:23,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:11:23,911 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 08:11:23,946 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 08:11:24,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:11:24,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:11:24,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:11:24,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:11:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-09-01 08:11:24,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:11:24,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453765365] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:11:24,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:11:24,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-09-01 08:11:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854393254] [2023-09-01 08:11:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:11:24,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:11:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:11:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:11:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:11:24,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-09-01 08:11:24,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 68 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 08:11:24,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:11:24,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-09-01 08:11:24,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:11:27,215 INFO L130 PetriNetUnfolder]: 30954/42113 cut-off events. [2023-09-01 08:11:27,216 INFO L131 PetriNetUnfolder]: For 213802/217151 co-relation queries the response was YES. [2023-09-01 08:11:27,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139744 conditions, 42113 events. 30954/42113 cut-off events. For 213802/217151 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 245332 event pairs, 23168 based on Foata normal form. 5021/46847 useless extension candidates. Maximal degree in co-relation 139708. Up to 42010 conditions per place. [2023-09-01 08:11:27,480 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 58 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-09-01 08:11:27,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 63 transitions, 485 flow [2023-09-01 08:11:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:11:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:11:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-09-01 08:11:27,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2023-09-01 08:11:27,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-09-01 08:11:27,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-09-01 08:11:27,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:11:27,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-09-01 08:11:27,483 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 08:11:27,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:11:27,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:11:27,485 INFO L175 Difference]: Start difference. First operand has 111 places, 68 transitions, 466 flow. Second operand 3 states and 486 transitions. [2023-09-01 08:11:27,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 63 transitions, 485 flow [2023-09-01 08:11:27,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 63 transitions, 431 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-09-01 08:11:27,600 INFO L231 Difference]: Finished difference. Result has 93 places, 63 transitions, 315 flow [2023-09-01 08:11:27,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=93, PETRI_TRANSITIONS=63} [2023-09-01 08:11:27,600 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-09-01 08:11:27,600 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 63 transitions, 315 flow [2023-09-01 08:11:27,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 08:11:27,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:11:27,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:11:27,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:11:27,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 08:11:27,801 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:11:27,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:11:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1342970954, now seen corresponding path program 1 times [2023-09-01 08:11:27,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:11:27,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460155164] [2023-09-01 08:11:27,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:27,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:11:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:28,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:11:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460155164] [2023-09-01 08:11:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460155164] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:11:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133630141] [2023-09-01 08:11:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:28,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:11:28,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:11:28,145 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:11:28,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 08:11:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:28,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 08:11:28,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:11:28,288 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 13 treesize of output 9 [2023-09-01 08:11:28,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:28,322 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 08:11:28,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:28,352 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 08:11:28,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:28,377 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 08:11:28,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2023-09-01 08:11:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:28,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:11:28,537 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_749 (Array Int Int)) (v_ArrVal_750 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_749) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_750) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2023-09-01 08:11:28,584 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:11:28,585 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 30 treesize of output 31 [2023-09-01 08:11:28,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:11:28,592 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 553 treesize of output 529 [2023-09-01 08:11:28,606 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 59 treesize of output 55 [2023-09-01 08:11:28,610 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 118 treesize of output 102 [2023-09-01 08:11:28,614 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 54 treesize of output 46 [2023-09-01 08:11:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:28,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133630141] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:11:28,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:11:28,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-09-01 08:11:28,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935816589] [2023-09-01 08:11:28,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:11:28,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-09-01 08:11:28,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:11:28,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-09-01 08:11:28,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=509, Unknown=9, NotChecked=46, Total=650 [2023-09-01 08:11:28,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-09-01 08:11:28,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 63 transitions, 315 flow. Second operand has 26 states, 26 states have (on average 118.38461538461539) internal successors, (3078), 26 states have internal predecessors, (3078), 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 08:11:28,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:11:28,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-09-01 08:11:28,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:11:32,406 INFO L130 PetriNetUnfolder]: 32833/44762 cut-off events. [2023-09-01 08:11:32,406 INFO L131 PetriNetUnfolder]: For 60437/60437 co-relation queries the response was YES. [2023-09-01 08:11:32,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139144 conditions, 44762 events. 32833/44762 cut-off events. For 60437/60437 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 248140 event pairs, 12406 based on Foata normal form. 144/44906 useless extension candidates. Maximal degree in co-relation 139117. Up to 33457 conditions per place. [2023-09-01 08:11:32,642 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 138 selfloop transitions, 11 changer transitions 1/150 dead transitions. [2023-09-01 08:11:32,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 150 transitions, 1002 flow [2023-09-01 08:11:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:11:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:11:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-09-01 08:11:32,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39209726443769 [2023-09-01 08:11:32,645 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-09-01 08:11:32,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-09-01 08:11:32,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:11:32,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-09-01 08:11:32,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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 08:11:32,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 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 08:11:32,649 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 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 08:11:32,649 INFO L175 Difference]: Start difference. First operand has 93 places, 63 transitions, 315 flow. Second operand 8 states and 1032 transitions. [2023-09-01 08:11:32,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 150 transitions, 1002 flow [2023-09-01 08:11:32,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 150 transitions, 1001 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:11:32,728 INFO L231 Difference]: Finished difference. Result has 101 places, 67 transitions, 368 flow [2023-09-01 08:11:32,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=368, PETRI_PLACES=101, PETRI_TRANSITIONS=67} [2023-09-01 08:11:32,729 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 51 predicate places. [2023-09-01 08:11:32,729 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 67 transitions, 368 flow [2023-09-01 08:11:32,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 118.38461538461539) internal successors, (3078), 26 states have internal predecessors, (3078), 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 08:11:32,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:11:32,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:11:32,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 08:11:32,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 08:11:32,938 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:11:32,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:11:32,939 INFO L85 PathProgramCache]: Analyzing trace with hash -837495404, now seen corresponding path program 1 times [2023-09-01 08:11:32,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:11:32,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448317591] [2023-09-01 08:11:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:32,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:11:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:32,986 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 08:11:32,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:11:32,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448317591] [2023-09-01 08:11:32,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448317591] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:11:32,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:11:32,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:11:32,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852635410] [2023-09-01 08:11:32,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:11:32,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:11:32,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:11:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:11:32,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:11:32,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-09-01 08:11:32,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 67 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 08:11:32,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:11:32,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-09-01 08:11:32,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:11:35,990 INFO L130 PetriNetUnfolder]: 31183/42344 cut-off events. [2023-09-01 08:11:35,991 INFO L131 PetriNetUnfolder]: For 63779/66791 co-relation queries the response was YES. [2023-09-01 08:11:36,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137938 conditions, 42344 events. 31183/42344 cut-off events. For 63779/66791 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 250938 event pairs, 5854 based on Foata normal form. 3412/45660 useless extension candidates. Maximal degree in co-relation 137908. Up to 36843 conditions per place. [2023-09-01 08:11:36,216 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 87 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-09-01 08:11:36,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 693 flow [2023-09-01 08:11:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:11:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:11:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-09-01 08:11:36,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055724417426545 [2023-09-01 08:11:36,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-09-01 08:11:36,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-09-01 08:11:36,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:11:36,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-09-01 08:11:36,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 08:11:36,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:11:36,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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 08:11:36,219 INFO L175 Difference]: Start difference. First operand has 101 places, 67 transitions, 368 flow. Second operand 3 states and 499 transitions. [2023-09-01 08:11:36,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 693 flow [2023-09-01 08:11:36,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 667 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-09-01 08:11:36,471 INFO L231 Difference]: Finished difference. Result has 100 places, 67 transitions, 363 flow [2023-09-01 08:11:36,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=100, PETRI_TRANSITIONS=67} [2023-09-01 08:11:36,471 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 50 predicate places. [2023-09-01 08:11:36,472 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 67 transitions, 363 flow [2023-09-01 08:11:36,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 08:11:36,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:11:36,472 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:11:36,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 08:11:36,472 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:11:36,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:11:36,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1313383312, now seen corresponding path program 1 times [2023-09-01 08:11:36,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:11:36,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406427536] [2023-09-01 08:11:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:36,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:11:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:36,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:11:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406427536] [2023-09-01 08:11:36,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406427536] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:11:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965053571] [2023-09-01 08:11:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:36,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:11:36,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:11:36,814 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:11:36,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 08:11:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:36,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 34 conjunts are in the unsatisfiable core [2023-09-01 08:11:36,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:11:36,963 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 13 treesize of output 9 [2023-09-01 08:11:36,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:36,999 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 08:11:37,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:37,034 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 08:11:37,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:37,063 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 08:11:37,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:37,090 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 08:11:37,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2023-09-01 08:11:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:37,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:11:37,260 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_856 (Array Int Int)) (v_ArrVal_855 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_855) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_856) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2023-09-01 08:11:37,268 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_853 (Array Int Int)) (v_ArrVal_856 (Array Int Int)) (v_ArrVal_855 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_853) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_855) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_856) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649)) is different from false [2023-09-01 08:11:37,276 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:11:37,276 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 33 treesize of output 34 [2023-09-01 08:11:37,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:11:37,283 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 1097 treesize of output 1073 [2023-09-01 08:11:37,310 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 258 treesize of output 242 [2023-09-01 08:11:37,317 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 242 treesize of output 210 [2023-09-01 08:11:37,327 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 103 treesize of output 99 [2023-09-01 08:11:37,333 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 106 treesize of output 98 [2023-09-01 08:11:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-09-01 08:11:37,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965053571] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:11:37,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:11:37,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-09-01 08:11:37,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700888300] [2023-09-01 08:11:37,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:11:37,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-09-01 08:11:37,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:11:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-09-01 08:11:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=590, Unknown=15, NotChecked=102, Total=812 [2023-09-01 08:11:37,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-09-01 08:11:37,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 67 transitions, 363 flow. Second operand has 29 states, 29 states have (on average 115.34482758620689) internal successors, (3345), 29 states have internal predecessors, (3345), 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 08:11:37,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:11:37,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-09-01 08:11:37,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:11:41,859 INFO L130 PetriNetUnfolder]: 38795/53000 cut-off events. [2023-09-01 08:11:41,860 INFO L131 PetriNetUnfolder]: For 92979/92979 co-relation queries the response was YES. [2023-09-01 08:11:42,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174833 conditions, 53000 events. 38795/53000 cut-off events. For 92979/92979 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 309926 event pairs, 16918 based on Foata normal form. 1314/54314 useless extension candidates. Maximal degree in co-relation 174803. Up to 23628 conditions per place. [2023-09-01 08:11:42,174 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 136 selfloop transitions, 11 changer transitions 1/148 dead transitions. [2023-09-01 08:11:42,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 148 transitions, 993 flow [2023-09-01 08:11:42,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:11:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:11:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1016 transitions. [2023-09-01 08:11:42,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860182370820669 [2023-09-01 08:11:42,176 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1016 transitions. [2023-09-01 08:11:42,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1016 transitions. [2023-09-01 08:11:42,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:11:42,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1016 transitions. [2023-09-01 08:11:42,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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 08:11:42,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 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 08:11:42,180 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 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 08:11:42,180 INFO L175 Difference]: Start difference. First operand has 100 places, 67 transitions, 363 flow. Second operand 8 states and 1016 transitions. [2023-09-01 08:11:42,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 148 transitions, 993 flow [2023-09-01 08:11:42,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 148 transitions, 977 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:11:42,403 INFO L231 Difference]: Finished difference. Result has 106 places, 68 transitions, 393 flow [2023-09-01 08:11:42,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=393, PETRI_PLACES=106, PETRI_TRANSITIONS=68} [2023-09-01 08:11:42,403 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 56 predicate places. [2023-09-01 08:11:42,404 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 68 transitions, 393 flow [2023-09-01 08:11:42,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 115.34482758620689) internal successors, (3345), 29 states have internal predecessors, (3345), 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 08:11:42,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:11:42,404 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:11:42,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 08:11:42,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:11:42,609 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:11:42,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:11:42,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1317569428, now seen corresponding path program 2 times [2023-09-01 08:11:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:11:42,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830507343] [2023-09-01 08:11:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:11:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:42,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:11:42,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830507343] [2023-09-01 08:11:42,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830507343] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:11:42,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669029077] [2023-09-01 08:11:42,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:11:42,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:11:42,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:11:42,697 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:11:42,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 08:11:42,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:11:42,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:11:42,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 08:11:42,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:11:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:42,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:11:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:42,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669029077] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:11:42,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:11:42,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-09-01 08:11:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312852911] [2023-09-01 08:11:42,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:11:42,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 08:11:42,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:11:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 08:11:42,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-09-01 08:11:43,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-09-01 08:11:43,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 68 transitions, 393 flow. Second operand has 19 states, 19 states have (on average 142.42105263157896) internal successors, (2706), 19 states have internal predecessors, (2706), 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 08:11:43,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:11:43,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-09-01 08:11:43,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:11:47,239 INFO L130 PetriNetUnfolder]: 36951/50670 cut-off events. [2023-09-01 08:11:47,239 INFO L131 PetriNetUnfolder]: For 101092/101092 co-relation queries the response was YES. [2023-09-01 08:11:47,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172687 conditions, 50670 events. 36951/50670 cut-off events. For 101092/101092 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 296843 event pairs, 12896 based on Foata normal form. 972/51642 useless extension candidates. Maximal degree in co-relation 172656. Up to 19548 conditions per place. [2023-09-01 08:11:47,562 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 296 selfloop transitions, 22 changer transitions 12/330 dead transitions. [2023-09-01 08:11:47,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 330 transitions, 2066 flow [2023-09-01 08:11:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 08:11:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 08:11:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2669 transitions. [2023-09-01 08:11:47,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2023-09-01 08:11:47,566 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2669 transitions. [2023-09-01 08:11:47,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2669 transitions. [2023-09-01 08:11:47,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:11:47,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2669 transitions. [2023-09-01 08:11:47,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 157.0) internal successors, (2669), 17 states have internal predecessors, (2669), 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 08:11:47,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 329.0) internal successors, (5922), 18 states have internal predecessors, (5922), 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 08:11:47,576 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 329.0) internal successors, (5922), 18 states have internal predecessors, (5922), 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 08:11:47,576 INFO L175 Difference]: Start difference. First operand has 106 places, 68 transitions, 393 flow. Second operand 17 states and 2669 transitions. [2023-09-01 08:11:47,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 330 transitions, 2066 flow [2023-09-01 08:11:48,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 330 transitions, 2038 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-09-01 08:11:48,732 INFO L231 Difference]: Finished difference. Result has 121 places, 77 transitions, 522 flow [2023-09-01 08:11:48,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=522, PETRI_PLACES=121, PETRI_TRANSITIONS=77} [2023-09-01 08:11:48,732 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 71 predicate places. [2023-09-01 08:11:48,732 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 77 transitions, 522 flow [2023-09-01 08:11:48,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 142.42105263157896) internal successors, (2706), 19 states have internal predecessors, (2706), 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 08:11:48,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:11:48,733 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:11:48,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 08:11:48,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:11:48,934 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:11:48,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:11:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash -143849396, now seen corresponding path program 3 times [2023-09-01 08:11:48,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:11:48,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399891443] [2023-09-01 08:11:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:48,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:11:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:49,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:11:49,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399891443] [2023-09-01 08:11:49,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399891443] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:11:49,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466317935] [2023-09-01 08:11:49,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 08:11:49,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:11:49,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:11:49,556 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:11:49,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 08:11:49,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 08:11:49,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:11:49,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 40 conjunts are in the unsatisfiable core [2023-09-01 08:11:49,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:11:49,776 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 08:11:49,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:49,813 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 08:11:49,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:49,842 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 08:11:49,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:11:49,866 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 08:11:49,879 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 19 treesize of output 18 [2023-09-01 08:11:49,900 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 19 treesize of output 18 [2023-09-01 08:11:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:49,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:11:50,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:11:50,063 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 30 treesize of output 31 [2023-09-01 08:11:50,069 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:11:50,070 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 139 treesize of output 133 [2023-09-01 08:11:50,073 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 122 treesize of output 114 [2023-09-01 08:11:50,076 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 114 treesize of output 98 [2023-09-01 08:11:50,080 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 50 treesize of output 46 [2023-09-01 08:11:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:11:50,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466317935] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:11:50,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:11:50,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-09-01 08:11:50,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390322039] [2023-09-01 08:11:50,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:11:50,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 08:11:50,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:11:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 08:11:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=754, Unknown=14, NotChecked=0, Total=870 [2023-09-01 08:11:50,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-09-01 08:11:50,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 77 transitions, 522 flow. Second operand has 30 states, 30 states have (on average 118.33333333333333) internal successors, (3550), 30 states have internal predecessors, (3550), 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 08:11:50,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:11:50,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-09-01 08:11:50,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:11:55,312 INFO L130 PetriNetUnfolder]: 37527/51438 cut-off events. [2023-09-01 08:11:55,313 INFO L131 PetriNetUnfolder]: For 125206/125206 co-relation queries the response was YES. [2023-09-01 08:11:55,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184050 conditions, 51438 events. 37527/51438 cut-off events. For 125206/125206 co-relation queries the response was YES. Maximal size of possible extension queue 1414. Compared 292814 event pairs, 21026 based on Foata normal form. 96/51534 useless extension candidates. Maximal degree in co-relation 184015. Up to 28489 conditions per place. [2023-09-01 08:11:55,648 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 167 selfloop transitions, 13 changer transitions 2/182 dead transitions. [2023-09-01 08:11:55,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 1342 flow [2023-09-01 08:11:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:11:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:11:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1306 transitions. [2023-09-01 08:11:55,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39696048632218844 [2023-09-01 08:11:55,650 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1306 transitions. [2023-09-01 08:11:55,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1306 transitions. [2023-09-01 08:11:55,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:11:55,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1306 transitions. [2023-09-01 08:11:55,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 130.6) internal successors, (1306), 10 states have internal predecessors, (1306), 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 08:11:55,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 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 08:11:55,656 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 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 08:11:55,656 INFO L175 Difference]: Start difference. First operand has 121 places, 77 transitions, 522 flow. Second operand 10 states and 1306 transitions. [2023-09-01 08:11:55,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 1342 flow [2023-09-01 08:11:56,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 182 transitions, 1318 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-09-01 08:11:56,205 INFO L231 Difference]: Finished difference. Result has 127 places, 82 transitions, 575 flow [2023-09-01 08:11:56,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=575, PETRI_PLACES=127, PETRI_TRANSITIONS=82} [2023-09-01 08:11:56,206 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2023-09-01 08:11:56,206 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 82 transitions, 575 flow [2023-09-01 08:11:56,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 118.33333333333333) internal successors, (3550), 30 states have internal predecessors, (3550), 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 08:11:56,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:11:56,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:11:56,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 08:11:56,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-09-01 08:11:56,407 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-09-01 08:11:56,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:11:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1381261288, now seen corresponding path program 1 times [2023-09-01 08:11:56,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:11:56,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635987050] [2023-09-01 08:11:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:11:56,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:11:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:11:56,445 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 08:11:56,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:11:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635987050] [2023-09-01 08:11:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635987050] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:11:56,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:11:56,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:11:56,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165754797] [2023-09-01 08:11:56,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:11:56,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:11:56,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:11:56,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:11:56,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:11:56,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-09-01 08:11:56,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 82 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 08:11:56,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:11:56,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-09-01 08:11:56,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand